Spreadsheet: 116bafed-abe2-42da-9b31-a4d103559b9b
Sheet: Stones

BUILDING_STONE_ID | STONE_NAME | PARENT BUILDING STONE  ID | ALTERNATIVE_NAMES | [NAME] | COLOUR | COLOUR_VARIATION | WEATHERED COLOUR | LITHOSTRATIGRAPHY | CHRONOSTRAT | STONE_LITHOLOGY | GRAIN_SIZE | [NAME] | KEY_IDENTIFICATION_FEATURES | FAILURE_WEATHERING | CONTEXT_OF_USE | LOCALITY_OF_USE | DATE_COMPILED | COMPILED_BY | MINERAL PLANNING AREA | English Heritage Atlas Area | SOURCE_OF_INFO | retrieval_date
1103 | Cornbrash | 233 |  | Typically occurs as shelly, rough, rubbly beds. Some weathered beds have a pitted appearance. | PALE-YELLOW | Uniform | Pale pinkish to pale grey, [NAME] to brownish ochre. | CORNBRASH FORMATION | JURASSIC | LIMESTONE | FINE GRAINED | Usually weakly and irregularly bedded. Locally, the thicker limestone units exhibit cross-bedding, the sandy units sometimes wavy-bedded. | Lower Cornbrash pale cream, sparsely ooidal and peliodal biomicrites, locally shelly, flaggy or nodular in appearance with irregular and wispy seams of clacareous marl. Upper Cornbrash pale brownish-greys, sparsely sandy, peliodal biomicrites overlying sandy biosparite and fine-grained, calcareous sandstone (with angular quartz grains). Fossils, especially bivalves and brachiopods (rhynchonellids and terebratulids) common. |  | Local rough work along the outcrop, but usually incapable of being dressed. Lower Cornbrash used mainly for lime burning. | Outcrop is a narrow, discontinuous, approximate north-south trending zone in south east Somerset stretching from east of Frome, through Weston Town to near Wanstrow, [NAME], then south to Wincanton via Upton Noble, South Brewham, and [NAME]. South of Wincanton, the outcrop extends from North and South Cheriton, via [NAME] and [NAME] to Henstridge. Also along Somerset - Dorset border between East Coker and Ryme Intrinseca. |  | ? | Somerset County Council | Somerset English Heritage Atlas Area |  | 2012-05-16 10:21:07
1113 | Chert & Flint | 81 |  | Occurs as irregular equidimensional blocks seldom larger than large cobbles, mainly laid as random rubble. | PALE-GREY | Uniform | Grey, brown, orange, black, in many cases with white 'outer skin'. | UPPER GREENSAND FORMATION | [NAME] | CHERT | VERY FINE GRAINED | Nodular outlines with many re-entrant angles in some blocks; bedding inherited from the parent sandstone. | Composed of cryptocrystalline silica (chalcedony) so very fine grained with irregular, or blocky to conchoidal fracture; many blocks have layers of quartz or glaconite grains enclosed by the chacedony cement defining the original bedding. | Very hard and resistant. | [NAME] is the predominant stone for all kinds of buildings in the central Blackdown Hills. May be roughly squared and  laid in courses in Victorian and younger buildings but otherwise used without shaping (eg. rubblestone for walling). Towards the edges of the Blackdown Hills, quoins and dressing of buildings tend to be made of  more easily worked stone. For building purposes, was formerly collected as surface brash from fields over the outcrop area. | [NAME] and the surrounding villages. |  | ? | Somerset County Council | Somerset English Heritage Atlas Area |  | 2012-05-16 10:21:07
1114 | Calcareous Grit | 232 |  |  | PALE-GREY | Uniform | Grey, pale grey. | UPPER GREENSAND FORMATION | [NAME] | SANDSTONE | MEDIUM GRAINED | Bedding usually present. Cross-bedding observed in some blocks. | Hard, nodular, calcareous sandstone with poorly-sorted grains of translucent quartz and chalky calcite set in sparse, powdery calcite cement. The proportions of quartz and calcite grains vary and varieties where one greatly preponderates over the other are common. Green glauconite, and black iron oxides derived from it, are widespread.  The presence of fine-grained carbonate cement encourages the growth of a characteristic crimson alga, which helps to distinguish this sandstone from those of Permian or Triassic age, especially on north-facing walls. May contain sponge spicules and the serpulid worm Rotularia concava. In east may contain scattered, coarse, very well-rounded quartz grains. |  | In addition to its use as the main building stone (ashlar, dressings and rubblestone) close to the source quarries, the Upper Greensand is also widely used for the quoins and dressings of medieval churches and other high status buildings throughout the Blackdown Hills extending north into the Vale of Taunton Deane. | In a zone extending from Whitestaunton in the west to Chaffcombe and Winsham in the east. |  | ? | Somerset County Council | Somerset English Heritage Atlas Area |  | 2012-05-16 10:21:07
1115 | Foxmould | 1114 | Calcareous Grit |  | PALE-BROWN | Uniform | Grey, pale grey. | [NAME] MEMBER | [NAME] | SANDSTONE | MEDIUM GRAINED | Bedding usually present. Cross-bedding observed in some blocks. With concretionary 'doggers' and tabular sandy limestones in parts | Glauconitic sandstone, calcareous in part, greyish-green when fresh, but becoming characteristic orange-brown ('foxy-brown') colour on weathering. | Rapidly weathers to a characteristic 'foxy-brown' colour | In addition to its use as the main building stone (ashlar, dressings and rubblestone) close to the source quarries, the Upper Greensand is also widely used for the quoins and dressings of medieval churches and other high status buildings throughout the Blackdown Hills extending north into the Vale of Taunton Deane. | A local rock name name applied to part of the Calcareous Grit, the latter extending in a zone from Whitestaunton in the west to Chaffcombe and Winsham in the east. The [NAME] Member is particularly well developed within the western Blackdowns Hills area above Wellington, but extends eastwards towards Chard. |  | ? | Somerset County Council | Somerset English Heritage Atlas Area |  | 2012-05-16 10:21:07
1116 | [NAME] | 1114 | Calcareous Grit |  | PALE-GREY | Uniform | Grey, pale grey. | UPPER GREENSAND FORMATION | [NAME] | SANDSTONE | MEDIUM GRAINED | Bedding usually present. Cross-bedding observed in some blocks. | Hard, nodular, calcareous sandstone with poorly-sorted grains of translucent quartz and chalky calcite set in sparse, powdery calcite cement. The proportions of quartz and calcite grains vary and varieties where one greatly preponderates over the other are common. Green glauconite, and black iron oxides derived from it, are widespread.  The presence of fine-grained carbonate cement encourages the growth of a characteristic crimson alga, which helps to distinguish this sandstone from those of Permian or Triassic age, especially on north-facing walls. May contain sponge spicules and the serpulid worm Rotularia concava. In east may contain scattered, coarse, very well-rounded quartz grains. |  | In addition to its use as the main building stone (ashlar, dressings and rubblestone) close to the source quarries, the Upper Greensand is also widely used for the quoins and dressings of medieval churches and other high status buildings throughout the Blackdown Hills extending north into the Vale of Taunton Deane. | A local rock name applied to the Calcareous Grit, the latter extending In a zone from Whitestaunton in the west to Chaffcombe and Winsham in the east. |  | ? | Somerset County Council | Somerset English Heritage Atlas Area |  | 2012-05-16 10:21:07
1117 | [NAME] | 1114 | Calcareous Grit |  | PALE-GREY | Uniform | Grey, pale grey. | UPPER GREENSAND FORMATION | [NAME] | SANDSTONE | MEDIUM GRAINED | Bedding usually present. Cross-bedding observed in some blocks. | Hard, nodular, calcareous sandstone with poorly-sorted grains of translucent quartz and chalky calcite set in sparse, powdery calcite cement. The proportions of quartz and calcite grains vary and varieties where one greatly preponderates over the other are common. Green glauconite, and black iron oxides derived from it, are widespread.  The presence of fine-grained carbonate cement encourages the growth of a characteristic crimson alga, which helps to distinguish this sandstone from those of Permian or Triassic age, especially on north-facing walls. May contain sponge spicules and the serpulid worm Rotularia concava. In east may contain scattered, coarse, very well-rounded quartz grains. |  | In addition to its use as the main building stone (ashlar, dressings and rubblestone) close to the source quarries, the Upper Greensand is also widely used for the quoins and dressings of medieval churches and other high status buildings throughout the Blackdown Hills extending north into the Vale of Taunton Deane. | A local rock name applied to the Calcareous Grit, the latter extending In a zone from Whitestaunton in the west to Chaffcombe and Winsham in the east. |  | ? | Somerset County Council | Somerset English Heritage Atlas Area |  | 2012-05-16 10:21:07
1118 | [NAME] | 1114 | Calcareous Grit |  | PALE-GREY | Uniform | Grey, pale grey. | UPPER GREENSAND FORMATION | [NAME] | SANDSTONE | MEDIUM GRAINED | Bedding usually present. Cross-bedding observed in some blocks. | Hard, nodular, calcareous sandstone with poorly-sorted grains of translucent quartz and chalky calcite set in sparse, powdery calcite cement. The proportions of quartz and calcite grains vary and varieties where one greatly preponderates over the other are common. Green glauconite, and black iron oxides derived from it, are widespread.  The presence of fine-grained carbonate cement encourages the growth of a characteristic crimson alga, which helps to distinguish this sandstone from those of Permian or Triassic age, especially on north-facing walls. May contain sponge spicules and the serpulid worm Rotularia concava. In east may contain scattered, coarse, very well-rounded quartz grains. |  | In addition to its use as the main building stone (ashlar, dressings and rubblestone) close to the source quarries, the Upper Greensand is also widely used for the quoins and dressings of medieval churches and other high status buildings throughout the Blackdown Hills extending north into the Vale of Taunton Deane.As its name implies, [NAME] is used in buildings in and around Whitestaunton area. | A local rock name applied to the Calcareous Grit in the area around Whitestaunton in the Blackdown Hills. |  | ? | Somerset County Council | Somerset English Heritage Atlas Area |  | 2012-05-16 10:21:07
1119 | [NAME] | 1114 | Calcareous Grit |  | PALE-GREY | Uniform | Grey, pale grey. | UPPER GREENSAND FORMATION | [NAME] | SANDSTONE | MEDIUM GRAINED | Bedding usually present. Cross-bedding observed in some blocks. | Hard, nodular, calcareous sandstone with poorly-sorted grains of translucent quartz and chalky calcite set in sparse, powdery calcite cement. The proportions of quartz and calcite grains vary and varieties where one greatly preponderates over the other are common. Green glauconite, and black iron oxides derived from it, are widespread.  The presence of fine-grained carbonate cement encourages the growth of a characteristic crimson alga, which helps to distinguish this sandstone from those of Permian or Triassic age, especially on north-facing walls. May contain sponge spicules and the serpulid worm Rotularia concava. In east may contain scattered, coarse, very well-rounded quartz grains. |  | In addition to its use as the main building stone (ashlar, dressings and rubblestone) close to the source quarries, the Upper Greensand is also widely used for the quoins and dressings of medieval churches and other high status buildings throughout the Blackdown Hills extending north into the Vale of Taunton Deane.As its name implies, [NAME] is used in buildings in and around Whitestaunton area. | A local rock name applied to the Calcareous Grit in the area around Whitestaunton in the Blackdown Hills. |  | ? | Somerset County Council | Somerset English Heritage Atlas Area |  | 2012-05-16 10:21:07
1120 | Shaftesbury Sandstone | 232 |  |  | GREEN | Uniform | Pale to dark grey, greyish green, olive green. | SHAFTESBURY SANDSTONE MEMBER | [NAME] | SANDSTONE, GLAUCONITIC | FINE GRAINED | Sandstones vary from poorly to  moderately sorted, some beds are well sorted. Lamination and soft sediment deformation structures sometimes present, but usually indistinctly bedded. | Alternating beds of grey and green, glauconitic coarse siltstones and fine-grained sandstones, calcite-cemented in places. The member is capped by a hard, shelly, calcite-cemented glauconitic sandstone (termed Ragstone). Some upper beds contain layers of calcareous concretions and coarse sands, fossils uncommon and usually confined to shelly, calcareous masses. | Hard and resistant. | Upper calcite-cemented sandstones assigned to  the Shaftesbury Sandstone are used as local building stone, mainly ashlar and rubblestone. Formerly also dug at Pen Pits for millstones and quernstones. | Mainly confined to far southeast corner of County, in Penselwood and White Cross area, east of Wincanton. |  | ? | Somerset County Council | Somerset English Heritage Atlas Area |  | 2012-05-16 10:21:07
1121 | Ragstone | 1120 | Ragstone Beds |  | GREEN | Uniform | Pale to dark grey, greyish green, olive green. | SHAFTESBURY SANDSTONE MEMBER | [NAME] | SANDSTONE, GLAUCONITIC | FINE GRAINED | Sandstones vary from poorly to  moderately sorted, some beds are well sorted. Lamination and soft sediment deformation structures sometimes present, but usually indistinctly bedded. | Alternating beds of grey and green, glauconitic coarse siltstones and fine-grained sandstones, calcite-cemented in places. The member is capped by a hard, shelly, calcite-cemented glauconitic sandstone (termed Ragstone). Some upper beds contain layers of calcareous concretions and coarse sands, fossils uncommon and usually confined to shelly, calcareous masses. | Hard and resistant. | Upper calcite-cemented Ragstone used as local building stone, mainly ashlar and rubblestone. Formerly also dug at Pen Pits for millstones and quernstones. | A local rock name applied to part of the Shaftesbury Sandstone Member, which is mainly confined to far southeast corner of County, in Penselwood and White Cross area, east of Wincanton. |  | ? | Somerset County Council | Somerset English Heritage Atlas Area |  | 2012-05-16 10:21:07
1122 | [NAME] | 1 |  | Typically occurs as shelly, flaggy, rubbly beds. | PALE-YELLOW | Uniform | Pale to dark grey, dark yellow. | CUCKLINGTON OOLITE MEMBER | JURASSIC | LIMESTONE, OOIDAL | FINE GRAINED | Bioclastic, oolitic limestones, some interslab cavities near the top of the formation contain pisoliths. | Pale grey to creamy yellow, very rubbly to flaggy, shelly oolitic limestones, with micritic clay interbeds. Oolitic beds and marls sometimes with scattered pisoloths and sandy layers. Fossils, especially bivalves and echinoids common, usually fragmentary. |  | Used mainly for local rubblestone walling in Cucklington and [NAME] areas. Flaggy nature is particularly suited to walling. | Confined to far southeast corner of County, in Cucklington and Stoke Trister area, east of Wincanton. |  | ? | Somerset County Council | Somerset English Heritage Atlas Area |  | 2012-05-16 10:21:07
1123 | Forest Marble | 424 |  | Has the most uniform thickness of all Jurassic formations in south east Somerset (35-40m). The western edge of the outcrop is commonly a prominent scarp. | GREY | Uniform | [NAME], greenish grey, orange | FOREST MARBLE FORMATION | JURASSIC | LIMESTONE | FINE GRAINED | Tabular or trough-cross stratification common in thick units, sometimes with elongate erosional scours; ripple-cross lamination and trace fossil trails occur in calcareous sandstones. Limestones are packed with fossil bivalves which lie parallel with the bedding, and are clearly winnowed. | Variable lithology with predominance of limestone, main lithology is a greenish-grey sandy, locally calcareous, mudstone. Sandy mudstone is characteristic of the lower part of the Formation; orange, calcareous sandstone is common throughout the sequence as thin wisps, lenses, laminae and beds. Laterally impersistent limestones also occur throughout the sequence, but especially in the upper part, and vary from cross-bedded, sparsely oolitic and oyster-rich to massively-bedded, very shelly, blue-hearted sparites. A distinctive yellowish-grey shelly micrite (the 'Boueti Bed') lies at the base of the Formation. |  | Used locally for houses and walls along the outcrop (eg. especially at Upton Noble). Extensive use for rubble walling, some ashlar, stone tiles for roofing; larger flagstones utilised for bridging ditches. | Outcrop stretches from near Frome south-westwards through Upton Noble to [NAME], then southwards through North Brewham, Redlynch and west of Wincanton to Dorset border via Holton, [NAME] and [NAME]. Also area south of Yeovil, around Hardington Mandeville to East Coker. |  | ? | Somerset County Council | Somerset English Heritage Atlas Area |  | 2012-05-16 10:21:07
1124 | Fuller's Earth Rock | 1 | Fuller's Earth |  | GREY | Uniform | Grey to brown, [NAME]. | FULLER'S EARTH FORMATION | JURASSIC | LIMESTONE | FINE GRAINED | Micrite beds have very uneven tops and bases, deflecting laminations within the marls. | Interbedded bioturbated argillaceous limestones, shelly micritic (biomicritic) limestones and subordinate marly clays and calcareous mudstones, the limestones typically rubbly in the lower parts of the sequence, the clays with micritic limestone nodules. [NAME] (Ornithella, Rugitela) abundant in some beds. | Micrite commonly earthy, friable. | Locally used along the outcrop, mainly as rubble walling (eg. [NAME]). | Outcrop is a narrow, approximate north-south trending zone in south east Somerset stretching from [NAME] area, through Bruton, [NAME], [NAME] to Milborne Port / Milborne Wick area. |  | ? | Somerset County Council | Somerset English Heritage Atlas Area |  | 2012-05-16 10:21:07
