AndreaBozzo/ceres-open-data-index huggingface dataset:
Lake Eyre - Th equivalent concentration grid (AWAGS, nasvd)

The radiometric, or gamma-ray spectrometric method, measures the natural variations in the gamma-rays detected near the Earth's surface as the result of the natural radioactive decay of potassium (K), uranium (U) and thorium (Th). The data collected are processed via standard methods to ensure the response recorded is that due only to the rocks in the ground. The results produce datasets that can be interpreted to reveal the geological structure of the sub-surface. The processed data is checked for quality by GA geophysicists to ensure that the final data released by GA are fit-for-purpose.
This radiometric thorium grid has a cell size of 0.0004 degrees (approximately 41m) and shows thorium element concentration of the Lake Eyre Airborne Magnetic Radiometric and DEM survey, SA, 2017 in units of parts per million (or ppm). The data used to produce this grid was acquired in 2017 by the SA Government, and consisted of 92215 line-kilometres of data at 200m line spacing and 60m terrain clearance. To constrain long wavelengths in the grid, an independent data set, the Australia-wide Airborne Geophysical Survey (AWAGS) airborne magnetic data, was used to control the base levels of the survey grid.

Tags: AWAGS, Australia, EARTH SCIENCES, Earth sciences, GADDS2.0, NCI, Published_External, SA, Th, airborne digital data, gamma-ray, geophysical survey, geophysics, grid, rad, radiometrics, raster, spectrometry, survey 1302, thorium
Organization: Geoscience Australia Data
The Bullara Limestone, a new rock-stratigraphic unit from the Carnarvon Basin, Western Australia

A new rock unit, the Bullara Limestone, is proposed for a Late Oligocene bioclastic limestone, which is probably restricted to the subsurface of Rough Range. The Bullara Limestone is a lateral equivalent of the lower part of the Mandu Calcarenite, and contains a Tertiary lower e stage larger foraminiferal fauna and a Zone N.3 planktic fauna.

Tags: Earth Sciences, GA Publication, Journal, Published_External, WA
Organization: Geoscience Australia Data
GSNSW Exploration NSW Area J Cobar Nymagee elevation grid geodetic

Digital Elevation data record the terrain height variations from the processed point- or line-located data recorded during a geophysical survey. This GSNSW Exploration NSW Area J Cobar Nymagee elevation grid geodetic is elevation data for the GSNSW Exploration NSW Area J, Cobar-Nymagee merge, 1999. This survey was acquired under the project No. 1354 for the geological survey of NSW. The grid has a cell size of 0.00049 degrees (approximately 50m).  This grid contains the ground elevation relative to the geoid for the GSNSW Exploration NSW Area J, Cobar-Nymagee merge, 1999. It represents the vertical distance from a location on the Earth's surface to the geoid. The data are given in units of meters. The processed data is checked for quality by GA geophysicists to ensure that the final data released by GA are fit-for-purpose.

Tags: Australia, DEM, EARTH SCIENCES, Earth sciences, Elevation, GADDS2.0, NCI, NSW, Published_External, digital data, geoid, geophysical survey, geophysics, grid, raster, survey 1354, terrain
Organization: Geoscience Australia Data
Tucker 1:100 000 unpublished topographic map

At this scale 1cm on the map represents 1km on the ground. Each map covers a minimum area of 0.5 degrees longitude by 0.5 degrees latitude or about 54 kilometres by 54 kilometres. The contour interval is 20 metres.

Tags: 100K unpublished, AU-NT, Published_External, Topographic Map, Topology
Organization: Geoscience Australia Data
Southern Thomson Project refraction seismic data

Refraction seismic data collected as part of the Southern Thomson Project at 16 sites during October 2015. Please refer to GA Record eCat 111363 for further details on the acquisition, processing and modelling results.

Tags: Earth Sciences, Pre-drilling geophysics, Published_External, Southern Thomson Orogen, UNCOVER, audio-magnetotellurics, seismic refraction
Organization: Geoscience Australia Data
Native Gap 1:50 000 topographic map

Product Specifications Coverage: Partial coverage, predominantly in northern Australia, along major transport routes, and other selected areas. About 1000 maps have been published to date. Currency: Ranges from 1968 to 2006. Coordinates: Geographical and UTM. Datum: AGD66, new edition WGS84; AHD. Projection: Universal Transverse Mercator UTM. Medium: Paper, flat copies only.

