AndreaBozzo/ceres-open-data-index huggingface dataset:
Exploring for the Future – New SHRIMP geochronology constraints on the basin evolution of the South Nicholson region

This Record presents twelve new zircon U-Pb geochronological results from the South Nicholson region, conducted on Geoscience Australia’s Sensitive High Resolution Ion Micro Probe (SHRIMP), as part of the Commonwealth Government’s Exploring for the Future (EFTF) program, an initiative to better understand the mineral, energy and groundwater potential of northern Australia. These data will facilitate greater understanding of the geological evolution of the South Nicholson region, a vast and underexplored region extending across north-eastern Northern Territory and far north-western Queensland.
Samples were collected from across the South Nicholson region including MOUNT DRUMMOND, CALVERT HILLS, BRUNETTE DOWNS (NT), LAWN HILL and CAMOOWEAL (QLD) 250K mapsheets. Four samples are from outcrop and eight samples from six stratigraphic and exploration drillholes. Samples were collected from the Paleoproterozoic Murphy Province and from overlying successions of the Paleoproterozoic Benmara Group and the Mesoproterozoic South Nicholson Group. Several samples from drillholes, have stratigraphic affinities that are uncertain and speculative.

Tags: EARTH SCIENCES, EFTF, Exploring for the Future, Published_External, SHRIMP, South Nicholson, Zircon
Organization: Geoscience Australia Data
Micropalaeontological report on further samples from a bore on the property of PJ McGirr, Lauradale, Bourke, northern New South Wales

The series of samples described in this report ranges from 1050 feet down to 1372 feet and is in continuation of those reported upon on 25/7/45.

Tags: AU-NSW, GA Publication, Geology, Published_External, Record, palaeontology
Organization: Geoscience Australia Data
Geological report on the Renison Bell tin field

A geological examination of the Renison Bell Tin Field was made in company with Mr. H.G.W. Keid, Field Geologist, Tasmanian department of Mines, during January and February, 1942. Workings, lode outcrops and the principal topographical features were mapped by plane table on a scale of 100 feet to an inch, and all accessible underground workings were plotted on a scale of 40 feet to an inch. Surface exposures were poor, owing to dense growth of bracken and other scrub and were largely confined to the vicinity of present or previous workings, tramlines, tracks, roads and railway lines. The history and production, geology, and economic geology of the field are outlined. The individual lodes are described in some detail. Methods of mineral exploration are discussed.

Tags: AU-TAS, GA Publication, Geology, Published_External, Record, economic geology, geology, mineral deposits, mineral exploration, resource assessment
Organization: Geoscience Australia Data
Report on gravity survey in the Leigh Creek area, South Australia

At the request of the South Australian Government a gravity survey to investigate the possibility of further coal basins to the north of the Leigh Creek coalfield was commenced by officers of this Bureau in October, 1947. This survey was suspended in December, and a report was prepared dealing with the work carried out to that date (1948/004 and 1948/048). The area covered, however, was only a small part of a much larger area covered by a superficial layer of Tertiary rocks, beneath which a coal basin could exist. The work was resumed in May, 1948, and was continued until September, when the party was withdrawn. In additional to the geophysical field work carried out on the covered area to the north of the known coal deposits, some work was done on the Center or Telford basin. A number of traverses was read on the western edge of the basin, with a view to determining places where shallow coal might be found. The geology of the area, technical matters, results, and recommendations are discussed in this report. Accompanying plans are included.

Tags: AU-SA, GA Publication, Geophysics, Published_External, Record, commodities, geophysics, gravity, mineral deposits, resource assessment
Organization: Geoscience Australia Data
Report on radioactive survey work in the Pilbara area, WA during 1948

The Pilbara gold field area contains many other minerals besides gold. It has long been known that the radio-active minerals, including monazite and certain rare-earth tentalates, occur in portions of the Pilbara field. There is also one known highly radio-active deposit of pilbarite at Wodgina. A survey to determine the position and extent of radio-active occurrences in the Pilbara area was carried out in 1947. In the report on this survey a number of recommendations was made, and subsequently a further field party was sent to the area during the period September - October, 1948. This report is an account of the geophysical work done by this second party. Investigations were carried out at Mount Francisco, Wodgina, Eastern Creek, Pilgangoora, Abydos, Trig Hill, Cooglegong, and Eley's Well. The main part of the work consisted of testing known or suspected rare-earth tantalate deposits. Also, a further search was made for monazite in areas on and near the Cooglegong tin fields. The technical procedure and results of the survey work are discussed in this report.