1125 | [NAME] | 1 | Doulting Freestone | Extensive areas of worked-out stone to north of Doulting village, quarrying still active. Earlier quarrying in Pitts Wood, Green Quarries Plantation and in various (now filled) quarries along both sides of the Doulting - Chelynch road, and to the east towards Nunney. The stone quarried in early medieval times was rather fine-grained, stone quarried later tends to be coarser grained, with conspicuous, more abundant crinoid ossicles | PALE-YELLOW | Uniform | White to yellow, pale yellow. | INFERIOR OOLITE GROUP | JURASSIC | LIMESTONE | MEDIUM GRAINED |  | Coarse surface finish reflecting the coarse bioclastic nature of the limestone is characteristic.  Approximately cubic crinoid ossicles appearing closely packed in a sparse carbonate matrix are characteristic. |  | Widely used as building stone, rubble walling, copings, plinths, window surrounds and dressings in many towns or villages (eg. Doulting, [NAME]) and churches (including Wells Cathedral) throughout Somerset. | County-wide |  | ? | Somerset County Council | Somerset English Heritage Atlas Area | [NAME], M.W.C., Unpublished.  GIS database of [NAME], [NAME] and Dorset building stones.. | 2012-05-16 10:21:07
1126 | Inferior Oolite | 1 |  | Primrose-coloured varieties predominate in the western part of the outcrop; the stone is characterised by dispersed white crinoid ossicles up to 2mm across.  These coarser grains, the colour and the smaller size of the building blocks distinguish Inferior Oolite limestone from the Beacon Limestone.  Darker varieties are much richer in oolites than rock from the Beacon Limestone of equivalent hue | YELLOW | Uniform | [NAME], ochre, pale yellow to cream or whitish, pale grey to pale brownish. | INFERIOR OOLITE GROUP | JURASSIC | LIMESTONE | MEDIUM GRAINED | Usually rubbly, nodular and relatively poorly-bedded, but this varies depending on the facies, some of which include hummocky and cross-stratified units, oolitic shoals, fining-up sequences etc. | The Inferior Oolite varies markedly and irregularly in thickness and lithology across the County and outcrop. Generally it comprises [NAME], grey-centered shelly, rubbly to nodular sandy limestones interbedded with [NAME], more massive, sandy, ferruginous oolitic limestones. Particular lithologies are distinctive, such as the Hadspen Stone in the Castle Cary area (equivalent to the '[NAME] exposed further north in the outcrop) which is warm brown in colour and comprises massively bedded, ferruginous, sparry detrital, very fossiliferous limestones. |  | Widely quarried and used along the outcrop, especially for rubblestone walling and some ashlar. Some towns along outcrop (eg. [NAME], and to a lesser extent, Castle Cary and Crewkerne) are built substantially from local Inferior Oolite facies, particularly [NAME]. | Fairly extensive, but scattered, broken outcrop extending from Seavington St Mary area through Crewkerne, West Chinnock, North Coker, (via [NAME] and Sherborne, Dorset) to [NAME] and [NAME], then northwards through Mapperton, Hadspen, [NAME], [NAME], [NAME], [NAME] to Doulting area. Then north-eastwards skirting eastwards of Babington, [NAME] and [NAME]. |  | ? | Somerset County Council | Somerset English Heritage Atlas Area |  | 2012-05-16 10:21:07
1127 | Ragstone | 1126 |  | Primrose-coloured varieties predominate in the western part of the outcrop; the stone is characterised by dispersed white crinoid ossicles up to 2mm across.  These coarser grains,  the colour and the smaller size of the building blocks distinguish Inferior Oolite limestone from the Beacon Limestone.  Darker varieties are much richer in oolites than rock from the Beacon Limestone of equivalent hue | YELLOW | Uniform | [NAME], ochre, pale yellow to cream or whitish, pale grey to pale brownish. | INFERIOR OOLITE GROUP | JURASSIC | LIMESTONE | MEDIUM GRAINED | Usually rubbly, nodular and relatively poorly-bedded, but this varies depending on the facies, some of which include hummocky and cross-stratified units, oolitic shoals, fining-up sequences etc. | The Inferior Oolite varies markedly and irregularly in thickness and lithology across the County and outcrop. Generally it comprises [NAME], grey-centered shelly, rubbly to nodular sandy limestones interbedded with [NAME], more massive, sandy, ferruginous oolitic limestones. Particular lithologies are distinctive, such as the Hadspen Stone in the Castle Cary area (equivalent to the '[NAME] exposed further north in the outcrop) which is warm brown in colour and comprises massively bedded, ferruginous, sparry detrital, very fossiliferous limestones. |  | Widely quarried and used along the outcrop, especially for rubblestone walling and some ashlar. Some towns along outcrop (eg. [NAME], and to a lesser extent, Castle Cary and Crewkerne) are built substantially from local Inferior Oolite facies, particularly [NAME]. | A local name applied to Inferior Oolite rough limestones that occur within the fairly extensive, but scattered, broken outcrop extending from Seavington St Mary area through Crewkerne, West Chinnock, North Coker, (via [NAME] and Sherborne, Dorset) to [NAME] and [NAME], then northwards through Mapperton, Hadspen, [NAME], [NAME], [NAME], [NAME] to Doulting area. Then north-eastwards skirting eastwards of Babington, [NAME] and [NAME]. |  | ? | Somerset County Council | Somerset English Heritage Atlas Area |  | 2012-05-16 10:21:07
1128 | [NAME] | 1126 | Cary Hill Stone, Castle Cary Stone |  | YELLOW | Uniform | [NAME], ochre, pale yellow to cream or whitish, pale grey to pale brownish. | INFERIOR OOLITE GROUP | JURASSIC | LIMESTONE | MEDIUM GRAINED | Usually rubbly, nodular and relatively poorly-bedded, but this varies depending on the facies, some of which include hummocky and cross-stratified units, oolitic shoals, fining-up sequences etc. | [NAME], grey-centered shelly, rubbly to nodular sandy limestones interbedded with [NAME], more massive, sandy, ferruginous oolitic limestones. |  | Castle Cary and Crewkerne are built substantially from local Inferior Oolite facies, particularly [NAME] or [NAME]. | A local name applied to the Inferior Oolite limestones that occur within the Hadspen and [NAME] areas of south Somerset. |  | ? | Somerset County Council | Somerset English Heritage Atlas Area |  | 2012-05-16 10:21:07
1129 | Cary Hill Stone | 1128 | [NAME] |  | YELLOW | Uniform | [NAME], ochre, pale yellow to cream or whitish, pale grey to pale brownish. | INFERIOR OOLITE GROUP | JURASSIC | LIMESTONE | MEDIUM GRAINED | Usually rubbly, nodular and relatively poorly-bedded, but this varies depending on the facies, some of which include hummocky and cross-stratified units, oolitic shoals, fining-up sequences etc. | [NAME], grey-centered shelly, rubbly to nodular sandy limestones interbedded with [NAME], more massive, sandy, ferruginous oolitic limestones. |  | Castle Cary and Crewkerne are built substantially from local Inferior Oolite facies, particularly [NAME] or [NAME]. | A local name applied to the Inferior Oolite limestones that occur within the Hadspen and [NAME] areas of south Somerset. |  | ? | Somerset County Council | Somerset English Heritage Atlas Area |  | 2012-05-16 10:21:07
1130 | Castle Cary Stone | 1128 | [NAME] |  | YELLOW | Uniform | [NAME], ochre, pale yellow to cream or whitish, pale grey to pale brownish. | INFERIOR OOLITE GROUP | JURASSIC | LIMESTONE | MEDIUM GRAINED | Usually rubbly, nodular and relatively poorly-bedded, but this varies depending on the facies, some of which include hummocky and cross-stratified units, oolitic shoals, fining-up sequences etc. | [NAME], grey-centered shelly, rubbly to nodular sandy limestones interbedded with [NAME], more massive, sandy, ferruginous oolitic limestones. |  | Castle Cary and Crewkerne are built substantially from local Inferior Oolite facies, particularly [NAME] or [NAME]. | A local name applied to the Inferior Oolite limestones that occur within the Hadspen and [NAME] areas of south Somerset. |  | ? | Somerset County Council | Somerset English Heritage Atlas Area |  | 2012-05-16 10:21:07
1131 | Hadspen Stone | 1126 |  |  | PALE-BROWN | Uniform | Warm pale brown to honey-brown colour | INFERIOR OOLITE GROUP | JURASSIC | LIMESTONE | MEDIUM GRAINED |  | Typically warm brown coloured limestone, comprising massively bedded, ferruginous, sparry detrital, very fossiliferous facies. | The Hadspen Stone is typically more massive and harder than the usual Inferior Oolite rubbly facies. | Castle Cary and Crewkerne are built substantially from local Inferior Oolite facies, particularly [NAME] or [NAME]. | A local name applied to the Inferior Oolite limestones that occur within the Hadspen and [NAME] areas of south Somerset. |  | ? | Somerset County Council | Somerset English Heritage Atlas Area |  | 2012-05-16 10:21:07
1132 | Ham Stone | 1 |  | Worked since Roman times. Two beds are worked, a '[NAME] which is a pale brown or [NAME] colour, the most distinctive and well known, and a 'Grey Bed' darker in colour and more durable. | PALE-YELLOW | Banded | Pale yellow, cream, pale brown. | HAM HILL LIMESTONE MEMBER | JURASSIC | SANDSTONE, FINE-GRAINED | MEDIUM GRAINED | Parallel-bedding and particularly cross-bedding structures are common and characteristic, typically picked out by darker, brownish colour to laminae. | Warm, golden yellow to pale brown, shelly bioclastic, well-cemented, medium to coarse-grained limestone containing comminuted shells and thin sandy beds. A conglomeratic unit occurs at the base. Limestone comprised mainly of a mass of small shell fragments bound together by a strongly ferruginous calcareous cement. Lithology forms a lens within the '[NAME] and wedges out laterally into undifferentiated Bridport Sand Formation. |  | High quality, versatile and attractive stone - one of the most important and distinctive building stones in Somerset. Widely used for mouldings, stone roof tiles; also for fine ashlar and rubble walling. Used extensively for walls and houses in nearby villages and high status, large mansions / country estates, such as Montacute House. | Well-defined plateau with extensive quarry workings on Ham Hill near Yeovil. Smaller outcrops (much reduced in thickness), occur at Chiselborough Hill, West Chinnock Hill and between Haselbury Pluncknett and [NAME], approximately 3 km east of Crewkerne. |  | ? | Somerset County Council | Somerset English Heritage Atlas Area |  | 2012-05-16 10:21:07
1133 | Ham [NAME] | 1132 | Ham Stone | Worked since Roman times. Two beds are worked, a '[NAME] which is a pale brown or [NAME] colour, the most distinctive and well known, and a 'Grey Bed' darker in colour and more durable. | PALE-YELLOW | Banded | Pale yellow, cream, pale brown. | HAM HILL LIMESTONE MEMBER | JURASSIC | SANDSTONE, FINE-GRAINED | MEDIUM GRAINED | Strong bedding; cross-bedding is commonly visible . | Very coarse-grained limestone with strong bedding fabric defined by the long axes of fossil oyster shell fragments and variation in cementation; characteristic colour. | [NAME] layers tend to fall out of the surfaces of building blocks and repairs with suitably pigmented mortar are commonly seen. | High quality, versatile and attractive stone - one of the most important and distinctive building stones in Somerset. Widely used for mouldings, stone roof tiles; also for fine ashlar and rubble walling. Used extensively for walls and houses in nearby villages and high status, large mansions / country estates, such as Montacute House. | County-wide but mainly in the south east |  | ? | Somerset County Council | Somerset English Heritage Atlas Area | [NAME], M.W.C., Unpublished.  GIS database of [NAME], [NAME] and Dorset building stones.. | 2012-05-16 10:21:07
1134 | North Perrott Stone | 1132 | Ham Stone |  | PALE-YELLOW | Banded | Pale yellow, cream, pale brown. | HAM HILL LIMESTONE MEMBER | JURASSIC | SANDSTONE, FINE-GRAINED | MEDIUM GRAINED | Parallel-bedding and particularly cross-bedding structures are common and characteristic, typically picked out by darker, brownish colour to laminae. | Warm, golden yellow to pale brown, shelly bioclastic, well-cemented, medium to coarse-grained limestone containing comminuted shells and thin sandy beds. A conglomeratic unit occurs at the base. Limestone comprised mainly of a mass of small shell fragments bound together by a strongly ferruginous calcareous cement. Lithology forms a lens within the '[NAME] and wedges out laterally into undifferentiated Bridport Sand Formation. |  | Used extensively for walls and houses in North Perrott, and nearby villages. | A local name applied to the Ham Stone where it outcrops around the North Perrot and Haselbury Pluncknett area. |  | ? | Somerset County Council | Somerset English Heritage Atlas Area |  | 2012-05-16 10:21:07
1135 | [NAME] Member | 1 |  |  |  |  |  | BARRINGTON MEMBER |  | NOT ENTERED |  |  |  |  |  |  |  | ? | Somerset County Council | Somerset English Heritage Atlas Area |  | 2012-05-16 10:21:07
1136 | [NAME] | 1135 |  | Including the underlying 'Marlstone', the Junction Bed forms a very distinctive flat-topped platform (dip slopes) of low hills, especially around the Ilminster area. | PALE-WHITE | Uniform | Pale cream to pale yellow, [NAME], whitish, [NAME], often iron stained (blackish, limonitic). | BARRINGTON MEMBER | JURASSIC | LIMESTONE | FINE GRAINED | Mostly rubbly, indistinctly bedded. | A condensed sequence of whitish grey to cream coloured biomicrites, calcareous marls or calcarenites, with brown ferruginous inclusions or iron-shot. Sparsely oolitic, often rubbly, earthy and poorly bedded in appearance. Highly fossiliferous with shell debris, crinoids and especially ammonites (such as Dactylioceras, [NAME] or [NAME]), but rarely belemnites (in contrast with the underlying Marlstone). | Some beds rather earthy, relatively soft. Often weathers with brownish/blackish, mottled or banded appearance (relating to ferruginous/algal patches within the rock). | Rough-faced rubblestone walling, old walls in central Yeovil and [NAME] church, Yeovil. Quarried in many small quarries near Barrington, South Petherton, Montacute to Trent (Dorset) and [NAME] area. | An alternative name applied to the Upper Lias limestones that occur in an approximately east to west trending discontinuous belt from around Ilminster, Beacon Hill, [NAME]  and Kingstone eastwards via Barrington, Hurcott, South Petherton, Lufton, [NAME], Sutton Montis, north [NAME], and along the Somerset/Dorset border between [NAME] and [NAME] to [NAME]. Small outcrops also occur on the hillslopes at [NAME], near [NAME] and in the Doulting area. Closely associated with the underlying 'Marlstone'. |  | ? | Somerset County Council | Somerset English Heritage Atlas Area |  | 2012-05-16 10:21:07
1137 | [NAME] limestone | 1135 | Junction Bed | Including the underlying 'Marlstone', the Junction Bed forms a very distinctive flat-topped platform (dip slopes) of low hills, especially around the Ilminster area. | PALE-WHITE | Uniform | Pale cream to pale yellow, [NAME], whitish, [NAME], often iron stained (blackish, limonitic). | BARRINGTON MEMBER | JURASSIC | LIMESTONE | FINE GRAINED | Mostly rubbly, indistinctly bedded. | A condensed sequence of whitish grey to cream coloured biomicrites, calcareous marls or calcarenites, with brown ferruginous inclusions or iron-shot. Sparsely oolitic, often rubbly, earthy and poorly bedded in appearance. Highly fossiliferous with shell debris, crinoids and especially ammonites (such as Dactylioceras, [NAME] or [NAME]), but rarely belemnites (in contrast with the underlying Marlstone). | Some beds rather earthy, relatively soft. Often weathers with brownish/blackish, mottled or banded appearance (relating to ferruginous/algal patches within the rock). | Rough-faced rubblestone walling, old walls in central Yeovil and [NAME] church, Yeovil. Quarried in many small quarries near Barrington, South Petherton, Montacute to Trent (Dorset) and [NAME] area. | Occurs in an approximately east to west trending discontinuous belt from around Ilminster, Beacon Hill, [NAME]  and Kingstone eastwards via Barrington, Hurcott, South Petherton, Lufton, [NAME], Sutton Montis, north [NAME], and along the Somerset/Dorset border between [NAME] and [NAME] to [NAME]. Small outcrops also occur on the hillslopes at [NAME], near [NAME] and in the Doulting area. Closely associated with the underlying 'Marlstone'. |  | ? | Somerset County Council | Somerset English Heritage Atlas Area |  | 2012-05-16 10:21:07
1138 | Junction Bed | 1135 | [NAME] limestone | Including the underlying 'Marlstone', the Junction Bed forms a very distinctive flat-topped platform (dip slopes) of low hills, especially around the Ilminster area. | PALE-WHITE | Uniform | Pale cream to pale yellow, [NAME], whitish, [NAME], often iron stained (blackish, limonitic). | BARRINGTON MEMBER | JURASSIC | LIMESTONE | FINE GRAINED | Mostly rubbly, indistinctly bedded. | A condensed sequence of whitish grey to cream coloured biomicrites, calcareous marls or calcarenites, with brown ferruginous inclusions or iron-shot. Sparsely oolitic, often rubbly, earthy and poorly bedded in appearance. Highly fossiliferous with shell debris, crinoids and especially ammonites (such as Dactylioceras, [NAME] or [NAME]), but rarely belemnites (in contrast with the underlying Marlstone). | Some beds rather earthy, relatively soft. Often weathers with brownish/blackish, mottled or banded appearance (relating to ferruginous/algal patches within the rock). | Rough-faced rubblestone walling, old walls in central Yeovil and [NAME] church, Yeovil. Quarried in many small quarries near Barrington, South Petherton, Montacute to Trent (Dorset) and [NAME] area. | Occurs in an approximately east to west trending discontinuous belt from around Ilminster, Beacon Hill, [NAME]  and Kingstone eastwards via Barrington, Hurcott, South Petherton, Lufton, [NAME], Sutton Montis, north [NAME], and along the Somerset/Dorset border between [NAME] and [NAME] to [NAME]. Small outcrops also occur on the hillslopes at [NAME], near [NAME] and in the Doulting area. Closely associated with the underlying 'Marlstone'. |  | ? | Somerset County Council | Somerset English Heritage Atlas Area |  | 2012-05-16 10:21:07