Tags: AU-NT, Orthophoto Map, Published_External, Topographic Map, Topology, topography
Organization: Geoscience Australia Data
Eudunda 1:100 000 topographic map

At this scale 1cm on the map represents 1km on the ground. Each map covers a minimum area of 0.5 degrees longitude by 0.5 degrees latitude or about 54 kilometres by 54 kilometres. The contour interval is 20 metres. Many maps are supplemented by hill shading. These maps contain natural and constructed features including road and rail infrastructure, vegetation, hydrography, contours, localities and some administrative boundaries. Product Specifications Coverage: Australia is covered by more than 3000 x 1:100 000 scale maps, of which 1600 have been published as printed maps. Unpublished maps are available as compilations. Currency: Ranges from 1961 to 2009. Average 1997. Coordinates: Geographical and either AMG or MGA coordinates. Datum: AGD66, GDA94; AHD Projection: Universal Transverse Mercator UTM. Medium: Printed maps: Paper, flat and folded copies. Compilations: Paper or film, flat copies only.

Tags: 100K scale, AU-SA, Published_External, Topographic Map, Topology, topography
Organization: Geoscience Australia Data
Bandalup 1:50 000 topographic map

Product Specifications Coverage: Partial coverage, predominantly in northern Australia, along major transport routes, and other selected areas. About 1000 maps have been published to date. Currency: Ranges from 1968 to 2006. Coordinates: Geographical and UTM. Datum: AGD66, new edition WGS84; AHD. Projection: Universal Transverse Mercator UTM. Medium: Paper, flat copies only.

Tags: 50K scale, AU-WA, Published_External, Topographic Map, Topology, topography
Organization: Geoscience Australia Data
Hydrogeology of the Australian Capital Territory and environs

The report and map synthesise groundwater studies made since 1954. 
Analysis of hydrogeological data defines the distribution of bore yield and groundwater chemistry for the regional aquifers of the ACT and environs. The aquifers are composed of fractured sedimentary, volcanic, and igneous rocks, and limited unconsolidated sediments in several different physiographic settings. Analysis of data, based on a three-way geological, 'broad-physiographic', and 'local-landform' subdivision scheme, shows that for bore yield, only the 'local-landform' parameter shows consistent relationships: in a given geomorphic unit, hill-crest bores always have lower yields than valley-floor or hill-slope bores. The highest mean yields are obtained from valley-floor bores tapping fractured aquifers in Ordovician to Early Silurian sedimentary rocks on the Cullarin Tableland. Groundwater yield is mostly obtained from the top 40 m of bores, and boreholes deeper than 100 m failed to improve yields. Groundwaters are generally dilute - less than 1200 mglL total dissolved salts. The variation in solute concentration is attributable to the geochemistry of the aquifer, the dissolution of soluble salts in the unsaturated zone of recharge areas, and the residence time of water in the aquifer. The better-quality water is found in aquifers that are geochemically stable, under high hydraulic gradients, close to recharge zones.

Tags: AU-ACT, Earth Sciences, GA Publication, Published_External, Report, hydrogeology
Organization: Geoscience Australia Data
AUSGeoid98 v.1.0 data files: Torres Strait (sc54)

AUSGeoid98 data files contain a 2 minute grid of AUSGeoid98 data covering the Australian region, which you can use to interpolate geoid-ellipsoid separations for the positions required.You can use your own interpolation software, or you can use Geoscience Australia's Windows Interpolation software (Winter). The data files are text files in a standard format that cover the same area as standard topographic map areas. Files covering both 1:250,000 (approximately 100 x 150 km) and 1:1,000,000 (approximately 400 x 600 km) map areas are available. There is a 4 minute overlap on all sides of each area. Data format: AUSGeoid98 data files have a header record at the start of each file, to distinguish them from the superseded AUSGeoid93 data files. AUSGeoid98 data files show the geoid-ellipsoid separation to 3 decimal places, while the superseded AUSGeoid93 data files showed only 2 decimal places. AUSGeoid98 deflections of the vertical were computed from the geoid-ellipsoid separation surface, while the AUSGeoid93 deflections of the vertical were computed from OSU91A.