Tags: AU-WA, GA Publication, Geophysics, Published_External, Record, geophysics, mineral deposits, resource assessment
Organization: Geoscience Australia Data
Radiometric investigations in the Daly River area, Northern Territory

The area investigated, now commonly known as the Daly River Area, is situated on the north-eastern bank of the river, about 35 miles from the river mouth, and approximately 80 miles south of Darwin. The present survey was made in July 1950, in conjunction with work being done by the Bureau at Rum Jungle, and was a general investigation for possible radioactivity in the district. Although no radioactivity of interest was detected, it is considered desirable that the results of the investigation should be recorded. The geology of the area, field work, and results are described in this report.

Tags: AU-NT, Earth Sciences, GA Publication, Published_External, Record, geology, geophysics, mineral deposits, radiometrics
Organization: Geoscience Australia Data
Mineralogy of tungsten ores from Rye Park, N.S.W.

An enquiry has come from the Melbourne University Ore-Dressing Laboratory concerning the mineralogy of ores from Nos. 1 and 2 orebodies at Rye Park. Mr. K. S. Blaskett, Principal Research Officer at the Laboratory, has done treatment tests on ore from the No. 1 orebody, but is uncertain as to whether the sample investigated is typical of the ore as a whole. Sullivan and Dallwitz (1952) suggested that scheelite is more abundant than wolfram in the ore, but Mr. Blaskett found that the principal tungsten mineral is wolfram; evidence for this was obtained during ore treatment tests, and was confirmed by mineragraphic work. According to the geological report, fluorite is stated to be abundant, but very little fluorite was found in the ore treated in the Laboratory. As the bulk of the ore at Rye Park is in the No. 2 orebody, the question has arisen whether this ore is appreciably different from the sample tested. Differences in mineral association, grain-size, etc., may be very important in ore treatment. The following report describes in a general way what is known at present about the minerals and problems in which Mr. Blaskett is interested.

Tags: AU-NSW, Earth Sciences, GA Publication, Published_External, Record, mineralogy
Organization: Geoscience Australia Data
South Stradbroke Island Report on work completed to end of June, 1948

Systematic testing of South Stradbroke Island was started on 5th January, 1948. The boring and  concentrating of samples were carried out by Associated Minerals Pty. Ltd., Southport. Sitting, levelling and mapping of boreholes was carried out by the Bureau of Mineral Resources. Between January and June, boring was directed towards the high active dunes adjacent to the east coast, and the areas of fixed, vegetated dunes west of the active dunes. The results of the testing work are recorded in this report. The occurrence of heavy minerals has been tabulated. Eight accompanying locality, section, and contour plans are included.

Tags: AU-QLD, GA Publication, Geology, Published_External, Record, mineral deposits, research
Organization: Geoscience Australia Data
Microscopic examination of bore samples from Maree, South Australia

The bore under discussion is the first of a series which is being examined for a microfauna from the Great Artesian Basin in South Australia. The samples examined were collected from the surface to the depth of 380 feet. A description of the bore and detailed report of the microscopic examination of the bore samples are given in this report.

Tags: AU-SA, GA Publication, Geology, Published_External, Record, palaeontology
Organization: Geoscience Australia Data
Proposed dam site on Coree Creek

The area with which this report deals is situated on the upper reaches of Coree Creek, just below its junction with Condor Creek. Two possible dam sites were examined on Coree Creek, a quarter of a mile below Condor Creek. Mapping, physiography, general geology, structural geology, engineering geology, and sources of aggregate and sand are discussed. A petrological appendix is included.