1139 | [NAME] | 1135 |  |  | PALE-WHITE | Uniform | Pale cream to pale yellow, [NAME], whitish, [NAME], often iron stained (blackish, limonitic). | BARRINGTON MEMBER | JURASSIC | LIMESTONE | FINE GRAINED | Mostly rubbly, indistinctly bedded. | A condensed sequence of whitish grey to cream coloured biomicrites, calcareous marls or calcarenites, with brown ferruginous inclusions or iron-shot. Sparsely oolitic, often rubbly, earthy and poorly bedded in appearance. Highly fossiliferous with shell debris, crinoids and especially ammonites (such as Dactylioceras, [NAME] or [NAME]), but rarely belemnites (in contrast with the underlying Marlstone). | Some beds rather earthy, relatively soft. Often weathers with brownish/blackish, mottled or banded appearance (relating to ferruginous/algal patches within the rock). | Rough-faced rubblestone walling, old walls in central Yeovil and [NAME] church, Yeovil. | A local name applied to the Upper lias limestones ([NAME]) which outcrop within the [NAME] and adjacent (eg. [NAME]) areas. |  | ? | Somerset County Council | Somerset English Heritage Atlas Area |  | 2012-05-16 10:21:07
1140 | Marlstone | 1 |  | Including the 'Upper Lias limestones', the Junction Bed forms a very distinctive flat-topped platform of low hills, especially around the Ilminster area. | GREY | Uniform | Characteristically ferruginous weathering, rusty brown, pale fawn, [NAME]. | MARLSTONE ROCK MEMBER (WESSEX BASIN) | JURASSIC | LIMESTONE | FINE GRAINED | Mostly massive. | Grey to rusty-brown , ferruginous shelly, calcarenite to silty limestone, locally oolitic and iron-shot, occasionally with mudstone clasts and pebbles; may pass into a more massive, grey-brown ferruginous sandy limestone with clay partings. Highly fossiliferous, often crowded with belemnites, brachiopods and bivalves. |  | Used along outcrop length, for variety of purposes particularly rubblestone, walling and some ashlar, and some very large quoins. Used extensively in South Petherton area and Ilminster areas, including Barrington Court garden walls and village, also Sutton Montis and Glastonbury. | Occurs in an approximately east to west trending discontinuous belt from around Ilminster, [NAME]  and Kingstone eastwards via Barrington, Hurcott, South Petherton to Stoke-sub-Hamdon, Lufton, [NAME], Sutton Montis, north [NAME], and along the Somerset/Dorset border between [NAME] and [NAME] to [NAME]. A small outcrop also occurs on the hillslopes at [NAME], near [NAME]. Closely associated with the overlying '[NAME] limestones', but can be mapped separately in the Ilminster area where the sequence is thickest. |  | ? | Somerset County Council | Somerset English Heritage Atlas Area |  | 2012-05-16 10:21:07
1141 | Petherton Stone | 1140 | Marlstone | Including the 'Upper Lias limestones', the Junction Bed forms a very distinctive flat-topped platform of low hills, especially around the Ilminster area. | GREY | Uniform | Characteristically ferruginous weathering, rusty brown, pale fawn, [NAME]. | MARLSTONE ROCK MEMBER (WESSEX BASIN) | JURASSIC | LIMESTONE | FINE GRAINED | Mostly massive. | Grey to rusty-brown , ferruginous shelly, calcarenite to silty limestone, locally oolitic and iron-shot, occasionally with mudstone clasts and pebbles; may pass into a more massive, grey-brown ferruginous sandy limestone with clay partings. Highly fossiliferous, often crowded with belemnites, brachiopods and bivalves. |  | Used along outcrop length, for variety of purposes particularly rubblestone, walling and some ashlar, and some very large quoins. Used extensively in South Petherton area. | A local name applied to the Marlstone facies mainly within the South Petherton area. |  | ? | Somerset County Council | Somerset English Heritage Atlas Area |  | 2012-05-16 10:21:07
1142 | [NAME] | 1140 | Marlstone | Including the 'Upper Lias limestones', the Junction Bed forms a very distinctive flat-topped platform of low hills, especially around the Ilminster area. | GREY | Uniform | Characteristically ferruginous weathering, rusty brown, pale fawn, [NAME]. | MARLSTONE ROCK MEMBER (WESSEX BASIN) | JURASSIC | LIMESTONE | FINE GRAINED | Mostly massive. | Grey to rusty-brown , ferruginous shelly, calcarenite to silty limestone, locally oolitic and iron-shot, occasionally with mudstone clasts and pebbles; may pass into a more massive, grey-brown ferruginous sandy limestone with clay partings. Highly fossiliferous, often crowded with belemnites, brachiopods and bivalves. |  | Used along outcrop length, for variety of purposes particularly rubblestone, walling and some ashlar, and some very large quoins. Used extensively in Moolham area. | A local name applied to the Marlstone facies mainly within the [NAME] area. |  | ? | Somerset County Council | Somerset English Heritage Atlas Area |  | 2012-05-16 10:21:07
1143 | [NAME] | 1140 | Blue Lias |  | GREY | Uniform | [NAME], fawn to pale cream grey. | SPARGROVE LIMESTONE | JURASSIC | LIMESTONE | FINE GRAINED | Varies from massive to interbedded limestones. | Interbedded grey, muddy limestones and thin silty mudstones around Spargrove - becoming more sandy, coarser-grained, bioclastic flaggy limestones in the Shepton Mallet area. |  | A general, but very locally used building and walling stone. Typically used extensively where present, eg. [NAME]. | Confined to small outcrop area around Evercreech (east of [NAME], Spargrove). Lateral equivalents of the Spargrove Limestone are believed to also be present in the Shepton Mallet and Maesbury Camp areas (where they were formerly assigned to the upper zones of the Downside Stone littoral facies). |  | ? | Somerset County Council | Somerset English Heritage Atlas Area |  | 2012-05-16 10:21:07
1145 | Blue Lias | 1213 | Lias | Narrow cross-cutting calcite veins along which the rock fails forming one face of the building block are common, usually weathered [NAME].  Blue Lias limestone from deeper modern quarries include in many cases a few blocks laid with such [NAME] veins visible to relieve the rather sombre grey appearance of Blue Lias limestone walling. When fresh, the rock is dark to light grey but it weathers fawn or [NAME].  Blocks with weathered fawn outer parts (including along joints) and grey interiors (blue-hearted) are common. | GREY | Uniform | [NAME], fawn. | BLUE LIAS FORMATION | JURASSIC | LIMESTONE | FINE GRAINED | Some blocks have strong bedding lamination defined by colour and grain size.  Bedding may be accentuated by shell fragments lying in it. | Typically grey or fawn, fine-grained, muddy (calcilutitic) limestone.  A range of 'subfacies' occurs:                                                                                          i) Blue-grey, finely crystalline, hard and splintery, with bedding tops and bases either level or wavy,                                                                                       ii) Laminated, very-fine grained, porcellaneous texture, flat top and basal surfaces (Somerton area),                                                                                           iii) [NAME] limestones composed of finely comminuted remains of fossil oysters and other bivalves in a limy-mud matrix.                                                       Individual grains cannot usually be resolved with a hand lens. Beds often fossiliferous with interbedded sparsely fossiliferous layers - although small shells are not uncommon. | Scaling of blocks is widespread. Building blocks are usually made of the complete thickness of a limestone bed,  no more than 30cm thick and in many cases much thinner.The presence of finely divided iron pyrites (especially in limestones from the Taunton/Beer Crocombe area) breaks down yielding sulphuric acid upon weathering, thereby facilitating the decay and crumbling of the stone. Tendency to also weather along lamination planes. | One of the most important buiding stones within Somerset, with key use as a walling stone. Usually laid in courses (coursed rubble or rough ashlar), which may be of different thicknesses, each course corresponding to blocks taken from a single bed of limestone.  Used for the quoins and dressings of buildings in the Blackdown Hills adjacent to the Blue Lias outcrop. Also used as floor slabs and tombstones. | In a zone along the south side of the Vale of Taunton Deane, the Polden Ridge, and [NAME], from Corfe in the west, to Street and Glastonbury in the east, also Langport, Somerton, [NAME] and [NAME] areas. Northwards through Ditcheat to Shepton Mallet area ('Downside Stone', a  sublittoral facies of the Blue Lias - see above) and southern flanks of the Mendips High. | 2010-02-16 00:00:00 | A H King | Somerset County Council | Somerset English Heritage Atlas Area | Fieldwork;                                                                                                                       [NAME], W.A.E. 1906: The Geology of the Country between Wellington and Chard. Memoirs of the Geological Survey of England and Wales (Sheet 311), HMSO. 68pp.                           Green, G.W. & Welch, F.B.A. 1965; Geology of the Country around Wells and Cheddar. Memoir of the Geological Survey of Great Britain (Sheet 280), Second impression with amendments (1977), [NAME]. 226pp.                                                                                                         Edmonds, E.A. & Williams, [NAME]: Geology of the country around Taunton and the Quantock Hills.  Memoir of the British Geological Survey (Sheet 295), HMSO. 92pp.                                                                                                                                             Whittaker, A. & Green, G.W. 1983: Geology of the country around Weston-super-Mare. Memoir of the Geological Survey of Great Britain (Sheet 279 and parts of 263 and 295), HMSO. 148pp.                                                                            Hardy, P. 1999: The Geology of Somerset. Ex Libris Press, [NAME].                                 Prudden, H.C. 2001: Geology and Landscape of Taunton Deane, Taunton Deane Borough Council. 141pp.                                                                                                           Prudden, H.C. 2003: Somerset Building Stone - a Guide. Proceedings of the Somerset Archaeology and Natural History Society, 146, 27-36.                                                                                                            [NAME], M.W.C., 2006.  Building with stone in East Devon and adjacent parts of Dorset and Somerset.  Report and Transactions of the Devonshire Association for the Advancement of Science Literature and the Arts, 138, 185-224. | 2012-05-16 10:21:07
1146 | Downside Stone | 1145 | Blue Lias |  | PALE-GREY | Uniform | Pale cream-grey, [NAME] | BLUE LIAS FORMATION | JURASSIC | LIMESTONE | COARSE GRAINED | Mainly massive. | Coarse-grained, bioclastic limestones, pebbly limestones becoming conglomeratic, the pebbles in the latter consisting mainly of limestone and chert derived from the Carboniferous Limestone with occasional quartz pebbles from the [NAME] beds ('Old Red Sandstone'). Fossils locally abundant, including bivalves, gastropods and belemnites. | Generally harder, better weathering than 'normal' Blue Lias facies.Pebbles within the conglomeratic lithologies tend to weather out producing a 'honeycombe rock'. | Used within Mendip area as building stone, occasionally for walling; the coarse conglomeratic variety used especially in Wells. Unlike the Blue Lias, the Downside Stone is no longer quarried. | A littoral facies of the Blue Lias, which occurs within the Mendip area, the thickest development being present around Shepton Mallet and Maesbury Camp. |  | ? | Somerset County Council | Somerset English Heritage Atlas Area |  | 2012-05-16 10:21:07
1147 | [NAME] | 1145 | Downside Stone |  | PALE-GREY | Uniform | Pale cream-grey, [NAME] | BLUE LIAS FORMATION | JURASSIC | LIMESTONE | COARSE GRAINED | Mainly massive. | Coarse-grained, bioclastic limestones, pebbly limestones becoming conglomeratic, the pebbles in the latter consisting mainly of limestone and chert derived from the Carboniferous Limestone with occasional quartz pebbles from the [NAME] beds ('Old Red Sandstone'). Fossils locally abundant, including bivalves, gastropods and belemnites. | Generally harder, better weathering than 'normal' Blue Lias facies.Pebbles within the conglomeratic lithologies tend to weather out producing a 'honeycombe rock'. | Used within Mendip area as building stone, occasionally for walling. Unlike the Blue Lias, the Chilcote Stone is no longer quarried. | A local name applied to the Downside Stone in the Chilcote area. |  | ? | Somerset County Council | Somerset English Heritage Atlas Area |  | 2012-05-16 10:21:07
1148 | Harptree Beds | 1145 | Blue Lias |  | BUFF | Uniform | [NAME], fawn. | HARPTREE BEDS | JURASSIC | LIMESTONE | FINE GRAINED |  | A highly siliceous facies of the Blue Lias (and part Inferior Oolite) comprising massive bedded buff-coloured cherts, with yellowish clayey partings. |  | Used locally within the outcrop area for buildings and walls, mainly as rubblestone. | A siliceous facies of the Lias (and Inferior Oolite) that occur on the northern side of the Mendip Plateau between east Harptree and [NAME]. The most extensive spreads of Harptree Beds occur in two areas: one between the Castle of Comfort Inn on the west and [NAME]'s [NAME] on the east, and the other extending from southwest of Chewton Mendip eastwards as far as Emborough |  | ? | Somerset County Council | Somerset English Heritage Atlas Area |  | 2012-05-16 10:21:07
1149 | Thurlebeare Stone | 1145 | Blue Lias | Narrow cross-cutting calcite veins along which the rock fails forming one face of the building block are common, usually weathered [NAME].  Blue Lias limestone from deeper modern quarries include in many cases a few blocks laid with such [NAME] veins visible to relieve the rather sombre grey appearance of Blue Lias limestone walling. When fresh, the rock is dark to light grey but it weathers fawn or [NAME].  Blocks with weathered fawn outer parts (including along joints) and grey interiors (blue-hearted) are common | GREY | Uniform | [NAME], fawn. | BLUE LIAS FORMATION | JURASSIC | LIMESTONE | FINE GRAINED | Bedding lamination defined by variation in resistance to weathering present in some blocks; layers rich in shells lying in the bedding present in some blocks; cross-cutting calcite veins stained orange or ochre present in some blocks. | Typically grey or blue-grey to fawn, fine-grained, muddy (calcilutitic) limestone.  In part hard and splintery, or finely laminated, or flaggy, composed of finely comminuted remains of fossil oysters and other bivalves in a limy-mud matrix.                                                       Individual grains cannot usually be resolved with a hand lens. Beds often fossiliferous with interbedded sparsely fossiliferous layers - although small shells are not uncommon. | Very susceptible to surface spalling | Key use as a walling stone. Usually laid in courses (coursed rubble or rough ashlar), which may be of different thicknesses, each course corresponding to blocks taken from a single bed of limestone.  Used for the quoins and dressings of buildings in the Blackdown Hills adjacent to the Blue Lias outcrop. Also used as floor slabs and tombstones. | In a zone from Membury through Axminster to Uplyme |  | ? | Somerset County Council | Somerset English Heritage Atlas Area | [NAME], M.W.C., Unpublished.  GIS database of [NAME], [NAME] and Dorset building stones.. | 2012-05-16 10:21:07
1150 | [NAME] | 1145 | Blue Lias | Narrow cross-cutting calcite veins along which the rock fails forming one face of the building block are common, usually weathered [NAME].  Blue Lias limestone from deeper modern quarries include in many cases a few blocks laid with such [NAME] veins visible to relieve the rather sombre grey appearance of Blue Lias limestone walling. When fresh, the rock is dark to light grey but it weathers fawn or [NAME].  Blocks with weathered fawn outer parts (including along joints) and grey interiors (blue-hearted) are common | GREY | Uniform | [NAME], fawn. | BLUE LIAS FORMATION | JURASSIC | LIMESTONE | FINE GRAINED | Bedding lamination defined by variation in resistance to weathering present in some blocks; layers rich in shells lying in the bedding present in some blocks; cross-cutting calcite veins stained orange or ochre present in some blocks. | Typically grey or blue-grey to fawn, fine-grained, muddy (calcilutitic) limestone.  In part hard and splintery, or finely laminated, or flaggy, composed of finely comminuted remains of fossil oysters and other bivalves in a limy-mud matrix.                                                       Individual grains cannot usually be resolved with a hand lens. Beds often fossiliferous with interbedded sparsely fossiliferous layers - although small shells are not uncommon. | Very susceptible to surface spalling | Key use as a walling stone. Usually laid in courses (coursed rubble or rough ashlar), which may be of different thicknesses, each course corresponding to blocks taken from a single bed of limestone.  Used for the quoins and dressings of buildings in the Blackdown Hills adjacent to the Blue Lias outcrop. Also used as floor slabs and tombstones. | In a zone from Membury through Axminster to Uplyme |  | ? | Somerset County Council | Somerset English Heritage Atlas Area | [NAME], M.W.C., Unpublished.  GIS database of [NAME], [NAME] and Dorset building stones.. | 2012-05-16 10:21:07
1151 | Keinton Stone | 1145 | Blue Lias | Narrow cross-cutting calcite veins along which the rock fails forming one face of the building block are common, usually weathered [NAME].  Blue Lias limestone from deeper modern quarries include in many cases a few blocks laid with such [NAME] veins visible to relieve the rather sombre grey appearance of Blue Lias limestone walling. When fresh, the rock is dark to light grey but it weathers fawn or [NAME].  Blocks with weathered fawn outer parts (including along joints) and grey interiors (blue-hearted) are common | GREY | Uniform | [NAME], fawn. | BLUE LIAS FORMATION | JURASSIC | LIMESTONE | FINE GRAINED | Bedding lamination defined by variation in resistance to weathering present in some blocks; layers rich in shells lying in the bedding present in some blocks; cross-cutting calcite veins stained orange or ochre present in some blocks. | Typically grey or blue-grey to fawn, fine-grained, muddy (calcilutitic) limestone.  In part hard and splintery, or finely laminated, or flaggy, composed of finely comminuted remains of fossil oysters and other bivalves in a limy-mud matrix.                                                       Individual grains cannot usually be resolved with a hand lens. Beds often fossiliferous with interbedded sparsely fossiliferous layers - although small shells are not uncommon. | Very susceptible to surface spalling | Key use as a walling stone. Usually laid in courses (coursed rubble or rough ashlar), which may be of different thicknesses, each course corresponding to blocks taken from a single bed of limestone.  Used for the quoins and dressings of buildings in the Blackdown Hills adjacent to the Blue Lias outcrop. Also used as floor slabs and tombstones. | In a zone from Membury through Axminster to Uplyme |  | ? | Somerset County Council | Somerset English Heritage Atlas Area | [NAME], M.W.C., Unpublished.  GIS database of [NAME], [NAME] and Dorset building stones.. | 2012-05-16 10:21:07