Tags: AU, AUSGeoid98, Geodesy, Geodetic Data, Published_External, dataset, geodesy
Organization: Geoscience Australia Data
Offshore Marine Seismic Multimedia Presentation

An important part of the management of Australia's marine resources is mapping the geology beneath the sea floor; as part of this work we must understand and mitigate associated environmental impacts. This multimedia product provides background information on marine seismic surveys and the environment, as well as Geoscience Australia's role in environmental mitigation and research. For further information visit http://www.ga.gov.au/about/projects/m....
About the data visualisation:
The visualisation of the seismic survey process is representative of a seismic survey, and does not represent any particular survey performed by a particular party. It is not to scale, and is only intended to convey the basic concepts of marine seismic surveys. 
Production credits:
Script: Robin Swindell, Neil Caldwell, Chantelle Farrar, Andrew Carroll, Rachel Przeslawski
Production Management: Chantelle Farrar, Neil Caldwell
Edit, Cinematography, Sound: Michael O'Rourke
3D Data Visualisation, Animation: Neil Caldwell, Julie Silec
Broadcast Design: Julie Silec
Scientific Advice: Andrew Carroll, Rachel Przeslawski, Merrie-Ellen Gunning
http://www.ga.gov.au
Category 
Science &amp; Technology
License 
Creative Commons Attribution license (reuse allowed)

Tags: Earth Sciences, Marine, Published_External, video
Organization: Geoscience Australia Data
Neumayer Valley 1:100 000 topographic map

At this scale 1cm on the map represents 1km on the ground. Each map covers a minimum area of 0.5 degrees longitude by 0.5 degrees latitude or about 54 kilometres by 54 kilometres. The contour interval is 20 metres. Many maps are supplemented by hill shading. These maps contain natural and constructed features including road and rail infrastructure, vegetation, hydrography, contours, localities and some administrative boundaries. Product Specifications Coverage: Australia is covered by more than 3000 x 1:100 000 scale maps, of which 1600 have been published as printed maps. Unpublished maps are available as compilations. Currency: Ranges from 1961 to 2009. Average 1997. Coordinates: Geographical and either AMG or MGA coordinates. Datum: AGD66, GDA94; AHD Projection: Universal Transverse Mercator UTM. Medium: Printed maps: Paper, flat and folded copies. Compilations: Paper or film, flat copies only.

Tags: 100K scale, AU-QLD, Published_External, Topographic Map, Topology, topography
Organization: Geoscience Australia Data
Sandstone 1:250 000, R502 historical topographic map

The R502 series of maps has been replaced by the National Topographic Map Series (NTMS). The R502 series consists of 542 map sheets and covers Australia at a scale of 1:250,000. It was compiled from aerial photography, but only about one quarter of the series was contoured. The standard sheet size is 1 degree of latitude by 1.5 degrees of longitude. Transverse Mercator map projection and Clark 1858 datum were used. Coverage of the country was completed in 1968.

Tags: 250K scale, AU_WA, Published_External, Topographic Map, Topology
Organization: Geoscience Australia Data
Bilyana 1:50 000 topographic map

Product Specifications Coverage: Partial coverage, predominantly in northern Australia, along major transport routes, and other selected areas. About 1000 maps have been published to date. Currency: Ranges from 1968 to 2006. Coordinates: Geographical and UTM. Datum: AGD66, new edition WGS84; AHD. Projection: Universal Transverse Mercator UTM. Medium: Paper, flat copies only.

Tags: 50K scale, AU-QLD, Published_External, Topographic Map, Topology, topography
Organization: Geoscience Australia Data
Ballarat 1:250 000, R502 historical topographic map

The R502 series of maps has been replaced by the National Topographic Map Series (NTMS). The R502 series consists of 542 map sheets and covers Australia at a scale of 1:250,000. It was compiled from aerial photography, but only about one quarter of the series was contoured. The standard sheet size is 1 degree of latitude by 1.5 degrees of longitude. Transverse Mercator map projection and Clark 1858 datum were used. Coverage of the country was completed in 1968.