Tags: AU-ACT, GA Publication, Geology, Published_External, Record, energy infrastructure, geology, structural geology
Organization: Geoscience Australia Data
Report on an examination of fossils from the Portland area, Southwestern Victoria, collected by Dr Boutakoff

This collection of fossils from the Portland area consists chiefly from mollusca, but where a small portion of sediment was attached to the fossils, it was removed and washed down for micro-examination. The number given to each sample refers to the registered number in the Victorian Geological Survey Collection. The results of the examination are recorded in this report.

Tags: AU-VIC, GA Publication, Geology, Published_External, Record, palaeontology
Organization: Geoscience Australia Data
Report on geophysical survey of Chilcot copper mine

The Chilcot copper mine is situated 15 miles south-south-west from Orange, from which it may be reached by reasonably good road. It was examined during 1942 by Dr. N.H. Fisher, Chief Geologist, Mineral Resources Survey, who recommended that a geophysical survey be made to search for additional ore shoots along the lode channel (1942/020). The geophysical survey was made during the three weeks ending 19th December. Operations were commenced over the area north-east of the mine, extending a distance of 550 feet from the mine, thus covering the part favoured by Dr. Fisher for extension of the lode channel. Later the survey was extended a similar distance to the south-west and the north-eastern part was extended a further 150 feet. Methods used comprised geomagnetic, spontaneous, polarisation, electro-magnetic and potential ratio. Traverses were placed at 50 feet intervals and observations by the various methods were made at intervals of 25 feet and, in some parts, at closer intervals. The results of this survey are discussed herein.

Tags: AU-NSW, GA Publication, Geophysics, Published_External, Record, geophysics
Organization: Geoscience Australia Data
Geological report on the Everton molybdenite-bearing area, Victoria

The Everton molybdenite-bearing area was examined by N.H. Fisher and H.B. Owen on June 16th-19th and June 23rd, and again by N.H. Fisher on August 17th. All accessible underground workings and the surface in the immediate vicinity of the mines were mapped. The history, general geology, and economic geology of the area are described in this report. A resume of the ore reserves is given, together with recommendations for the future production of molybdenite at Everton.

Tags: AU-VIC, GA Publication, Geology, Published_External, Record, geology, mineral deposits, resource assessment
Organization: Geoscience Australia Data
Geological notes on the proposed sites for a national reserve at Tidbinbilla and a zoological park in Canberra

A site for a National Park Reserve is proposed at the head of the Tidbinbilla River, and a Zoological Park is planned, within the city limits, between Yarralumla Nursery and the Molonglo River. The Department of the Interior has requested geological information on these sites with special reference to supply of building stone. The geology of the proposed sites is described in this report. Possible sources of building stone in the vicinity of these sites are considered.

Tags: AU-ACT, GA Publication, Geology, Published_External, Record, geology, infrastructure, topography
Organization: Geoscience Australia Data
Application of gold fineness to the search for ore

It has been fairly firmly established that the fineness of the gold in any ore deposit varies with the depth from the surface at which the deposit was formed and as a corollary to this, that it is dependent upon the temperature and pressure at the time of deposition. This relationship is such that, under certain conditions, the gold fineness, taken into consideration with other recognised criteria, furnishes a very sensitive and reliable guide to the relative temperature of ore formation, at least within the epithermal and the upper part of the mesothermal range. The definition, determination, relation to deposits, and application of gold fineness are discussed in this report.