1152 | Langport Stone | 1145 | Blue Lias | Narrow cross-cutting calcite veins along which the rock fails forming one face of the building block are common, usually weathered [NAME].  Blue Lias limestone from deeper modern quarries include in many cases a few blocks laid with such [NAME] veins visible to relieve the rather sombre grey appearance of Blue Lias limestone walling. When fresh, the rock is dark to light grey but it weathers fawn or [NAME].  Blocks with weathered fawn outer parts (including along joints) and grey interiors (blue-hearted) are common | GREY | Uniform | [NAME], fawn. | BLUE LIAS FORMATION | JURASSIC | LIMESTONE | FINE GRAINED | Bedding lamination defined by variation in resistance to weathering present in some blocks; layers rich in shells lying in the bedding present in some blocks; cross-cutting calcite veins stained orange or ochre present in some blocks. | Typically grey or blue-grey to fawn, fine-grained, muddy (calcilutitic) limestone.  In part hard and splintery, or finely laminated, or flaggy, composed of finely comminuted remains of fossil oysters and other bivalves in a limy-mud matrix.                                                       Individual grains cannot usually be resolved with a hand lens. Beds often fossiliferous with interbedded sparsely fossiliferous layers - although small shells are not uncommon. | Very susceptible to surface spalling | Key use as a walling stone. Usually laid in courses (coursed rubble or rough ashlar), which may be of different thicknesses, each course corresponding to blocks taken from a single bed of limestone.  Used for the quoins and dressings of buildings in the Blackdown Hills adjacent to the Blue Lias outcrop. Also used as floor slabs and tombstones. | In a zone from Membury through Axminster to Uplyme |  | ? | Somerset County Council | Somerset English Heritage Atlas Area | [NAME], M.W.C., Unpublished.  GIS database of [NAME], [NAME] and Dorset building stones.. | 2012-05-16 10:21:07
1153 | Ostrea Beds | 1145 | Blue Lias | Narrow cross-cutting calcite veins along which the rock fails forming one face of the building block are common, usually weathered [NAME].  Blue Lias limestone from deeper modern quarries include in many cases a few blocks laid with such [NAME] veins visible to relieve the rather sombre grey appearance of Blue Lias limestone walling. When fresh, the rock is dark to light grey but it weathers fawn or [NAME].  Blocks with weathered fawn outer parts (including along joints) and grey interiors (blue-hearted) are common | GREY | Uniform | [NAME], fawn. | BLUE LIAS FORMATION | JURASSIC | LIMESTONE | FINE GRAINED | Some blocks have strong bedding lamination defined by colour and grain size.  Bedding may be accentuated by shell fragments lying in it. | Typically grey or blue-grey to fawn, fine-grained, muddy (calcilutitic) limestone, often regularly bedded.  In part hard and splintery, or evenly-bedded finely laminated, or flaggy limestones, composed of finely comminuted remains of fossil oysters and other bivalves in a limy-mud matrix. Individual grains cannot usually be resolved with a hand lens. | Scaling of blocks is widespread. Building blocks are usually made of the complete thickness of a limestone bed,  no more than 30cm thick and in many cases much thinner. Tendency to also weather along lamination planes. | Key use as a walling stone. Usually laid in courses (coursed rubble or rough ashlar), which may be of different thicknesses, each course corresponding to blocks taken from a single bed of limestone.  Used for the quoins and dressings of buildings in the Blackdown Hills adjacent to the Blue Lias outcrop. Also used as floor slabs and tombstones. | Local name applied to the lower parts of the Blue Lias limestones (adjoining the underlying White Lias) across the outcrop area. The term 'Pre-planorbis [NAME]' is approximately equivalent |  | ? | Somerset County Council | Somerset English Heritage Atlas Area |  | 2012-05-16 10:21:07
1154 | White Lias | 1213 |  | In many cases laid as random rubble with an effect like crazy-paving. | WHITE | Uniform | White, pale grey, cream-coloured. | LANGPORT MEMBER | TRIASSIC | LIMESTONE | FINE GRAINED | Uniform. Some beds exhibit fine parallel lamination, often more discernable on weathered surfaces. | Uniform, white or pale grey limestone (with mudstone partings in outcrop) and sugary texture in some cases. Tendency to be rubbly in the lower part, more regular, even-bedded in the upper part. Distinguished from Portland Stone by lack of oolitic texture and from [NAME] by coarser grain size, lack of faint nodular structure, lack of scaling and harder nature. | Fine-grained (porcellaneous) facies often very hard. Some facies are tabular, with parallel flat to undulatory, upper and lower surfaces. | Rubble walling and some ashlar. Favoured by Victorian builders and used for decorative polychrome effect in combination with Blue Lias limestone in some buildings. | On the escarpment on the south side of the Vale of Taunton Deane and the Somerset Levels from Hatch Beauchamp in the west to Langport in the east. |  | ? | Somerset County Council | Somerset English Heritage Atlas Area |  | 2012-05-16 10:21:07
1155 | [NAME] | 1154 | White Lias | In many cases laid as random rubble with an effect like crazy-paving. | WHITE | Uniform | White, pale grey, cream-coloured. | LANGPORT MEMBER | TRIASSIC | LIMESTONE | FINE GRAINED | Uniform. Some beds exhibit fine parallel lamination, often more discernable on weathered surfaces. | Uniform, white or pale grey limestone (with mudstone partings in outcrop) and sugary texture in some cases. Tendency to be rubbly in the lower part, more regular, even-bedded in the upper part. Distinguished from Portland Stone by lack of oolitic texture and from [NAME] by coarser grain size, lack of faint nodular structure, lack of scaling and harder nature. | Fine-grained (porcellaneous) facies often very hard. Some facies are tabular, with parallel flat to undulatory, upper and lower surfaces. | Rubble walling and some ashlar. Favoured by Victorian builders and used for decorative polychrome effect in combination with Blue Lias limestone in some buildings. | On the escarpment on the south side of the Vale of Taunton Deane and the Somerset Levels from Hatch Beauchamp in the west to Langport in the east. |  | ? | Somerset County Council | Somerset English Heritage Atlas Area |  | 2012-05-16 10:21:07
1156 | Wedmore Stone | 1154 | White Lias | Limestone beds usually thin (up to 10cm thick, occasionally more) and tabular. | PALE-GREY | Banded | Grey to pale grey, becoming pale [NAME], honey-brown or yellowish, occasionally with thin, darker grey bands. | WEDMORE STONE | TRIASSIC | LIMESTONE | FINE GRAINED | Small scale lamination and current-bedded layers present in cross-section of tabular blocks, often indicated by slight changes in colour or lithology (eg. sandy horizons). Bedding also indicated by presence of layers of cross-sectioned, current-orientated, thin bivalve shells. | Hard bioclastic limestone composed mainly of shell fragments. Pale grey on fresh surfaces, but weathering to characteristic yellow-buff, honey-brown colour, often retaining a grey 'core'. Local intercalations of pale sand and darker grey argillaceous limestone occcur, but main lithological variant is to west and south (especially around village of Sand) where limestone facies passes laterally into sand and sandrock. | Usually various shades of grey when first quaried, but weathers to characteristic [NAME] or brown-honey colour, sometimes with grey 'core' to block. Sandy layers within limestones are softer, and more friable, occasionally exhibiting small 'honeycombe weathering' effect. | Widely used in Wedmore and immediately surrounding area as tabular building stone especially in walls of buildings (including [NAME] church) and external walls. | Confined mainly to higher ridge and ground in the [NAME] area, locally extending towards [NAME] and Sand villages. |  | ? | Somerset County Council | Somerset English Heritage Atlas Area |  | 2012-05-16 10:21:07
1157 | North Curry Sandstone | 1 |  |  | PALE-GREY | Banded | Grey, [NAME], bright greenish grey, fawn (grey with a touch of brown). | ARDEN SANDSTONE FORMATION | TRIASSIC | SANDSTONE | FINE GRAINED | Bedding defined by colour and grain size; cross bedding; [NAME]. | Distinctive green-grey colour; variable grain size from siltstone to very coarse-grained sandstone and granule conglomerate; clasts include quartz and feldspar, exotic lithic framents including red and green rock-types, and most characteristically, white angular fragments of intraformational calcareous siltstone, set in a pale grey calcareous cement; ubiquitous cross-bedding from units 2 cm thick in siltstone to those 50 cm thick in coarse-grained sandstone. | Beds rich in calcareous siltstone tend to be weathered out. | Widely used in conjuction with Blue Lias limestone east of Taunton; mainly used for the quoins and dressings of high status buildings west of Taunton, especially medieval churches, but also as rubble walling in Taunton area. A variant, composed mainly of angular, coarse sand grade fragments of calcareous siltstone or silty limestone, is used in the quoins and dressings of churches as far north as [NAME] and [NAME]. | On the rising ground between [NAME] and West Sedge Moor between Knapp and Staithe; in Vale of Taunton Deane extending west to Milverton and sparingly, as far north as [NAME] and Crowcombe. |  | ? | Somerset County Council | Somerset English Heritage Atlas Area |  | 2012-05-16 10:21:07
1158 | [NAME] | 1 | [NAME], Dolomitic Conglomerate |  | GREY | Mottled | Pale to dark grey limestone fragments, set in reddish to reddish-black matrix, pinkish/reddish tinge. | MERCIA MUDSTONE GROUP (MARGINAL FACIES) | TRIASSIC | BRECCIA | PEB | Usually fairly massive, but may exhibit coarse sets of truncated, bedding surfaces, occasional separated by very thin (up to 1cm) marl partings. | Clast-supported breccia or conglomerate composed of grey angular to subangular fragments of Carboniferous Limestone within a matrix of reddish to red-brown matrix of sandy marl or fine-grained limestone, overall effect is pinkish/pinkish-grey hue to rock. Limestone clasts usually 2-4cm diameter, but larger boulder-sized clasts occur. Characteristised by exhibiting secondary changes, in particular haematitization (which produces an intense red coloured 'earthy' iron-rich friable rock termed 'red ochre') and dolomitization (which typically turns the rock yellowish). | Becomes softer and friable, especially the cement matrix, upon weathering of haematitized and dolomitized forms of the rock. Black lichen growth typical of damp conditions. | Works readily into long pieces used as lintels, chimney pieces, gateposts and paving stones and rubblestone walling in numerous settlements on southern side of Mendip Hills , especially Cheddar, Draycott, [NAME], Wedmore, Easton and Wookey. | Eroded gorges and flanks of Mendip Hills area (Dolomitic Conglomerate), but mainly quarried (eg. as [NAME]) on southern flanks of Mendip Hills between Shipham and Wells, particularly around Draycott, [NAME], Easton, Wookey Station and East Horrington. |  | ? | Somerset County Council | Somerset English Heritage Atlas Area |  | 2012-05-16 10:21:07
1159 | Dolomitic Conglomerate | 1158 | [NAME] |  | GREY | Mottled | Pale to dark grey limestone fragments, set in reddish to reddish-black matrix, pinkish/reddish tinge. | MERCIA MUDSTONE GROUP (MARGINAL FACIES) | TRIASSIC | BRECCIA | PEB | Usually fairly massive, but may exhibit coarse sets of truncated, bedding surfaces, occasional separated by very thin (up to 1cm) marl partings. | Clast-supported breccia or conglomerate composed of grey angular to subangular fragments of Carboniferous Limestone within a matrix of reddish to red-brown matrix of sandy marl or fine-grained limestone, overall effect is pinkish/pinkish-grey hue to rock. Limestone clasts usually 2-4cm diameter, but larger boulder-sized clasts occur. Characteristised by exhibiting secondary changes, in particular haematitization (which produces an intense red coloured 'earthy' iron-rich friable rock termed 'red ochre') and dolomitization (which typically turns the rock yellowish). | Becomes softer and friable, especially the cement matrix, upon weathering of haematitized and dolomitized forms of the rock. Black lichen growth typical of damp conditions. | Works readily into long pieces used as lintels, chimney pieces, gateposts and paving stones and rubblestone walling in numerous settlements on southern side of Mendip Hills , especially Cheddar, Draycott, [NAME], Wedmore, Easton and Wookey. | Eroded gorges and flanks of Mendip Hills area (Dolomitic Conglomerate), but mainly quarried (eg. as [NAME]) on southern flanks of Mendip Hills between Shipham and Wells, particularly around Draycott, [NAME], Easton, Wookey Station and East Horrington. |  | ? | Somerset County Council | Somerset English Heritage Atlas Area |  | 2012-05-16 10:21:07
1160 | Otter Sandstone | 1212 | Nynehead Sandstone | Calcite cement is locally abundant to the extent that the sandstone was formerly burnt for lime. | RED | Mottled | Red. | OTTER SANDSTONE FORMATION | TRIASSIC | SANDSTONE, MEDIUM-GRAINED | MEDIUM GRAINED | Bedding defined by grain size variation, cross bedding; mottled in shades of red, pale fawn and pale pink corresponding to nodular texture related to the proportion of calcite cement. | Predominant red colour; mottled in shades of red and fawn in some cases; predominantly medium-grained but some examples have a proportion of coarse very well rounded quartz grains (millet seed sand); others examples are poorly sorted with  layers and lenses of granule grade or scattered larger clasts up to small pebble grade; most lithic clasts are exotic but intraformational pebbles of darker red muddy sandstone and siltstone are characteristic and where present, distinguish the Otter Sandstone from sandstones of the underlying Exeter Group.  Distinguished from the Budleigh Salterton Pebble Beds Formation by the maximum size and proportion of exotic pebbles. |  | Best quality, most uniform stone is used for quoins and dressings; lower quality stone is used for the walls of buildings; the softer blocks of sandstone tend to have rounded edges and corners. | Vale of [NAME], mainly from [NAME] northwards, up to [NAME] and [NAME]. Also used eastwards from Watchet to [NAME], and in south western part of Vale around Wellington and Nynehead. |  | ? | Somerset County Council | Somerset English Heritage Atlas Area |  | 2012-05-16 10:21:07
1161 | Nynehead Sandstone | 1160 | Otter Sandstone | Calcite cement is locally abundant to the extent that the sandstone was formerly burnt for lime. | RED | Mottled | Red. | OTTER SANDSTONE FORMATION | TRIASSIC | SANDSTONE, MEDIUM-GRAINED | MEDIUM GRAINED | Bedding defined by grain size variation, cross bedding; mottled in shades of red, pale fawn and pale pink corresponding to nodular texture related to the proportion of calcite cement. | Predominant red colour; mottled in shades of red and fawn in some cases; predominantly medium-grained but some examples have a proportion of coarse very well rounded quartz grains (millet seed sand); others examples are poorly sorted with  layers and lenses of granule grade or scattered larger clasts up to small pebble grade; most lithic clasts are exotic but intraformational pebbles of darker red muddy sandstone and siltstone are characteristic and where present, distinguish the Otter Sandstone from sandstones of the underlying Exeter Group.  Distinguished from the Budleigh Salterton Pebble Beds Formation by the maximum size and proportion of exotic pebbles. |  | Best quality, most uniform stone is used for quoins and dressings; lower quality stone is used for the walls of buildings; the softer blocks of sandstone tend to have rounded edges and corners. | Vale of [NAME], mainly from [NAME] northwards, up to [NAME] and [NAME]. Also used eastwards from Watchet to [NAME], and in south western part of Vale around Wellington and Nynehead. |  | ? | Somerset County Council | Somerset English Heritage Atlas Area |  | 2012-05-16 10:21:07
1162 | [NAME] | 1160 | Otter Sandstone | Calcite cement is locally abundant to the extent that the sandstone was formerly burnt for lime. | RED | Mottled | Red. | OTTER SANDSTONE FORMATION | TRIASSIC | SANDSTONE, MEDIUM-GRAINED | MEDIUM GRAINED | Bedding defined by grain size variation, cross bedding; mottled in shades of red, pale fawn and pale pink corresponding to nodular texture related to the proportion of calcite cement. | Predominant red colour; mottled in shades of red and fawn in some cases; predominantly medium-grained but some examples have a proportion of coarse very well rounded quartz grains (millet seed sand); others examples are poorly sorted with  layers and lenses of granule grade or scattered larger clasts up to small pebble grade; most lithic clasts are exotic but intraformational pebbles of darker red muddy sandstone and siltstone are characteristic and where present, distinguish the Otter Sandstone from sandstones of the underlying Exeter Group.  Distinguished from the Budleigh Salterton Pebble Beds Formation by the maximum size and proportion of exotic pebbles. |  | Used extensively as a building stone, cut and dressed ashar in villages around the southwest and western margins of the Quantock Hills, especially [NAME]. | Local name applied to Otter Sandstones cropping out within the Bishops Lydeard area. |  | ? | Somerset County Council | Somerset English Heritage Atlas Area |  | 2012-05-16 10:21:07