Tags: 250K scale, AU_VIC, Published_External, Topographic Map, Topology
Organization: Geoscience Australia Data
The Australian regolith and mineral exploration

Much of the Australian landscape is old. In places, such as the western shields, its origin can be traced to the Precambrian, but elsewhere it dates from the Palaeozoic to Recent and owes much of its character to the superimposition of multiple weathering events under different conditions. This has resulted in a complex regolith in which many of the features of the underlying bedrock have been greatly modified, thereby hindering geological mapping and concealing mineral deposits. Conversely, weathering processes have produced ore bodies, most importantly of aluminium, gold and nickel. The oldest landscapes are in the shields of the western plateau. Some are covered by thick and complex regolith as a result of long exposure and tectonic quiescence (e.g. the Yilgarn Craton), whereas others are almost free of regolith, owing to long-term physical erosion (e.g. Arnhem Plateau). In comparison, landscapes of the eastern third of the continent are younger, having been developed on tectonically active Palaeozoic rocks of the eastern highlands. The regolith is variable in thickness and complexity and dates mainly from the Mesozoic and Tertiary, although some Permian landscapes and regolith are preserved. Major depositional basins cover much of the western shield and Palaeozoic terrains. The landscape of these is comparatively flat and dates from the mid-Cretaceous to late Tertiary. It is typified by erosional remnants of deeply weathered rocks capped by duricrust (ferricrete, silcrete, bauxite), and in many areas gentle tectonic deformation.  Deep weathering is a unifying feature of Australian landscape and regolith , and a deep weathering profile is present across the continent.  It typically comprises, from the base, a zone of weathered rock in which the primary lithic fabrics are preserved (saprolite), commonly bleached towards the top, especially on felsic rocks, overlain by a quartz- and/or clay-rich zone with ferruginous mottling and an upper aluminous, ferruginous or siliceous horizon. This profile may be preserved or partly eroded, and buried beneath later sediments. Deep weathering mainly occurred during the wetter and, at times, warmer periods during the late Mesozoic and early Tertiary, although it is unclear whether it was cyclical or continuous through this period. Arid climatic phases during the Quaternary have left a marked imprint on the Australian regolith. Most notable are the widespread aeolian sediments which mantle much of the continent, and the addition of alkali and alkaline earth elements and associated anions (e.g. carbonate, sulphate and halide) as overprints to the leached regolith and the groundwater.  Weathering can result in the complete alteration of mineralogical, chemical and petrographic characteristics of the rocks and any mineralisation that they host. However, the dispersion of the ore-related elements can crcate larger, though subtle, exploration targets.

Tags: Earth Sciences, GA Publication, Journal, Published_External
Organization: Geoscience Australia Data
AUSGeoid98 v.1.0 data files: Marble Bar (sf50-08)

AUSGeoid98 data files contain a 2 minute grid of AUSGeoid98 data covering the Australian region, which you can use to interpolate geoid-ellipsoid separations for the positions required.You can use your own interpolation software, or you can use Geoscience Australia's Windows Interpolation software (Winter). The data files are text files in a standard format that cover the same area as standard topographic map areas. Files covering both 1:250,000 (approximately 100 x 150 km) and 1:1,000,000 (approximately 400 x 600 km) map areas are available. There is a 4 minute overlap on all sides of each area. Data format: AUSGeoid98 data files have a header record at the start of each file, to distinguish them from the superseded AUSGeoid93 data files. AUSGeoid98 data files show the geoid-ellipsoid separation to 3 decimal places, while the superseded AUSGeoid93 data files showed only 2 decimal places. AUSGeoid98 deflections of the vertical were computed from the geoid-ellipsoid separation surface, while the AUSGeoid93 deflections of the vertical were computed from OSU91A.

Tags: AU, AUSGeoid98, Geodesy, Geodetic Data, Published_External, dataset, geodesy
Organization: Geoscience Australia Data
Victoria River Basin (East), NT, 1967/68 (P344), magnetic line data, AWAGS levelled

Total magnetic intensity (TMI) data measures variations in the intensity of the Earth's magnetic field caused by the contrasting content of rock-forming minerals in the Earth crust. Magnetic anomalies can be either positive (field stronger than normal) or negative (field weaker) depending on the susceptibility of the rock. The data are processed via standard methods to ensure the response recorded is that due only to the rocks in the ground. The results produce datasets that can be interpreted to reveal the geological structure of the sub-surface. The processed data is checked for quality by GA geophysicists to ensure that the final data released by GA are fit-for-purpose.
 These line dataset from the Victoria River Basin (East), NT, 1967/68 survey were acquired in 1967 by the NT Government, and consisted of 36527 line-kilometres of data at 1600m line spacing and 150m terrain clearance. To constrain long wavelengths in the data, an independent data set, the Australia-wide Airborne Geophysical Survey (AWAGS) airborne magnetic data, was used to control the base levels of the survey data. This survey data is essentially levelled to AWAGS.