Tags: GA Publication, Geology, Published_External, Record, mineralogy, minerals, ore
Organization: Geoscience Australia Data
Exploring for the Future—Summary of hydrogeological findings in the Ti Tree Basin (Report 3), Northern Territory

This report presents key results from the Ti Tree Basin project completed as part of Exploring for the Future (EFTF)—an eight year, $225 million Australian Government funded geoscience data and information acquisition program focused on better understanding the potential mineral, energy and groundwater resources across Australia.
Hydrogeological data acquisition and interpretation in the Ti Tree Basin, Northern Territory, was undertaken by Geoscience Australia as part of the EFTF Program. Located ~150 km north of Alice Springs, the Cenozoic basin hosts regionally significant groundwater resources, relied upon by communities, irrigators and pastoralists. Although the basin has been extensively studied over several decades, critical information gaps still remain, particularly for the deep groundwater system (&gt;80 m depth). Work combining new geophysical and hydrochemical data with pre-existing datasets has revealed a more complex basin hydrogeology. Mapping based on airborne electromagnetics (AEM) has identified complex structural controls on the distribution of the deep basin sequence, with consequences for aquifer compartmentalisation, regional groundwater flow and aquifer connectivity. The mapping also shows where the basin sediments are much thicker than previously drilled. The hydrochemical assessment highlighted the complexity in groundwater recharge mechanisms, showing that the rainfall threshold for effective recharge and the role of evaporation are not consistent across the floodout zones in the basin. 
The EFTF products provide guidance for future hydrogeological investigations. In particular, there is evidence from historic drilling for potentially useful groundwater resources in the underexplored deep basin sequence. The EFTF program has expanded the knowledge base and datasets for the Ti Tree Basin. Collectively, these are valuable assets not just for basin groundwater management but also for the broader understanding of groundwater resources and processes in central Australia.

Tags: AEM, EARTH SCIENCES, EFTF, Exploring For The Future, Published_External, Ti Tree Basin, groundwater, hydrochemistry
Organization: Geoscience Australia Data
Geological report of the Great Central copper mine, Mount Hope (revised)

During July 12th-27th an initial examination and mapping of the suface and underground workings were carried out at the Great Central mine. A further examination was made of the surface of the mine on August 26th-27th. At the time of this second visit sampling had exposed fresh faces along most of the drives and crosscuts, and workings in McKenzie's and West Shafts not previously accessible were inspected.

Tags: AU-NSW, GA Publication, Geology, Published_External, Record, geology, mineral deposits, mining
Organization: Geoscience Australia Data
Geological observations on Heard Island (Geological observations on Heard and Macquarie Islands)

During the summer of 1947, an expedition was despatched to Heard Island with the object of landing a party to spend about twelve months there. Geological work was undertaken by the writer. The results of this work are recorded in this report. These results include observations on the geomorphology of the island, and a description of the xenolithic ejectamenta collected from the tuffs of Rogers Head and Rogers Head Peninsula.

Tags: GA Publication, Geology, HM, Published_External, Record, geology, geomorphology, petrology, volcanology
Organization: Geoscience Australia Data
The Oakland - Coorabin coalfield

Black coal of Permian age has been found near Oaklands and Coorabin in the Riverina District, New South Wales. The coal is low-grade compared with the bituminous coals of Permian age at Newcastle, but has significance due to its situation in the south-western part of New South Wales, near the Murrumbidgee and Murray irrigation areas, and not far from the Victorian border. This report has been compiled mainly from field observations and from the files of the Bureau. The report gives a broad overview of the situation of the field and aspects of geology. The discovery, development, and workings of the coalfield are described. The characteristics of the coalfield are discussed, including petrography, the quality of the coal, the presence of water, and the extent of the field. Extensive data on the shafts and bores are appended. Accompanying geological plans are included.

Tags: AU-NSW, GA Publication, Geology, Published_External, Record, commodities, geology, mineral deposits, mining, petrography, resource assessment, stratigraphy, structural geology, topography
Organization: Geoscience Australia Data
Geological observations during a journey to eastern Jervois Range 5449 to 13449

The present author accompanied Mr. R.W. Coxon, Director, Mines Department, Alice Springs, and Mr. S.M. Sneddon, Mines Inspector, Alice Springs, as geologist on their journey for road survey and inspection in the mining area of "Tom Hanlon's Camp" in the Eastern Jervois Ranges. The author's observations of the metamorphosed formations, the Oorabra Creek and Eastern Jervois Range areas, and the sandstones south of Alice Springs are recorded in this report.