1163 | [NAME] (Pebble) Beds | 1 | Budleigh Salterton Conglomerate | Exotic clast rock-types include vein quartz, pale and dark grey limestone some parts of which may be fossiliferous or oolitic, red and maroon sandstone or quartzite, black sandstone and hornfels, dark purple volcanic rock with zeolite-filled amygdales and black glassy quartzite; limestone pebbles tend to be well rounded | RED | Banded | Red. | BUDLEIGH SALTERTON PEBBLE BEDS FORMATION | TRIASSIC | CONGLOMERATE | PEB | Distribution of pebbles is irregular; in places they fill the whole volume of the building block (conglomerate and breccia), in places they form bands and lenses enclosed by red sandstone, in places they form individual isolated pebbles and cobbles within the sandstone. | Conglomerate, breccia and pebbly sandstone conposed of angular to well rounded clasts up to large cobbles in size, set in a coarse-grained red sandstone matrix with carbonate cement; distinguished from Otter Sandstone by larger size and greater proportion of exotic clasts. |  | Used for all parts and all kinds of building. | Vale of Taunton Deane. |  | ? | Somerset County Council | Somerset English Heritage Atlas Area |  | 2012-05-16 10:21:07
1164 | [NAME] | 1163 | [NAME] (Pebble) Beds | Exotic clast rock-types include vein quartz, pale and dark grey limestone some parts of which may be fossiliferous or oolitic, red and maroon sandstone or quartzite, black sandstone and hornfels, dark purple volcanic rock with zeolite-filled amygdales and black glassy quartzite; limestone pebbles tend to be well rounded | RED | Banded | Red. | BUDLEIGH SALTERTON PEBBLE BEDS FORMATION | TRIASSIC | CONGLOMERATE | PEB | Distribution of pebbles is irregular; in places they fill the whole volume of the building block (conglomerate and breccia), in places they form bands and lenses enclosed by red sandstone, in places they form individual isolated pebbles and cobbles within the sandstone. | Conglomerate, breccia and pebbly sandstone conposed of angular to well rounded clasts up to large cobbles in size, set in a coarse-grained red sandstone matrix with carbonate cement; distinguished from Otter Sandstone by larger size and greater proportion of exotic clasts. |  | Used for all parts and all kinds of building. | Vale of Taunton Deane. |  | ? | Somerset County Council | Somerset English Heritage Atlas Area |  | 2012-05-16 10:21:07
1165 | [NAME] | 1 | [NAME] | [NAME] give rise to distinctive topography of small, steep-sided knolls. A well defined ridge from Copperclose Wood to near Luccombe is formed by the 'Luccombe Boulder Bed', a particularly coarse comglomeratic unit with cobbles and boulders up to 50cm in diameter set in a fine-grained matrix | RED | Banded | Red-brown. | LUCCOMBE BRECCIA FORMATION | TRIASSIC | BRECCIA | PEB | Sandstone units and blocks exhibit fining-up and coarse-tail grading (decrease in clast size but matrix remains constant grain size); matrix grains often with frosted surface. | Reddish-brown well-cemented, sandy breccia with local interbeds of sandstones and pebbly sandstones. Clasts are generally medium to large (occasionally very large) pebble size and comprise platy, low-sphericity, dark grey or dark reddish-grey slates and shales, with some fine-grained sandstones, vein quartz, red-brown to pale creamy-yellow laminated siltstones. All the lithologies are often very calcareous, with abundant calcite-veining in places. [NAME] similar but usually clasts comprise Carbonifereous Limestone or purple Hangman Sandstone. | Some sandstone beds relatively poorly cemented and more friable. | Locally used for all parts and all kinds of building. | Porlock Basin; from near Horner in the west, through Luccombe to Huntscott and Tivington Knowle in the east, and extending south in a narrow fault-bounded strip to just west of [NAME]. |  | ? | Somerset County Council | Somerset English Heritage Atlas Area |  | 2012-05-16 10:21:07
1166 | [NAME] | 1 |  | The strongly cemented facies of the Vexford Breccias often form prominent scarps, especially where they overlie the relatively soft-weathering sandrock facies of the Wiveliscombe Sandstones. | PURPLE | Banded | Purple, red-brown, brown. | VEXFORD BRECCIAS | PERMIAN | BRECCIA | PEB | Sandstone units vary from being evenly-bedded to exhibiting current - and wedge-bedding features. Grain size of sandstones ranges from fine- to medium-grained. | Roughly-bedded purple and red-brown breccias containing (sub) angular clasts (up to 15mm) of sandstone, slate and quartz, with some rounded fragments of Carboniferous Limestone or 'Culm' chert. Matrix sandy, typically larger grains are well rounded, 'millet seed' in appearance. Interbedded reddish sandstone and pebbly sandstone beds vary from thin, impersistent layers, to thicker, sharply defined, extensive units, and mainly occur towards the top and bottom of the succession. North of [NAME] local comglomeratic units occur, containing numerous Carboniferous Limestones pebbles; these are similar to, but smaller than, the limestone pebbles present in the Budleigh Salterton Pebble Beds. | The softer sandstone beds are generally poorly cemented and more friable. | Used locally as a general building stone in farm walls and outbuildings, but former quarries are long disused, and near obliterated. Some sandstone facies were sufficiently calcareous to be locally burnt for lime. Towards the south of the outcrop, small pits opened for local use lie mainly near the base of the Formation and contain interbedded breccias and sandstones. | Vale of Taunton Deane, in an approximately north-south trending zone stretching from north of [NAME] (Vellow Wood Farm) through Westowe, [NAME] and West Leigh, south to Ford and Croford. |  | ? | Somerset County Council | Somerset English Heritage Atlas Area |  | 2012-05-16 10:21:07
1167 | Wiveliscombe Sandstone | 1 | Sandrock |  | RED | Banded | Red-brown, yellowish. | WIVELISCOMBE SANDSTONES | PERMIAN | SANDSTONE, MEDIUM-GRAINED | COARSE GRAINED | Generally well graded, thickly bedded to massive units, erosive bases of which may be marked by coarser (pebble) bands. | Thickly-bedded to massive, red to red-brown, occasionally [NAME] or yellowish calcareous sandstones. Subordinate bands of small pebbles also occur, along with a few breccia bands (present mainly towards the top of unit) Distinguished from similarly coloured [NAME] and [NAME] Pebble Beds by relative lack of large clasts, and by colour from the North Curry Sandstone. The Otter Sandstone is similar, but characteristically contains intraformational pebbles of darker red, muddy sandstone and siltstone (which are generally absent from the [NAME], although the latter may locally contain small fragments of Devonian Morte Slate). | Parts of the Wiveliscombe Sandstone sequence are in sandy, poorly-cemented facies which are prone to be relativey soft, friable and easily eroded. The better quality building stone is obtained from locally developed lithologies which have a calcareous cement, as these sandstones are harder and more competent. | Capable of being cut into ashlar or square-hewn stones, and used locally as building stone in [NAME] (eg. the brewery) and villages around Langley and [NAME]. Local calcareous and highly sandy, softer, facies variants (eg. at Coleford Water) also used for burning lime and as sand respectively. | Vale of Taunton Deane, in an approximately north-south trending zone stretching from [NAME] through Wiveliscombe and possibly to [NAME] (although some of the sandstones used in these 'southern' areas are somewhat more pebbly in character than typical Wivelsicombe Sandstone, and may represent other lithologies). |  | ? | Somerset County Council | Somerset English Heritage Atlas Area |  | 2012-05-16 10:21:07
1168 | Sandrock | 1 | Wiveliscombe Sandstone |  | RED | Banded | Red-brown, yellowish. | WIVELISCOMBE SANDSTONES | PERMIAN | SANDSTONE, MEDIUM-GRAINED | COARSE GRAINED | Generally well graded, thickly bedded to massive units, erosive bases of which may be marked by coarser (pebble) bands. | Thickly-bedded to massive, red to red-brown, occasionally [NAME] or yellowish calcareous sandstones. Subordinate bands of small pebbles also occur, along with a few breccia bands (present mainly towards the top of unit) Distinguished from similarly coloured [NAME] and [NAME] Pebble Beds by relative lack of large clasts, and by colour from the North Curry Sandstone. The Otter Sandstone is similar, but characteristically contains intraformational pebbles of darker red, muddy sandstone and siltstone (which are generally absent from the [NAME], although the latter may locally contain small fragments of Devonian Morte Slate). | Parts of the Wiveliscombe Sandstone sequence are in sandy, poorly-cemented facies which are prone to be relativey soft, friable and easily eroded. The better quality building stone is obtained from locally developed lithologies which have a calcareous cement, as these sandstones are harder and more competent. | Capable of being cut into ashlar or square-hewn stones, and used locally as building stone in [NAME] (eg. the brewery) and villages around Langley and [NAME]. Local calcareous and highly sandy, softer, facies variants (eg. at Coleford Water) also used for burning lime and as sand respectively. | Vale of Taunton Deane, in an approximately north-south trending zone stretching from [NAME] through Wiveliscombe and possibly to [NAME] (although some of the sandstones used in these 'southern' areas are somewhat more pebbly in character than typical Wivelsicombe Sandstone, and may represent other lithologies). |  | ? | Somerset County Council | Somerset English Heritage Atlas Area |  | 2012-05-16 10:21:07
1169 | [NAME] | 1 |  |  |  |  |  | SOUTHWEST ENGLAND MINOR INTRUSIVE SUITE |  | IGNEOUS, COARSE-GRAINED |  |  |  |  |  |  |  | ? | Somerset County Council | Somerset English Heritage Atlas Area |  | 2012-05-16 10:21:07
1170 | [NAME] | 1169 | [NAME] | Diorite occurs mainly in several quarries within the combe, but the type locality is on western side of combe within two quarry bays opened in two separate, closely adjacent dykes between 10-12m wide. | RED | Mottled | Red, red-black to black. | SOUTHWEST ENGLAND MINOR INTRUSIVE SUITE | PERMIAN | IGNEOUS, MEDIUM-GRAINED | MEDIUM GRAINED | Coarser-grained varieties of diorite occur in Charcoal-burners [NAME] within the combe; fine-grained varieties (chilled margins of the intrusion) occur in the quarry nearest the overflow car park for Hestercombe House and Gardens. | Medium-grained, reddish diorite composed of randomly-orientated pale oligoclase feldspar with radiating clusters of dark greenish chlorite crystals (replacing biotite) and opaque oxide (probably goethite). Accessory apatite is abundant; random patches of strained quartz are rare. | Hard and fairly resistant. | Ashlar and rubblestone locally, in particular in the west face of Hestercombe House itself and churches at Cheddon Fitzpaine and Taunton (St [NAME]). | Confined to small quarries in combe at Hestercombe, north of Taunton, and used locally. |  | ? | Somerset County Council | Somerset English Heritage Atlas Area |  | 2012-05-16 10:21:07
1171 | Pottle Stone | 1169 | [NAME] | Diorite occurs mainly in several quarries within the combe, but the type locality is on western side of combe within two quarry bays opened in two separate, closely adjacent dykes between 10-12m wide. | RED | Mottled | Red, red-black to black. | SOUTHWEST ENGLAND MINOR INTRUSIVE SUITE | PERMIAN | IGNEOUS, MEDIUM-GRAINED | MEDIUM GRAINED | Coarser-grained varieties of diorite occur in Charcoal-burners [NAME] within the combe; fine-grained varieties (chilled margins of the intrusion) occur in the quarry nearest the overflow car park for Hestercombe House and Gardens. | Medium-grained, reddish diorite composed of randomly-orientated pale oligoclase feldspar with radiating clusters of dark greenish chlorite crystals (replacing biotite) and opaque oxide (probably goethite). Accessory apatite is abundant; random patches of strained quartz are rare. | Hard and fairly resistant. | Ashlar and rubblestone locally, in particular in the west face of Hestercombe House itself and churches at Cheddon Fitzpaine and Taunton (St [NAME]). | A local name applied to [NAME] |  | ? | Somerset County Council | Somerset English Heritage Atlas Area |  | 2012-05-16 10:21:07
1172 | [NAME] | 1 | Pennant Measures |  | PALE-GREY | Uniform | Pale grey, pale greenish, to [NAME]. | PENNANT SANDSTONE FORMATION | CARBONIFEROUS | SANDSTONE, MEDIUM-GRAINED | COARSE GRAINED | Current-bedding structures typically present in sandstones. | A thick, (often highly contorted) sequence of grey to pinkish grey, feldspathic sandstones and sub-greywackes, with lesser sandy shales and mudstones. Associated with thin coal seams. |  | Used locally for rubblestone walling, mainly in and  around Colefield area, eastern Mendip. The largest former quarries for the Pennant Sandtsone were at Temple Cloud (11km north west of Coleford, and within Bath and North East Somerset UA). | A small outcrop area associated with the fringes of the former Mendip coalfield, and extending from just north of Ashwick through Holcombe and Coleford to Mells. |  | ? | Somerset County Council | Somerset English Heritage Atlas Area |  | 2012-05-16 10:21:07
1173 | [NAME] | 1 |  | Some beds tabular and blocky, and can be relatively easily dressed for ashlar. The very resistant chert bands are typically very conspicuous at weathered outcrops, and protrude like 'ribs'. | GREY | Uniform | Various shades of pale to dark grey, or almost blackish, [NAME] to near whitish; sometimes with dark oxide or yellowish ferruginous staining. | PEMBROKE LIMESTONE GROUP | CARBONIFEROUS | LIMESTONE | FINE GRAINED | Variable depending on the facies, but includes hummocky and cross-stratification; finer units are often laminated. | A complex, varied group of different limestone facies are included within the term 'Carboniferous Limestone' - and the various lithologies have been given different stratigraphical names along the outcrop. A summary of the main local types is:           v)  Hotwells Limestone - massive, grey, crinoidal and oolitic, bioclastic fine-grained limestones;                                                                                       iv)  [NAME] - includes dark grey to black, glanular limestones (eg. [NAME]); fine- to very fine-grained limestones ('chinastone limestones') with calcareous mudstones, white oolites ([NAME]) and dark, splintery limestones;                                                                                     iii)  [NAME] - a pale-grey, coarse crinoidal facies variant of the Burrington Oolite;                                                                                                          ii)  [NAME], light grey oolitic and oolitic crinoidal limestones, often with well-marked dolomitic bands;                                                           i)  Black Rock limestone - dark gery to black, fine-grained limestones with abundant crinoidal debris, bedding varies from thin to massive, shaly partings occur in the lower and middle parts of the sequence, along with two characteristic cherty horizons.                                                                                   Many of the limestones are highly fossiliferous, especially in brachiopod shells and corals (which can also be used to help identify the different lithologies). | Typical limestone - with dissolution features. Harder varieties include the recrystallised, massive lithologies, and particularly the siliceous, cherty bands. | Makes a durable building stone, the low porosity making it suitable for external buildings, as has low susceptibility to frost damage. One of the most extensively quarried stones in Somerset, and widely used throughout the Mendip region (on both northern and southern flanks of the [NAME], but especially at Axbridge, Cheddar, Wookey, Wells) for well dressed ashlar. Also provides a characteristic dry walling stone on Mendip plateau (eg. Priddy area). Limestones from Cannington Park have been used as a local building stone and previously burnt for lime, but in common with many of the former stone quarries, they are now worked substantially for crushed rock / concrete aggregate and roadstone. Although there are large-scale quarries operating within the Mendip region, this is mainly for aggregate, and stone dressed for building purposes is not readily obtainable. | A large outcrop area trending west-north-west to east-south-east right across the Mendip Hill ridge, extending from Brean Down south and eastwards to encompass most of the Mendip Hill ridge encompassed between Axbridge, Cheddar, Draycott, Wookey, Priddy and Wells eastwards to [NAME] on the southern Mendip flank; and the limestone slopes above [NAME], [NAME], [NAME] and Chewton Mendip on the northern Mendip flank. The outcrop then extends further eastwards (East Mendips) towards Frome encompassing smaller exposures (mainly inliers) around Oakhill and [NAME], and then a continuous belt with extensive quarries around Merehead, Cloford, Whatley, Holwell, Mells and [NAME]. A small inlier of Carboniferous limestone also occurs at Cannington (Cannington Park), northwest of [NAME]. |  | ? | Somerset County Council | Somerset English Heritage Atlas Area |  | 2012-05-16 10:21:07