Tags: AWAGS, Australia, EARTH SCIENCES, Earth sciences, GADDS2.0, NT, Published_External, airborne digital data, geophysical survey, geophysics, line, magnetic, magnetics, magnetism and palaeomagnetism, survey 344, vector
Organization: Geoscience Australia Data
Revised stratigraphy of the Ordovician (Late Tremadoc-Arenig) Prices Creek Group and Devonian Poulton Formation, Lennard Shelf, Canning Basin, Western Australia

The Early Ordovician (late Tremadoc to Arenig) Prices Creek Group outcrops only on the northern margin of the Canning Basin in a small area centred on Prices Creek, 60 km southeast of Fitzroy Crossing. Recent hydrocarbon and mineral exploration has shown that the Prices Creek Group, previously defined as consisting of a lower Emanuel Formation and an upper Gap Creek Formation can now be subdivided into four formations.  The new formations comprise a basal transgressive sandstone unit, here named the Kunian Sandstone, which is overlain by a dolomitic carbonate-dominated unit, here named the Kudata Dolomite.  The Kunian Sandstone does not outcrop, but the Kudata Dolomite, which was formerly included in the Emanuel Formation, is exposed at the base of the type section of that unit along Emanuel Creek.  The Kudata Dolomite is conformably overlain by the revised Emanuel Formation.  The Gap Creek Formation is informally divided into a lower fossil-rich dolomitic unit and an upper fossil poor unit that shows evidence of a hypersaline depositional regime near the top.  The Poulton Formation is recognised in outcrop, paraconformably above the Gap Creek Formation and unconformably below the Pillara Formation.  The sandstone-dolomite-shale sequence of the lower Prices Creek Group has some economic potential, both for hydrocarbons and minerals.  Oil shows are common in shallow wells drilled into the Emanuel Formation and both live oil and bitumen have been found in cores from the Kudata Dolomite.  The oil is probably sourced from the Emanuel Formation which also serves as an effective regional seal.  Traces of lead and zinc have been found in the Kudata Dolomite, but the depth of the unit below the surface may reduce the economic value of any significant mineralisation that might be found.

Tags: Earth Sciences, GA Publication, Journal, Published_External, WA
Organization: Geoscience Australia Data
Mount Edgar 1:50 000 topographic map

Product Specifications Coverage: Partial coverage, predominantly in northern Australia, along major transport routes, and other selected areas. About 1000 maps have been published to date. Currency: Ranges from 1968 to 2006. Coordinates: Geographical and UTM. Datum: AGD66, new edition WGS84; AHD. Projection: Universal Transverse Mercator UTM. Medium: Paper, flat copies only.

Tags: 50K scale, AU-WA, Published_External, Topographic Map, Topology, topography
Organization: Geoscience Australia Data
Copley 1:250 000 topographic map

This map is part of the series that covers the whole of Australia at a scale of 1:250 000 (1cm on a map represents 2.5 km on the ground) and comprises 513 maps. This is the largest scale at which published topographic maps cover the entire continent. Each standard map covers an area of 1.5 degrees longitude by 1 degree latitude or about 150 kilometres from east to west and 110 kilometres from north to south. There are about 50 special maps in the series and these maps cover a non-standard area. Typically, where a map produced on standard sheet lines is largely ocean it is combined with its landward neighbour. These maps contain natural and constructed features including road and rail infrastructure, vegetation, hydrography, contours (interval 50m), localities and some administrative boundaries. The topographic map and data index shows coverage of the sheets. Product Specifications Coverage: The series covers the whole of Australia with 513 maps. Currency: Ranges from 1995 to 2009. 95% of maps have a reliability date of 1994 or later. Coordinates: Geographical and either AMG or MGA (post-1993) Datum: AGD66, GDA94, AHD. Projection: Universal Traverse Mercator (UTM) Medium: Paper, flat and folded copies.

Tags: 250K scale, AU-SA, Published_External, Topographic Map, Topology, topography
Organization: Geoscience Australia Data