Tags: AU-NT, GA Publication, Geology, Published_External, Record, geology, observations
Organization: Geoscience Australia Data
Exploring for the Future – Petrology release of NDI Carrara 1, South Nicholson region, Northern Territory

NDI Carrara 1 is a deep stratigraphic drill hole (~1751m) completed in 2020 as part of the MinEx CRC National Drilling Initiative (NDI) in collaboration with Geoscience Australia and the Northern Territory Geological Survey. It is the first test of the Carrara Sub-basin, a depocentre newly discovered in the South Nicholson region based on interpretation from seismic surveys (L210 in 2017 and L212 in 2019) recently acquired as part of the Exploring for the Future program. The drill hole intersected approximately 1100 m of Proterozoic sedimentary rocks uncomformably overlain by 630 m of Cambrian Georgina Basin carbonates.
This report presents the petrology conducted on 50 selected thin sections of NDI Carrara 1 undertaken by Microanalysis Australia (under contract to Geoscience Australia as part of the Exploring for the Future program).

Tags: Barkly-Isa-Georgetown, EARTH SCIENCES, EFTF, Exploring for the Future, NDI Carrara 1, Petrology, Published_External, Sedimentology
Organization: Geoscience Australia Data
Coal resources of New South Wales (Revised October 1950)

This report has been written as the result of conversations between the writers and officers of the Joint Coal Board in Sydney, Lithgow and Cessnock, and with similar assistance from the Geological Survey of New South Wales. The writers visited the Western and Northern coalfields during August and inspected most of the operating open-cuts. The results of the enquiries are presented in five tables which are set out at the end of this report and which contain, in statistical form, the greater part of all the information elicited. The text matter of the report is explanatory of the tables and also discusses the methods which have been used in arriving at the estimates of coal reserves. In the ensuing discussion emphasis has been laid on coal reserves available for open-cut mining, and all enquiries directed to the Join Coal Board were concerned with open-cut coal only.

Tags: AU-NSW, GA Publication, Geology, Published_External, Record, commodities, mineral deposits, resource assessment
Organization: Geoscience Australia Data
New SHRIMP U–Pb geochronology of in situ monazites from the East Tennant area, Northern Territory: Results from the MinEx CRC National Drilling Initiative program

This Record presents new Sensitive High Resolution Ion Micro Probe (SHRIMP) in situ monazite U–Pb geochronological results from the East Tennant area that were obtained in March 2022 as part of Geoscience Australia’s (GA) Exploring for the Future (EFTF) program. Three samples were targeted for monazite geochronology in order to constrain the timing of metamorphism and ductile deformation in the East Tennant area. 
Monazites in cordierite schist from the Alroy Formation in drill hole NDIBK01 (NDIBK01.300) yielded a weighted mean 207Pb/206Pb age of 1843.6 ± 6.1 Ma (95% confidence). Paragneiss from the Alroy Formation in drill hole NDIBK10 (NDIBK10.009) yielded monazites that returned a weighted mean 207Pb/206Pb crystallisation age of 1843.5 ± 5.1 Ma. Sparse monazites in sample NDIBK04.300, a garnet phyllite from drill hole NDIBK04, yielded a weighted mean 207Pb/206Pb crystallisation age of 1831 ± 28 Ma. These ages, from samples distributed throughout the East Tennant area, are interpreted to constrain the timing of an episode of low pressure, medium-grade metamorphism and coeval deformation.

Tags: APPLIED MATHEMATICS, Barkly-Isa-Georgetown, EARTH SCIENCES, EFTF, Exploring for the Future, Published_External
Organization: Geoscience Australia Data
Blue asbestos in Australia

Two earlier reports on this subject dealt with this industry on the basis of information then available and virtually omitted from consideration the activities of the producer and consumer subsidiaries of the Colonial Sugar Refining Company. This company has now supplied detailed information, particularly on its plans for production and it is therefore necessary to review the industry afresh. The production and consumption of asbestos in Australia are discussed in this report.

Tags: AU, GA Publication, Geology, Published_External, Record, industry, mineral deposits
Organization: Geoscience Australia Data