1174 | Hotwells Limestone | 1173 | [NAME] | Some beds tabular and blocky, and can be relatively easily dressed for ashlar. The very resistant chert bands are typically very conspicuous at weathered outcrops, and protrude like 'ribs'. | GREY | Uniform | Grey to blackish | OXWICH HEAD [NAME] | CARBONIFEROUS | LIMESTONE | FINE GRAINED | Variable depending on the facies, but includes hummocky and cross-stratification; finer units are often laminated. | Fossiliferous, massive, [NAME] and oolitic bioclastic limestones. In the Cheddar - Westbury-Sub-Mendip area also contains flaggy, black splintery limestones with chert nodules and seams. The northern outcrops include pseudobreccias, cherty and porcellanous dolomitic limestones with some thin purplish slate and quartzitic sandstone interbeds. | Typical limestone - with dissolution features. Harder varieties include the recrystallised, massive lithologies, and particularly the siliceous, cherty bands. | Used locally as a building stone, along the outcrop area | Crops out along the southern flank on the Mendip Hills between Cheddar and Westbury-Sub-Mendip, with scattered outcrops around [NAME] and north of Oakhill, and then extending eastwards to Mells. Also occurs in  a narrow band skirting the northern edge of the Mendips south of [NAME] and [NAME] |  | ? | Somerset County Council | Somerset English Heritage Atlas Area |  | 2012-05-16 10:21:07
1175 | [NAME] | 1173 | [NAME] |  | GREY | Uniform | Grey to dark grey, or   blackish | CLIFTON DOWN LIMESTONE FORMATION | CARBONIFEROUS | LIMESTONE | FINE GRAINED | Variable depending on the facies, but includes hummocky and cross-stratification; finer units are often laminated. | Over most of the outcrop area three main lithologies occur: dark grey to black calcite-mudstones ('chinastone limestones'); grey to black fine-grained limestones, and alterations of caclite-limestones with white oolite and dark splintery limestones. The formation is exceptionally thick and divided into two distinct divisions - the Cheddar Limestone and [NAME]. | Typical limestone - with dissolution features. | Used locally as a building stone, along the outcrop area | Crops out along the southern flanks of the Mendip Hills from [NAME] to east of Wells, then from Emborough and [NAME] eastwards to Mells. The formation also occurs on the southern flanks of the Beacon Hill pericline, extending in a NE-SW outcrop pattern between East Cranmore and Nunney. On the northern flanks of the Mendips extends from Sandford, through Burrington Combe to south of [NAME] |  | ? | Somerset County Council | Somerset English Heritage Atlas Area |  | 2012-05-16 10:21:07
1176 | [NAME] | 1173 | [NAME] |  | GREY | Uniform | Usually pale grey, with some dark grey or blackish lithologies | CHEDDAR OOLITE MEMBER | CARBONIFEROUS | LIMESTONE | FINE GRAINED | Oolites typically current-bedded | Lower part mainly of pale [NAME], passing up into coarser oolites, commonly porcellanous, with interbeds of grey and black calcite-mudstones and splintery limestones | Typical limestone - with dissolution features. | Used locally as a building stone, along the outcrop area, especially in and around Cheddar | Mainly Cheddar Gorge area, but extends from north-west of Cheddar to the Priddy Fault, approximately 6km to the south east |  | ? | Somerset County Council | Somerset English Heritage Atlas Area |  | 2012-05-16 10:21:07
1177 | [NAME] | 1173 | [NAME] |  | GREY | Uniform | Dark grey to black | CHEDDAR LIMESTONE MEMBER | CARBONIFEROUS | LIMESTONE | FINE GRAINED | Variable depending on the facies, but includes well bedded and current-bedded units. | Grey, dark grey to black, fine grained splintery limestones, in places granular and crinoidal, occasionally oolitic; bands of black calcite-mudstone in top half. | Typical limestone - with dissolution features. | Used locally as a building stone, along the outcrop area, especially in and around Cheddar | Mainly Cheddar Gorge area, but extends from north-west of Cheddar to the Priddy Fault, approximately 6km to the south east |  | ? | Somerset County Council | Somerset English Heritage Atlas Area |  | 2012-05-16 10:21:07
1178 | [NAME] | 1173 | [NAME] |  | GREY | Uniform | Normally light grey | BURRINGTON OOLITE SUBGROUP | CARBONIFEROUS | LIMESTONE | FINE GRAINED | Often massively bedded, and exhibiting current bedding | Light grey, massive oolitic and crinoidal limestones, the upper parts with occasional pale grey calcite-mudstone bands, or oolitic limestone pebbles or calcite-mudstone pellets. A well marked band of dolomite occurs towards the base of the formation in the Wells area. Within the eastern Mendips, the Burrington Oolite passes laterally into the Valls Limestone Formation. | Typical limestone - with dissolution features. | Used locally as a building stone, along the outcrop area. | A relatively large outcrop pattern amongst the Carboniferous Limestones, extending along both northern and southern flanks of the Mendip Hills (wide surface outcrop above Axbridge-Cheddar and [NAME]), then extending eastwards around Priddy with scattered outcrops east of Wells, forming a thin linear outcrop around [NAME], via [NAME] and [NAME] upon Mendip towards Mells |  | ? | Somerset County Council | Somerset English Heritage Atlas Area |  | 2012-05-16 10:21:07
1179 | [NAME] | 1173 | [NAME] |  | GREY | Uniform | Pale grey | [NAME] | CARBONIFEROUS | LIMESTONE | COARSE GRAINED |  | Pale grey, coarse-grained crinoidal limestones | Typical limestone - with dissolution features. | Used locally as a building stone, along the outcrop area. | Extends from Green Ore area and [NAME] eastwards towards Mells and [NAME]. South of the Beacon Hill pericline the [NAME] outcrop trends NW-SE through the extensive quarries west of Nunney. The formation reaches its maximum thickness in the Binegar-Oakhill area. |  | ? | Somerset County Council | Somerset English Heritage Atlas Area |  | 2012-05-16 10:21:07
1180 | Black Rock Limestone | 1173 | [NAME] |  | GREY | Uniform | Dark grey to black | BLACK ROCK LIMESTONE SUBGROUP | CARBONIFEROUS | LIMESTONE | FINE GRAINED | Variable depending on the facies, includes massive and thin-bedded types | Predominantly dark grey to black, fine-grained limestones with abundant crinoidal debris. Coarser-grained crinoidal limestones occur in the lower third. At least two distinct chert horizons occur; the upper parts of the formation are also commonly dolomitized. In the Wells and [NAME] areas these dolomitized limestones are very hard and tend to stand out as strong features. This shaly partings are common in the lower and middle parts of the succession. The most fossiliferous Subgroup of all the Carboniferous Limestones within the Mendip area | Typical limestone - with dissolution features. Harder varieties include the siliceous, cherty horizons and dolomitized bands | Used locally as a building stone, along the outcrop area. Also utilised for dry stone walling on the Mendip plateau areas, especially in the Priddy area. | Extensive outcrop pattern through the Mendip Hills area, usually forming the upper slope and adjoining lower plateau areas on both nortern and southern flanks of the Mendips. The succession is well known in Burrington [NAME], and outcrops widely in the Charterhouse, Priddy area, and north of Wookey Hole and [NAME]. In the eastern Mendips the Subgroup occurs along both flanks of the Beacon Hill Pericline, and is extensively quarried at Torr Works and [NAME]. North of Frome, it also forms one of the most easterly outcrops of Carboniferous Limestone in Somerset. |  | ? | Somerset County Council | Somerset English Heritage Atlas Area |  | 2012-05-16 10:21:07
1181 | [NAME] | 1 | Upper Westleigh Limestones |  | DARK-GREY | Banded | Various shades of pale to dark grey, pale brown. | WESTLEIGH LIMESTONE FORMATION | CARBONIFEROUS | LIMESTONE | FINE GRAINED | Occasional hummocky cross-stratification within sets of limestone beds at outcrop. | Grey to dark grey, well-bedded, fine-grained limestones with subordinate pale grey and dark brown, calcareous sandstones, and black, smooth, very hard partly silicified cherty limestones. Shaly mudstone interbeds are sparsely developed.  The presence of bands or elongated lenses of black or in some cases brown chert and delicately preseved banding and lamination is characteristic. | Siliceous 'cherty' limestones very hard. Often seen in buildings as dark horizontal bands within 'normal' paler greyish limestone blocks. | Locally used for ashlar blocks and rubblestone walling within Wellington to Westleigh area, and more widely within the western part of the Vale of Taunton Deane (including Taunton itself) for all kinds of building, but especially public works (eg. [NAME] and main [NAME]) of the nineteenth and early twentieth centuries. | A very small outcrop occurs in the far south west of Somerset, at Wiseburrow Farm, 5.5km west-south-west of Wellington. The main quarrying area for the stone used within Somerset was at Westleigh and [NAME] (just within the [NAME] border). |  | ? | Somerset County Council | Somerset English Heritage Atlas Area |  | 2012-05-16 10:21:07
1182 | Doddiscombe Beds | 1 |  |  | BLACK | Uniform | Dark greyish. | DODDISCOMBE FORMATION | CARBONIFEROUS | SILTSTONE | VERY FINE GRAINED | Fine lamination. | Black to dark grey, finely laminated slates and hard, thin, siliceous cherty mudstones, with sparse very thin siltstone beds. |  | Used locally for slates and walling (eg. car park at The Globe, Apperly). | A very small outcrop occurs in the far south west of Somerset, around Apperly and Tracebridge (abandoned slate quarries), approximately 7 km west-north-west of Wellington. The main outcrop then stretches westwards into [NAME]. |  | ? | Somerset County Council | Somerset English Heritage Atlas Area |  | 2012-05-16 10:21:07
1183 | Old Red Sandstone | 1 |  | Sandstones often massive, blocky. Rocks usually more calcareous in upper parts (upper 30m) of sequence. | RED | Uniform | Pale purple or pale red brown, often weathering to pale grey or [NAME]. | PORTISHEAD [NAME] | DEVONIAN | SANDSTONE, FINE-GRAINED | FINE GRAINED | Sandstones usually well-bedded; where present lamination and cross-bedding usually marked by darker purple laminae in red-brown sandstones. | Dominantly dull reddish feldspathic and quartzitic sandstones, interbedded with sandy green, red and purplish shales and fine-grained micaceous sandstones. Pebbly sandstones and and sandy quartz-conglomerates occur in the lower part. In the upper part of the sandstones are often greyish in colour; this give way in other (lower) parts of the succession to the typical red and purple colouration due mainly to the presence of haematite. |  | Mainly used locally for dry stone (field) walls. | Outcrop occurs in cores of Mendip Hills periclines stretching east to west from Black Down (north of Cheddar) through North Hill - Eaker Hill, Priors Hill - Pen Hill to Beacon Hill (north of [NAME]). |  | ? | Somerset County Council | Somerset English Heritage Atlas Area |  | 2012-05-16 10:21:07
1184 | Portishead Beds | 1183 | Old Red Sandstone | Sandstones often massive, blocky. Rocks usually more calcareous in upper parts (upper 30m) of sequence. | RED | Uniform | Pale purple or pale red brown, often weathering to pale grey or [NAME]. | PORTISHEAD [NAME] | DEVONIAN | SANDSTONE, FINE-GRAINED | FINE GRAINED | Sandstones usually well-bedded; where present lamination and cross-bedding usually marked by darker purple laminae in red-brown sandstones. | Dominantly dull reddish feldspathic and quartzitic sandstones, interbedded with sandy green, red and purplish shales and fine-grained micaceous sandstones. Pebbly sandstones and and sandy quartz-conglomerates occur in the lower part. In the upper part of the sandstones are often greyish in colour; this give way in other (lower) parts of the succession to the typical red and purple colouration due mainly to the presence of haematite. |  | Mainly used locally for dry stone (field) walls. | Outcrop occurs in cores of Mendip Hills periclines stretching east to west from Black Down (north of Cheddar) through North Hill - Eaker Hill, Priors Hill - Pen Hill to Beacon Hill (north of [NAME]). |  | ? | Somerset County Council | Somerset English Heritage Atlas Area |  | 2012-05-16 10:21:07
1185 | Pickwell [NAME] | 1183 | Pickwell Down Beds |  | PURPLE | Uniform | Pale to dark purple, reddish brown, silvery to greenish grey. | PICKWELL DOWN SANDSTONES FORMATION | DEVONIAN | SANDSTONE, FINE-GRAINED | FINE GRAINED | Sandstones commonly exhibit current bedding structures. | Purple, reddish-brown and greenish grey fine to medium grained sandstones, often thickly-bedded to massive; in places the sandstones are micaceous or feldspathic. Subordinate red and grey shales are most plentiful towards the base and top of the Formation. The base is marked by a sporadic, but persistent band of massive, strong tuff. The red or purple body colour of many examples of the stone distinguishes the Pickwell [NAME] from those of the Hangman Sandstones and [NAME]. | Localised veinlets of manganese oxide may occur within the sandstones. | This Formation has been extensively pitted for use as a local building stone, including colourful ragstone walling and some ashlar (eg. Dulverton). The walls and dam of Wimbleball Reservoir walls are also composed of Pickwell Down Sandstone. The basal tuff layer has been used as a walling stone. Thickly-bedded sandstones were also quarried at the eastern edge of the outcrop at Wiveliscombe and used as local building stone (and roadstone). | Extends in a linear tract across South Exmoor and the southern [NAME] eastwards from Long Holcombe through Withypool Common to Exton, and also via South Radworthy through Twitchen, Dulverton, Haddon Hill and [NAME] to Wiveliscombe. |  | ? | Somerset County Council | Somerset English Heritage Atlas Area |  | 2012-05-16 10:21:07
1186 | Morte Slates | 1 | Sticklepath Slates, [NAME] | In outcrop on hill slopes, steeply inclined slates often show terminal curvature ('angular kink') due to downhill movement, and the upper beds tend to have partially disintegrated or be highly fragmented. | GREY | Uniform | Pale grey to silvery grey and greenish grey, purple stained, often with patchy red brownish weathered surface at outcrop. | MORTE SLATES FORMATION | DEVONIAN | SLATE | VERY FINE GRAINED | Slates typically cleaved, siltstones may exhibit cross-lamination and convolute-lamination. | Predominantly smooth argillaceous, lustrous, cleaved, silvery-grey and greenish grey slates and silty slates on south Exmoor and the Brendon Hills. The south Quantock Hills facies is similar but with purple-stained slates, silty slates and scattered fine-grained sandstones (especially in the middle of the Formation) in ill-defined to more massive, block distinct beds. Quartz veining common. |  | Numerous local, small-scale quarries exist along the whole outcrop where poor-quality building stone was dug on site to avoid transport costs. Where silty interbeds and sandstones have prevented the development of closely spaced cleavage planes, the rock has provided rough building and walling stone of variable (often low grade) quality. Generally sandstones are more colourful than the slates and exhibit smooth, flat surfaces. The best quality roofing slates were obtained from Oakhampton quarries, which produced a wide range of slates, slabs, sills and flooring. | Extensive outcrop tract across south Exmoor and the Brendon Hills stretching in the west through East Down, Arlington, Fulloford, Withypool, [NAME], [NAME] and eastwards to Oakhampton, [NAME] and [NAME]. Also comprises the northern southern [NAME], extending from Cothelstone Hill, Broomfield, [NAME], Hestercombe, Thurloxton and [NAME] (Kings Cliff). A small inlier is also present at Charlinch, west of Bridgwater. |  | ? | Somerset County Council | Somerset English Heritage Atlas Area |  | 2012-05-16 10:21:07
1187 | Sticklepath Slate | 1186 | Morte Slates | In outcrop on hill slopes, steeply inclined slates often show terminal curvature ('angular kink') due to downhill movement, and the upper beds tend to have partially disintegrated or be highly fragmented. | GREY | Uniform | Pale grey to silvery grey and greenish grey, purple stained, often with patchy red brownish weathered surface at outcrop. | STICKLEPATH SLATE | DEVONIAN | SLATE | VERY FINE GRAINED | Slates typically cleaved, siltstones may exhibit cross-lamination and convolute-lamination. | Predominantly smooth argillaceous, lustrous, cleaved, silvery-grey and greenish grey slates and silty slates on south Exmoor and the Brendon Hills. The south Quantock Hills facies is similar but with purple-stained slates, silty slates and scattered fine-grained sandstones (especially in the middle of the Formation) in ill-defined to more massive, block distinct beds. Quartz veining common. |  | Numerous local, small-scale quarries exist along the whole outcrop where poor-quality building stone was dug on site to avoid transport costs. Where silty interbeds and sandstones have prevented the development of closely spaced cleavage planes, the rock has provided rough building and walling stone of variable (often low grade) quality. Generally sandstones are more colourful than the slates and exhibit smooth, flat surfaces. The best quality roofing slates were obtained from Oakhampton quarries, which produced a wide range of slates, slabs, sills and flooring. | Extensive outcrop tract across south Exmoor and the Brendon Hills stretching in the west through East Down, Arlington, Fulloford, Withypool, [NAME], [NAME] and eastwards to Oakhampton, [NAME] and [NAME]. Also comprises the northern southern [NAME], extending from Cothelstone Hill, Broomfield, [NAME], Hestercombe, Thurloxton and [NAME] (Kings Cliff). A small inlier is also present at Charlinch, west of Bridgwater. |  | ? | Somerset County Council | Somerset English Heritage Atlas Area |  | 2012-05-16 10:21:07
1188 | [NAME] | 1186 | Morte Slates | In outcrop on hill slopes, steeply inclined slates often show terminal curvature ('angular kink') due to downhill movement, and the upper beds tend to have partially disintegrated or be highly fragmented. | GREY | Uniform | Pale grey to silvery grey and greenish grey, purple stained, often with patchy red brownish weathered surface at outcrop. | BRENDON HILL BEDS | DEVONIAN | SLATE | VERY FINE GRAINED | Slates typically cleaved, siltstones may exhibit cross-lamination and convolute-lamination. | Predominantly smooth argillaceous, lustrous, cleaved, silvery-grey and greenish grey slates and silty slates on south Exmoor and the Brendon Hills. The south Quantock Hills facies is similar but with purple-stained slates, silty slates and scattered fine-grained sandstones (especially in the middle of the Formation) in ill-defined to more massive, block distinct beds. Quartz veining common. |  | Numerous local, small-scale quarries exist along the whole outcrop where poor-quality building stone was dug on site to avoid transport costs. Where silty interbeds and sandstones have prevented the development of closely spaced cleavage planes, the rock has provided rough building and walling stone of variable (often low grade) quality. Generally sandstones are more colourful than the slates and exhibit smooth, flat surfaces. The best quality roofing slates were obtained from Oakhampton quarries, which produced a wide range of slates, slabs, sills and flooring. | Extensive outcrop tract across south Exmoor and the Brendon Hills stretching in the west through East Down, Arlington, Fulloford, Withypool, [NAME], [NAME] and eastwards to Oakhampton, [NAME] and [NAME]. Also comprises the northern southern [NAME], extending from Cothelstone Hill, Broomfield, [NAME], Hestercombe, Thurloxton and [NAME] (Kings Cliff). A small inlier is also present at Charlinch, west of Bridgwater. |  | ? | Somerset County Council | Somerset English Heritage Atlas Area |  | 2012-05-16 10:21:07
1189 | [NAME] | 1 | Morte Slates |  | GREY | Uniform | Pale grey, silvery grey,  purple | MORTE SLATES FORMATION | DEVONIAN | SLATE | VERY FINE GRAINED | Slates typically well cleaved, siltstones may exhibit cross-lamination and convolute-lamination. | Predominantly smooth argillaceous, lustrous, cleaved, silvery-grey and purple slates |  | The best quality roofing slates were obtained from Oakhampton quarries, which produced a wide range of slates, slabs, sills and flooring. | Local name applied to relatively homogeneous slate facies cropping out between [NAME] and [NAME], in and around Oakhampton, where these slates have been extensively quarried |  | ? | Somerset County Council | Somerset English Heritage Atlas Area |  | 2012-05-16 10:21:07
1190 | Ilfracombe Slates | 1 | [NAME] |  | GREY | Mottled | Pale to dark grey, [NAME], [NAME], reddish-brown to purple greenish; often mottled, locally variegated. | ILFRACOMBE SLATES FORMATION | DEVONIAN | SLATE | VERY FINE GRAINED | Beds often highly deformed (in comparison with underlying [NAME]). Siltstones and fine-grained sandstones (especially) locally exhibit cross-bedding. | Grey and brown or silvery slates (colour often variable), argillaceous in part, with subordinate interbedded cleaved siltstones and thin, well-developed fine-grained, quartzitic sandstones. The detailed stratigraphy is complex, and based on subtle lithological distinctions - this has led to an array of unit names being adopted in the west and east of the outcrop. Parts of the sequence contain limestones (fossiliferous in part, and providing useful 'marker horizons') and a volcanic tuff ([NAME]); these are covered separately in the following sections. Distinguished from Morte Slates by being more pelitic (richer in clay), poorer in silt, and [NAME] rather than greenish. | At outcrop, rock surfaces often exhibit ferruginous, iron-staining. | Hard sandstones were dug and used locally for buildings, and occasionally for walling (also roads), all along the outcrop length from Kentisbury to Holford wherever suitable stones were available. Treborough produced slates of sufficient quality for roofing roofing along with slabs for doorsteps, cisterns, tombstones and flooring. | Extensive outcrop zone across central Exmoor and central [NAME], stretching in the west from [NAME] through Exford, Wheddon Cross, Luxborough, Treborough, and [NAME] to  Nettlecombe. Also comprises the central [NAME], extending from West Bagborough to Enmore, then northwards through Hawkridge, Plainsfield, [NAME] to Holford. |  | ? | Somerset County Council | Somerset English Heritage Atlas Area |  | 2012-05-16 10:21:07
1191 | Wild Pear Slates | 1190 | Ilfracombe Slates |  | GREY | Mottled | Pale to dark grey, silvery grey | WILD PEAR SLATES MEMBER | DEVONIAN | SLATE | VERY FINE GRAINED | Siltstones and fine-grained sandstones (especially) locally exhibit cross-bedding. | Strongly overfolded and cleaved silvery grey slates with subordinate thin sandstones, siltstones and limestones, generally ferruginous with iron-stained mottling | At outcrop, rock surfaces often exhibit ferruginous, iron-staining. | Harder sandy bands were dug and used very locally for walling along the outcrop length wherever suitable stones were available. | Outcrop in Exmoor National Park (and [NAME]) in a south-easterly trending band extending from Wild Pear Beach ([NAME]) to Voley, Parracombe and to near Holworthy, where they are faulted out |  | ? | Somerset County Council | Somerset English Heritage Atlas Area |  | 2012-05-16 10:21:07
1192 | [NAME] | 1190 | Ilfracombe Slates |  | GREY | Mottled | Pale to dark grey, greenish | LESTER SLATES AND SANDSTONES MEMBER | DEVONIAN | SLATE | FINE GRAINED | Siltstones and fine-grained sandstones (especially) locally exhibit cross-bedding. | Greyish slates, sandstones, gritty sandstones and siltstones, with bioturbated mudstones (often with abundant Chondrites worm burrows) and thin, solution-hollowed limestones at the top. | The strata characteristically form strongly rounded, dip-and-scarp features | Harder sandy bands were dug and used very locally for walling along the outcrop length wherever suitable stones were available. | Outcrop in Exmoor National Park (and [NAME]) in a south-easterly trending band extending from Lester Point ([NAME]) to Verwill, Hollacombe and Rowley Cross. The beds are fault terminated at Highley |  | ? | Somerset County Council | Somerset English Heritage Atlas Area |  | 2012-05-16 10:21:07
1193 | [NAME] | 1190 | Ilfracombe Slates |  | GREY | Mottled | Pale to dark grey, silvery grey | [NAME] MEMBER | DEVONIAN | SLATE | VERY FINE GRAINED | Siltstones and fine-grained sandstones (especially) locally exhibit cross-bedding. | Silvery grey, calcareous, silty slates interbedded with grey, fine-grained thin sandstones and three distinctive limestone beds. Slates often well cleaved. | Inland the strata give rise to a sharp angular landscape with abundant craggy scarps and pinnacles | Harder sandy bands were dug and used very locally for walling along the outcrop length wherever suitable stones were available. | Outcrop in Exmoor National Park (and [NAME]) in a south-easterly trending band extending from the coast between Ilfracombe and [NAME], via [NAME], east of Blackmoor Gate, and via The Chains along the upper stretches of the Exe valley |  | ? | Somerset County Council | Somerset English Heritage Atlas Area |  | 2012-05-16 10:21:07
1194 | Kentisbury Slates | 1190 | Ilfracombe Slates |  | GREY | Mottled | Pale to dark grey, [NAME], [NAME], reddish-brown to purple greenish; often mottled, locally variegated. | KENTISBURY SLATES MEMBER | DEVONIAN | SLATE | FINE GRAINED | Siltstones and fine-grained sandstones (especially) locally exhibit cross-bedding. Many of the slate units contain Chondrites-type burrows, similar to the Lester Slates and Sandstones | Alternating groups of slate-rich and sandstone-rich units. The slate-rich units consist mainly of dark grey and silvery grey slates with lenticles of fine sand, sandstone beds and limestones; the sandstone-rich units contain massive, grey or pinkish grey, coarser grained and fine grained sandstones, locally cross-bedded. |  | Hard sandstones were dug and used locally for buildings, and occasionally for walling (also roads), all along the outcrop length wherever suitable stones were available. | Outcrop in Exmoor National Park (and [NAME]) in a south-easterly trending band extending from the coast at Ilfracombe via [NAME] to [NAME] and then eastwards towards [NAME] (where the named lithological divisions of the Ilfracombe Slates Formation change to those employed for the Brendon Hills and [NAME] areas) |  | ? | Somerset County Council | Somerset English Heritage Atlas Area |  | 2012-05-16 10:21:07
1195 | Treborough Slates | 1190 | Ilfracombe Slates |  | GREY | Mottled | [NAME], blue grey | CUTCOMBE SLATES MEMBER | DEVONIAN | SLATE |  |  | Blue grey, relatively homogeneous, well cleaved slates, with occasional interbedded siltstones. | Rock surfaces often exhibit ferruginous, iron-staining. | Treborough produced slates of sufficient quality for roofing roofing along with slabs for doorsteps, cisterns, tombstones and flooring. | Local name applied to a relatively homogeneous slate facies of the Ilfracombe Slates which crops out at Treborough (within Exmoor National Park, approximately 7km south of Dunster), where these slates have historically been extensively quarried |  | A.H.King | Somerset County Council | Somerset English Heritage Atlas Area | Edmonds, E.A., Whittaker, A. & Williams, B.J, 1985: Geology of the country around Ilfracombe and Barnstaple. Memoir of the British Geological Survey (Sheets 277 and 293), HMSO. 98pp. | 2012-05-16 10:21:07
1196 | [NAME] | 1190 | Ilfracombe Slates |  | GREY | Mottled | Grey, brown | AVILL SLATES AND SANDSTONES MEMBER | DEVONIAN | SLATE | VERY FINE GRAINED | Beds often highly deformed (in comparison with underlying [NAME]). Siltstones and fine-grained sandstones (especially) locally exhibit cross-bedding. | Grey and brown slates (colour often variable), with siltstones and well-developed sandstones | At outcrop, rock surfaces often exhibit ferruginous, iron-staining. | Hard sandstones were dug and used locally for buildings and walling all along the outcrop length wherever suitable stones were available. | Across Exmoor and the Brendon Hills, occurs in an E-W trending band from north of Exford, south of Dunkery Hill and via Luxborough to Withycombe. Within the Quantock Hills, the Avill Slates and Sandstones extend in a arcuate pattern around the southern edge of the Hangman Sandstone outcrop from West Bagborough, through Plainsfield, [NAME] and Cockercombe, towards Holford |  | ? | Somerset County Council | Somerset English Heritage Atlas Area |  | 2012-05-16 10:21:07
1197 | [NAME] | 1190 | Ilfracombe Slates |  | GREY | Mottled | Grey, brown | CUTCOMBE SLATES MEMBER | DEVONIAN | SLATE | VERY FINE GRAINED | Beds often highly deformed (in comparison with underlying [NAME]). Siltstones and fine-grained sandstones (especially) locally exhibit cross-bedding. | Grey and brown slates (colour often variable), with siltstones, and traces of thin sandstones. A discontinuous limestone (the Rodhuish Limestone) occurs about mid-way up the succession in some places | At outcrop, rock surfaces often exhibit ferruginous, iron-staining. | Hard sandstones were dug and used locally for buildings and walling all along the outcrop length wherever suitable stones were available. | Across Exmoor and the Brendon Hills, occurs in an E-W trending band from Exford, through [NAME] to [NAME] and Rodhuish. Within the Quantock Hills, the Cutcombe Slates extend in an arcuate band through East Bagborough and Lower Merridge towards [NAME] |  | ? | Somerset County Council | Somerset English Heritage Atlas Area |  | 2012-05-16 10:21:07
1198 | Leighland Slates | 1190 | Ilfracombe Slates |  | GREY | Mottled | Pale to dark grey, [NAME], [NAME], reddish-brown to purple greenish; often mottled, locally variegated. | LEIGHLAND SLATES MEMBER | DEVONIAN | SLATE | VERY FINE GRAINED | Beds often highly deformed (in comparison with underlying [NAME]). Siltstones and fine-grained sandstones (especially) locally exhibit cross-bedding. | Grey and brown slates (colour often variable), siltstones, and sandstones, with limestones at four horizons (the Roadwater Limestone provides a useful marker horizon at the base of the Member) | At outcrop, rock surfaces often exhibit ferruginous, iron-staining. | Hard sandstones were dug and used locally for buildings and walling all along the outcrop length wherever suitable stones were available. | Across Exmoor and the Brendon Hills, occurs in an E-W trending band from south of Exford, south of Wheddon Cross, via Treborough, Nettle combe and Monksilver to east of Rodhuish. Within the Quantock Hills, the Leighland Slates crop out along the south of Cothelstone Hill and [NAME], with isolated inliers at [NAME] and [NAME] |  | ? | Somerset County Council | Somerset English Heritage Atlas Area |  | 2012-05-16 10:21:07
1199 | [NAME] | 1 |  |  | PALE-GREY | Uniform | Pale grey to pinkish grey, often surface stained darker green, vivid red, or blackish by lichen growth. | ILFRACOMBE SLATES FORMATION | DEVONIAN | LIMESTONE | FINE GRAINED | Usually massive, some bioclastic, shelly lenses. Often cleaved in outcrop, with calcite veining. | Grey or pinkish grey, massive, locally recrystallised, bioclastic limestones, sometimes crinoidal, with interbeds of calcareous siltstones and fine sandstones. In the field, the absence/presence of siltstones or sandstone units can be useful in distinguishing between the different named limestone units, although lithologically they are all fairly similar. Assigning individual limestone blocks or hand specimens to particular units is often very difficult, occasionally fossils (especially corals or stromatoporoids) can assist. | Typical limestone - with dissolution features. Harder varieties tend to be recrystallised, massive lithologies. | Extensively worked in small quarries, including for production of lime, but used locally for rough walling along the outcrop strip. | Linear outcrop pattern, small quarries and local use of stone in approximately narrow zones across Exmoor and [NAME] (through Exford, Wheddon Cross, Luxborough, Treborough, [NAME], Rodhuish and [NAME]) and also the central [NAME] (from Cothelstone, Merridge, Hawkridge and Adscombe to [NAME]). |  | ? | Somerset County Council | Somerset English Heritage Atlas Area |  | 2012-05-16 10:21:07
1200 | Leigh Barton Limestone | 1199 | [NAME] |  | PALE-GREY | Uniform | Grey, pinkish-grey | LEIGH BARTON LIMESTONE | DEVONIAN | LIMESTONE | FINE GRAINED | Usually massive, some bioclastic, shelly lenses. Often cleaved in outcrop, with calcite veining. | Grey and pinkish grey crinoidal limestones, up to 2m thick. Sparse fauna includes mainly crinoidal remains and shell fragments | Typical limestone - with dissolution features. | Extensively worked in small quarries, including for production of lime, but used locally for rough walling along the outcrop strip. | Within the Brendon Hills, occurs in very small scattered outcrops on [NAME], north of [NAME], and near Nettlecombe. Within the Quantock Hills, the Leigh Barton Limestone is only mappable south of Cothelstone Hill, south-east of [NAME] and south-west of Enmore |  | ? | Somerset County Council | Somerset English Heritage Atlas Area |  | 2012-05-16 10:21:07
1201 | Holwell Limestone | 1199 | [NAME] |  | PALE-GREY | Uniform | Grey | HOLWELL LIMESTONE | DEVONIAN | LIMESTONE | FINE GRAINED | Usually massive, some bioclastic, shelly lenses. Often cleaved in outcrop, with calcite veining. | Discontinuous limestone, up to 10m thick, ranging from thin crinoidal bands to grey, massive limestones, locally sandy. Rich fauna of fossil corals and stromatoporoids. | Typical limestone - with dissolution features. | Extensively worked in small quarries, including for production of lime, but used locally for rough walling along the outcrop strip. | Occurs within the Quantock Hills, where it is poorly developed on the north-western slopes of [NAME], but is thicker and well exposed in Holwell Combe and Hawkridge Common. |  | ? | Somerset County Council | Somerset English Heritage Atlas Area |  | 2012-05-16 10:21:07
1202 | [NAME] | 1199 | [NAME] |  | PALE-GREY | Uniform | Grey | AISHOLT LIMESTONE | DEVONIAN | LIMESTONE | FINE GRAINED | Usually massive, cleaved | Discontinuous grey crinoidal limestone, varies in thickness from 2m to 15m thick. Often with interbedded calcareous siltstones and silty slates. Sparsely fossiliferous. | Typical limestone - with dissolution features. | Extensively worked in small quarries, including for production of lime, but used locally for rough walling along the outcrop strip. | Occurs within the Quantock Hills mainly in vicinity of Aisholt and Lower Aisholt, also crops out in a ENE trend via Merridge across the north-western slopes  of Cothelstone Hill. |  | ? | Somerset County Council | Somerset English Heritage Atlas Area |  | 2012-05-16 10:21:07
1203 | [NAME] | 1199 | [NAME] |  | PALE-GREY | Uniform | Grey, pinkish-grey, reddish brown | ROADWATER [NAME] | DEVONIAN | LIMESTONE | FINE GRAINED | Massive, locally recrystallised; often thickly bedded | Persistent limestone that occurs throughout most of the Devonian outcrop, about 10m thick, grey or pinkish grey. Commonly contains a varied fossil fauna of corals and stromatoporoids | Typical limestone - with dissolution features. Many limestones calcite-veined | Extensively worked in small quarries, including for production of lime, but used locally for rough walling along the outcrop strip. | Occurs in a semi-continuous, narrow linear outcrop across Exmoor and [NAME], through Exford, Wheddon Cross, Luxborough, Treborough and [NAME] to north of Rodhuish. [NAME], north of [NAME], and near Nettlecombe. Within the Quantock Hills, the Roadwater Limestone crops out in a semi-continuous band stretching from near Doddington, south-west of Over [NAME], [NAME], near Plainsfield, to Aisholt and Merridge. The southernmost workings of old pits occur on Cothelstone Hill and near East Bagborough |  | ? | Somerset County Council | Somerset English Heritage Atlas Area |  | 2012-05-16 10:21:07
1204 | Rodhuish Limestone | 1199 | [NAME] |  | PALE-GREY | Uniform | Pinkish grey, purple to dark grey | RODHUISH LIMESTONE | DEVONIAN | LIMESTONE | FINE GRAINED | Characteristically thick bedded or massive | Discontinuous limestone, up to about 5m thick, some interbedded slates. Locally yields a sparse fossil coral fauna. | Typical limestone - with dissolution features. | Extensively worked in small quarries, including for production of lime, but used locally for rough walling along the outcrop strip. | Within the Brendon Hills, occurs in a faulted N-S trending outcrop immediately west of Rodhuish, extending north towards [NAME]. Within the Quantock Hills, the Rodhuish Limestone crops out on the northern side of [NAME], at Pepper Hill, Adscombe, south-east of Courtway, and the southern side of Cockercombe |  | ? | Somerset County Council | Somerset English Heritage Atlas Area |  | 2012-05-16 10:21:07
1205 | Cockercombe Tuff | 1 |  |  | GREEN | Spotted | Greenish-grey, dark grey, dark green, bluish-green. | COCKER COMBE TUFF | DEVONIAN | SANDSTONE, COARSE-GRAINED | FINE GRAINED | Usually massive, highly cleaved in outcrop. | Crushed volcanic ash ([NAME], spotted lithic tuff) of greyish green colour apparently derived from chlorite, often spotted with purple-black oxide stains and including small spherical masses of a white, earthy texture which give an amygdaloidal structure. | Fairly hard, but oxide spots and pale spherical areas prone to decomposition on weathering. | Used locally as rubblestone and ashlar mainly within northern [NAME], especially around Plainsfield, and also in Taunton. | Confined to small area around Cockercombe and [NAME], in the northern Quantock Hills. |  | ? | Somerset County Council | Somerset English Heritage Atlas Area |  | 2012-05-16 10:21:07
1206 | [NAME] | 1 |  | Mineralogically the sandstones are typically composed mainly of quartz, with some orthoclase (or oligoclase) feldspar; accessory minerals include zircon, tourmaline with iron oxides and a white mica (secondary after feldpsar). Fracture often conchoidal. | PURPLE | Uniform | Purple, purplish-brown, reddish brown, grey and green. | HANGMAN SANDSTONE FORMATION |  | SANDSTONE, FINE-GRAINED | FINE GRAINED | Cross-bedded and wedge-bedded channel sets, with curved bedding surfaces are typical in many sandstone units, and often on a large-scale exhibiting fining-up sequences. Finer mudstone lithologies and thin sheet sandstones often exhibit (cross) lamina | A very thick and variable Formation which consists mainly of medium to thickly bedded or massive sandstones, with thin, cleaved mudstones and very fine grained sandstone interbeds. Lithologies are variable across the outcrop (giving rise to a range o | Quartzitic sandstones tend to be homogeneous, strong or very strong, and resistant. There is an abundant supply of rubbly Hangman Sandstone available, but its hardness makes it difficult to dress, and a typical use is in ragwork or rubble fashion in |  | Extensive outcrop areas in north Exmoor and the northern [NAME], including most of the dramatic cliffs from [NAME] to [NAME] (excluding [NAME] and Porlock areas), and also extending southwards in a broad landward belt incorporating |  | ? | Somerset County Council | Somerset English Heritage Atlas Area |  | 2012-05-16 10:21:07
1207 | [NAME] | 1206 | [NAME] | Mineralogically the sandstones are typically composed mainly of quartz, with some orthoclase (or oligoclase) feldspar; accessory minerals include zircon, tourmaline with iron oxides and a white mica (secondary after feldpsar). Fracture often conchoidal. | PURPLE | Uniform | Purple, purplish-brown, reddish brown, grey and green. | HANGMAN SANDSTONE FORMATION | DEVONIAN | SANDSTONE, FINE-GRAINED | FINE GRAINED | Cross-bedded and wedge-bedded channel sets, with curved bedding surfaces are typical in many sandstone units, and often on a large-scale exhibiting fining-up sequences. Finer mudstone lithologies and thin sheet sandstones often exhibit (cross) lamination, some bedding planes display wave ripple marks, scour and polygonal dessication crack features. | A very thick and variable Formation which consists mainly of medium to thickly bedded or massive sandstones, with thin, cleaved mudstones and very fine grained sandstone interbeds. Lithologies are variable across the outcrop (giving rise to a range of different rock divisions and names), and although fine to medium grained sandstones predominate, the sequence includes shales, gritty and feldspathic sandstones, and quartz pebble and mud-pellet conglomerates. Poorly fossiliferous. | Quartzitic sandstones tend to be homogeneous, strong or very strong, and resistant. There is an abundant supply of rubbly Hangman Sandstone available, but its hardness makes it difficult to dress, and a typical use is in ragwork or rubble fashion in many buildings. | One of the main building stones used in western Somerset, the quartzitic sandstones in particular being used for a range of functions in buildings, stone walls (and also roadstone). Ragstone walling is typical across the outcrop, but some lithologies are also used as ashlar, for example in Victorian/Edwardian houses in Minehead, and massive ashlar blocks (eg. Watchet church tower). | Extensive outcrop areas in north Exmoor and the northern [NAME], including most of the dramatic cliffs from [NAME] to [NAME] (excluding [NAME] and Porlock areas), and also extending southwards in a broad landward belt incorporating Dunkery Hill, Timberscombe and Dunster. Also comprises the northern [NAME], extending from West Quantoxhead southwards to West Bagborough. |  | ? | Somerset County Council | Somerset English Heritage Atlas Area |  | 2012-05-16 10:21:07
1208 | Little [NAME] | 1207 | [NAME] | Mineralogically the sandstones are typically composed mainly of quartz, with some orthoclase (or oligoclase) feldspar; accessory minerals include zircon, tourmaline with iron oxides and a white mica (secondary after feldpsar). Fracture often conchoidal. | PURPLE | Uniform | Purple, purplish-brown, reddish brown, grey and green. | LITTLE HANGMAN MEMBER | DEVONIAN | SANDSTONE, FINE-GRAINED | FINE GRAINED |  | Purple, brown and greenish-grey massive and bedded fine-grained quartzitic sandstones, with some siltstones. In places the sandstones show wedge bedding and channel-fill structures and small-scale cross bedding. Some beds exhibit subordinate mudstone-pellet and quartz-pebble conglomerates | Quartzitic sandstones tend to be homogeneous, strong or very strong, and resistant, but their hardness makes them  difficult to dress, and a typical use is in ragwork or rubble fashion in many buildings. | One of the main building stones used in western Somerset, the quartzitic sandstones in particular being used for a range of functions in buildings, stone walls (and also roadstone). Ragstone walling is typical across the outcrop. | Within the Quantock Hills occurs in the northern and eastern areas of the ridge stretching from east [NAME], via Dowsborough, [NAME] to a southern strip at West Bagborough |  | ? | Somerset County Council | Somerset English Heritage Atlas Area |  | 2012-05-16 10:21:07
1209 | Rawn's Shales-and-Sandstones | 1207 | [NAME] | Mineralogically the sandstones are typically composed mainly of quartz, with some orthoclase (or oligoclase) feldspar; accessory minerals include zircon, tourmaline with iron oxides and a white mica (secondary after feldpsar). Fracture often conchoidal. | PURPLE | Uniform | Grey | RAWNS MEMBER | DEVONIAN | SANDSTONE, FINE-GRAINED | FINE GRAINED |  | Grey heterolithic beds, dominantly fissile, argillaceous silty mudstones and siltstones, alternating with cross-bedded, fine-grained sandstone |  | One of the main building stones used in western Somerset, the quartzitic sandstones in particular being used for a range of functions in buildings, stone walls (and also roadstone). Ragstone walling is typical across the outcrop. | Within the Quantock Hills occurs in a narrow belt extending from Weacombe to [NAME] post, and [NAME] to Bagborough Hill |  | ? | Somerset County Council | Somerset English Heritage Atlas Area |  | 2012-05-16 10:21:07
1210 | Trentishoe Grits | 1207 | [NAME], [NAME] | Mineralogically the sandstones are typically composed mainly of quartz, with some orthoclase (or oligoclase) feldspar; accessory minerals include zircon, tourmaline with iron oxides and a white mica (secondary after feldpsar). Fracture often conchoidal. | PURPLE | Uniform | Purple, purplish-brown, reddish brown, grey and green. | TRENTISHOE MEMBER | DEVONIAN | SANDSTONE, FINE-GRAINED | FINE GRAINED | Abundant sedimentary structures, including scour structures and silty drapes, cross beds and dessication cracks | Thick sequence mainly of grey, purple and green quartzitic fine- to medium-grained sandstone, commonly parallel laminated and convolute-bedded, with subordinate shale and silty shale interbeds, occasional conglomerates and coarse-grained pebbly sandstones. Local distinctive facies of deformed laminae of red siltstones and very fine-grained sandstones in which desiccation cracks alternate with convolute laminae | Quartzitic sandstones tend to be homogeneous, strong or very strong, and resistant, but their hardness makes them  difficult to dress, and a typical use is in ragwork or rubble fashion in many buildings. | One of the main building stones used in western Somerset, the quartzitic sandstones in particular being used for a range of functions in buildings, stone walls (and also roadstone). Ragstone walling is typical across the outcrop. | Extensive outcrop areas in north Exmoor and the northern [NAME], including most of the dramatic cliffs from [NAME] to [NAME] (excluding [NAME] and Porlock areas), and also extending southwards in a broad landward belt incorporating Dunkery Hill, Timberscombe and Dunster. Within the Quantock Hills , the Trentishoe Member is exposed in an area encompassing Weacombe, Triscombe, Crowcombe, [NAME], Wills Neck and Bagborough Hill |  | ? | Somerset County Council | Somerset English Heritage Atlas Area |  | 2012-05-16 10:21:07
1211 | [NAME] | 1207 | Trentishoe Grits | Mineralogically the sandstones are typically composed mainly of quartz, with some orthoclase (or oligoclase) feldspar; accessory minerals include zircon, tourmaline with iron oxides and a white mica (secondary after feldpsar). Fracture often conchoidal. | PURPLE | Uniform | Purple, purplish-brown, reddish brown, grey and green. | TRENTISHOE MEMBER | DEVONIAN | SANDSTONE, FINE-GRAINED | FINE GRAINED | Abundant sedimentary structures, including scour structures and silty drapes, cross beds and dessication cracks | Thick sequence mainly of grey, purple and green quartzitic fine- to medium-grained sandstone, commonly parallel laminated and convolute-bedded, with subordinate shale and silty shale interbeds, occasional conglomerates and coarse-grained pebbly sandstones. Local distinctive facies of deformed laminae of red siltstones and very fine-grained sandstones in which desiccation cracks alternate with convolute laminae | Quartzitic sandstones tend to be homogeneous, strong or very strong, and resistant, but their hardness makes them  difficult to dress, and a typical use is in ragwork or rubble fashion in many buildings. | One of the main building stones used in western Somerset, the quartzitic sandstones in particular being used for a range of functions in buildings, stone walls (and also roadstone). Ragstone walling is typical across the outcrop. | Extensive outcrop areas in north Exmoor and the northern [NAME], including most of the dramatic cliffs from [NAME] to [NAME] (excluding [NAME] and Porlock areas), and also extending southwards in a broad landward belt incorporating Dunkery Hill, Timberscombe and Dunster. Within the Quantock Hills , the Trentishoe Member is exposed in an area encompassing Weacombe, Triscombe, Crowcombe, [NAME], Wills Neck and Bagborough Hill |  | ? | Somerset County Council | Somerset English Heritage Atlas Area |  | 2012-05-16 10:21:07
1212 | [NAME] | 1 |  |  | RED |  |  | SHERWOOD SANDSTONE GROUP | PERMIAN | SANDSTONE |  |  | Sandstone |  |  | Somerset |  | ? | Somerset County Council | Somerset English Heritage Atlas Area |  | 2012-05-16 10:21:07
1213 | Upper Lias Limestone | 1 |  |  |  |  |  | LIAS GROUP | TRIASSIC | LIMESTONE |  |  |  |  |  | Somerset |  | ? | Somerset County Council | Somerset English Heritage Atlas Area |  | 2012-05-16 10:21:07
1214 | Tufa | 1 |  | Used as decorative stone |  |  |  | TUFA | [NAME] | LIMESTONE |  |  |  |  |  | Somerset |  | ? | Somerset County Council | Somerset English Heritage Atlas Area |  | 2012-05-16 10:21:07
1215 | Capton Stone | 1163 | Capton Red Sandstone |  | RED |  | Red. | BUDLEIGH SALTERTON PEBBLE BEDS FORMATION | TRIASSIC | SANDSTONE |  |  | Sandstone |  |  | Somerset |  | ? | Somerset County Council | Somerset English Heritage Atlas Area |  | 2012-05-16 10:21:07
1216 | Chelynch Stone | 1125 |  |  |  |  |  | INFERIOR OOLITE GROUP | JURASSIC | LIMESTONE, OOIDAL |  |  |  |  |  | Somerset |  | ? | Somerset County Council | Somerset English Heritage Atlas Area |  | 2012-05-16 10:21:07
1217 | Conygar | 1206 | Hangman Sandstone Formation, Bristol Blue Pennant |  |  |  |  | HANGMAN SANDSTONE FORMATION | DEVONIAN | SANDSTONE |  |  | Sandstone |  |  | Somerset |  | ? | Somerset County Council | Somerset English Heritage Atlas Area |  | 2012-05-16 10:21:07
1218 | Bristol Blue Pennant | 1217 | Hangman Sandstone Formation, Conygar |  |  |  |  | HANGMAN SANDSTONE FORMATION | DEVONIAN | SANDSTONE |  |  | Sandstone |  |  | Somerset |  | ? | Somerset County Council | Somerset English Heritage Atlas Area |  | 2012-05-16 10:21:07
1219 | Grey Ham Hill | 1132 | Ham Stone | Worked since Roman times. Two beds are worked, a '[NAME] which is a pale brown or [NAME] colour, the most distinctive and well known, and a 'Grey Bed' darker in colour and more durable. |  |  |  | HAM HILL LIMESTONE MEMBER | JURASSIC | SANDSTONE, FINE-GRAINED | MEDIUM GRAINED | Parallel-bedding and particularly cross-bedding structures are common and characteristic, typically picked out by darker, brownish colour to laminae. | Sandstone |  | High quality, versatile and attractive stone - one of the most important and distinctive building stones in Somerset. Widely used for mouldings, stone roof tiles; also for fine ashlar and rubble walling. Used extensively for walls and houses in nearby villages and high status, large mansions / country estates, such as Montacute House. | Somerset |  | ? | Somerset County Council | Somerset English Heritage Atlas Area |  | 2012-05-16 10:21:07
1220 | [NAME] | 1132 | Ham Stone | Worked since Roman times. Two beds are worked, a '[NAME] which is a pale brown or [NAME] colour, the most distinctive and well known, and a 'Grey Bed' darker in colour and more durable. | PALE-YELLOW |  |  | HAM HILL LIMESTONE MEMBER | JURASSIC | SANDSTONE, FINE-GRAINED | MEDIUM GRAINED | Parallel-bedding and particularly cross-bedding structures are common and characteristic, typically picked out by darker, brownish colour to laminae. | Sandstone |  | High quality, versatile and attractive stone - one of the most important and distinctive building stones in Somerset. Widely used for mouldings, stone roof tiles; also for fine ashlar and rubble walling. Used extensively for walls and houses in nearby villages and high status, large mansions / country estates, such as Montacute House. | Somerset |  | ? | Somerset County Council | Somerset English Heritage Atlas Area |  | 2012-05-16 10:21:07
1221 | Luccombe (Triassic) Sandstone | 1 |  |  |  |  |  | MERCIA MUDSTONE GROUP | TRIASSIC | SANDSTONE |  |  | Sandstone |  |  | Somerset |  | ? | Somerset County Council | Somerset English Heritage Atlas Area |  | 2012-05-16 10:21:07
1222 | Tracebridge Slates | 1 | Doddiscombe Beds |  | BLACK | Uniform | Dark greyish. | DODDISCOMBE FORMATION | CARBONIFEROUS | SILTSTONE | VERY FINE GRAINED | Fine lamination. | Black to dark grey, finely laminated slates and hard, thin, siliceous cherty mudstones, with sparse very thin siltstone beds. |  | Used locally for slates and walling (eg. car park at The Globe, Apperly). | A very small outcrop occurs in the far south west of Somerset, around Apperly and Tracebridge (abandoned slate quarries), approximately 7 km west-north-west of Wellington. The main outcrop then stretches westwards into [NAME]. |  | ? | Somerset County Council | Somerset English Heritage Atlas Area |  | 2012-05-16 10:21:07
1223 | Ammonite Marble | 1 |  |  |  |  |  | BLUE LIAS FORMATION AND CHARMOUTH [NAME] (UNDIFFERENTIATED) | TRIASSIC | LIMESTONE |  |  |  |  |  | Somerset |  | ? | Somerset County Council | Somerset English Heritage Atlas Area |  | 2012-05-16 10:21:07
1224 | [NAME] | 1223 | Ammonite Marble |  |  |  |  | BLUE LIAS FORMATION AND CHARMOUTH [NAME] (UNDIFFERENTIATED) | TRIASSIC to JURASSIC | LIMESTONE |  |  |  |  |  | Somerset |  | ? | Somerset County Council | Somerset English Heritage Atlas Area |  | 2012-05-16 10:21:07
1225 | Bastard Freestone | 1 |  |  |  |  |  | LANGPORT MEMBER AND BLUE LIAS FORMATION (UNDIFFERENTIATED) | TRIASSIC | LIMESTONE |  |  |  |  |  | Somerset |  | ? | Somerset County Council | Somerset English Heritage Atlas Area |  | 2012-05-16 10:21:07
1226 | [NAME] | 1 |  |  |  |  |  | [NAME] | DEVONIAN | SLATE |  |  |  |  |  | Somerset |  | ? | Somerset County Council | Somerset English Heritage Atlas Area |  | 2012-05-16 10:21:07
1227 | Trull Stone | 1 |  |  |  |  |  | MERCIA MUDSTONE GROUP | TRIASSIC | SANDSTONE |  |  |  |  |  | Somerset |  | ? | Somerset County Council | Somerset English Heritage Atlas Area |  | 2012-05-16 10:21:07
1228 | [NAME] | 1 |  |  |  |  |  | PILTON [NAME] | DEVONIAN | SLATE |  |  |  |  |  | Somerset |  | ? | Somerset County Council | Somerset English Heritage Atlas Area |  | 2012-05-16 10:21:07
1229 | Upper Vobster Stone | 1 |  | Hard pale grey quartzitic sandstones |  |  |  | QUARTZITIC SANDSTONE FORMATION | CARBONIFEROUS | SANDSTONE |  |  |  |  |  | Somerset |  | ? | Somerset County Council | Somerset English Heritage Atlas Area |  | 2012-05-16 10:21:07
1230 | [NAME] | 1 |  |  |  |  |  | UPCOTT SLATES FORMATION | DEVONIAN | SLATE |  |  |  |  |  | Somerset |  | ? | Somerset County Council | Somerset English Heritage Atlas Area |  | 2012-05-16 10:21:07
1231 | Sparkford | 1 |  |  |  |  |  | WESTBURY FORMATION AND COTHAM MEMBER (UNDIFFERENTIATED) | TRIASSIC | NOT ENTERED |  |  |  |  |  | Somerset |  | ? | Somerset County Council | Somerset English Heritage Atlas Area |  | 2012-05-16 10:21:07
1232 | Yeovil Marble | 1223 | Ammonite Marble |  |  |  |  | BLUE LIAS FORMATION AND CHARMOUTH [NAME] (UNDIFFERENTIATED) | TRIASSIC to JURASSIC | LIMESTONE |  |  |  |  |  | Somerset |  | ? | Somerset County Council | Somerset English Heritage Atlas Area |  | 2012-05-16 10:21:07