AndreaBozzo/ceres-open-data-index huggingface dataset:
BMR Research Newsletter 2

Titles in this newsletter:
New models for extension tectonics, and their implications for Australian geology
Uranium biogeochemistry in the Pine Creek Geosyncline
Honour: David Denham
Database advances in palaeomagnetic data processing
Gold mineralisation at Pine Creek
Geomagnetic observations at Cape Denison
New source for daily metal prices
Reviews: Selected recent BMR publications
New focus in the search for uranium deposits
New probe for Division of Petrology &amp; Geochemistry
New Ireland Basin petroleum prospectiveness
SG2: GSA's Special Group on Solid-Earth Geophysics
Ore distribution in the Pine Creek Geosyncline
Honour: Mike McElhinny
Developing models for gold genesis in northern Queensland
Retirement: Keith Carter
Gravity units - correction and apology
Oolong earthquake series, August-December 1984
Nappe tectonics in the Mount Isa Inlier
West Woodlark Basin: structure and potential seafloor mineralisation
Australia's first Laser Raman microprobe
Distribution of phosphate deposits around the Precambrian-Cambrian boundary
BMR's down-hole EM omnidirectional probe
Lower Proterozoic migmatites in the Mount Isa Inlier
Chemical evolution of Proterozoic felsic igneous rocks
Lachlan Fold Belt: magmatic controls of mineralisation
Terrains or terranes?
Image-processed data: key to the compilation of magnetic maps for enhanced interpretation
A new style of mineralisation iin Australia - fact or fantasy?

Tags: Earth Sciences, GA Publication, Published_External, Research Newsletter
Organization: Geoscience Australia Data
New U-Pb SHRIMP zircon geochronology from NDI drilling of the Delamerian Orogen: Loch-Lilly-Kars and Lake Wintlow Belts, southwest NSW

Geoscience Australia’s Exploring for the Future program provides precompetitive information to inform decision-making by government, community and industry on the sustainable development of Australia's mineral, energy and groundwater resources. By gathering, analysing and interpreting new and existing precompetitive geoscience data and knowledge, we are building a national picture of Australia’s geology and resource potential. This leads to a strong economy, resilient society and sustainable environment for the benefit of all Australians. This includes supporting Australia’s transition to net zero emissions, strong, sustainable resources and agriculture sectors, and economic opportunities and social benefits for Australia’s regional and remote communities. The Exploring for the Future program, which commenced in 2016, is an eight year, $225m investment by the Australian Government. 
This Record presents new U-Pb zircon geochronology from the Loch-Lilly Kars and Lake Wintlow (as described by Clark et al. 2024) Belts of the central Delamerian Orogen (Foden et al., 2020; Gilmore et al., 2023; Mole et al., 2023), performed on Geoscience Australia’s (GA) sensitive high-resolution ion microprobe (SHRIMP). The eight samples presented here (three sedimentary and five igneous rocks; Table i) were collected during Geoscience Australia’s drilling campaign across the region, which consisted of 17 drill-holes (Pitt et al., 2023), using two drilling techniques (coiled-tube rotary and conventional diamond). This work was performed as part of the MinEx CRC National Drilling initiative (NDI) and Geoscience Australia’s Darling-Curnamona-Delamerian project of the Exploring for the Future program (EFTF; https://www.eftf.ga.gov.au/). The primary aims of this drilling were to (1) understand and constrain the geology of the southern Loch-Lilly Kars Belt; and (2) assess whether Cambrian magmatic rocks continued to the south-west in the Lake Wintlow Belt, marking a possible continuation of the Stavely Belt volcanic arc rocks observed in western Victoria (Bowman et al., 2019; Lewis et al., 2016; Lewis et al., 2015; Schofield, 2018; Figure i). As both these regions are covered, this new drilling and the geochronology they allow provide the first constraints on the age of these rock units. In addition, due to the lack of surface correlation and detailed geological mapping, these units currently have no officially-defined stratigraphic nomenclature and remain unnamed. For detailed information on all drill-holes completed as part of the survey, we direct readers to the summary report by Pitt et al. (2023): eCat 148639.

Tags: Darling-Curnamona-Delamerian, Delamerian Orogen, EFTF – Exploring for the Future, Geochronology, Loch Lilly-Kars Belt, National Drilling Initiative (NDI), Published_External, SHRIMP (Sensitive High Resolution Ion Microprobe), Tasmanides, U-Pb geochronology, zircon
Organization: Geoscience Australia Data
Nyabing (Detailed West), WA, 2002 (P1044), elevation line data

The Digital Elevation Model represents ground surface topography between points of known elevation. The elevation data was calculated using the altimeters and Global Positioning System (GPS) sensor used for the benefit of airborne magnetic and radiometric data on the same survey. The elevation is the height relative to the Australian Height Datum GDA94 (AUSGEOID09). The processed elevation 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 Dumbleyung/Nyabing (Detailed), WA, 2002 survey were acquired in 2002 by the WA Government, and consisted of 11589 line-kilometres of data at 100m line spacing and 50m terrain clearance.

Tags: Australia, DEM, EARTH SCIENCES, Earth sciences, Elevation, GADDS2.0, Published_External, WA, airborne digital data, geophysical survey, geophysics, line, survey 1044, terrain, vector
Organization: Geoscience Australia Data
Kulgera West 1, NT, 1986 (P581), 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 Kulgera West, NT, 1986 survey were acquired in 1986 by the NT Government, and consisted of 14037 line-kilometres of data at 500m line spacing and 100m 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 581, vector
Organization: Geoscience Australia Data
L0064 Taree

The coverage of this dataset is over the Taree region . The C3 LAS data set contains point data in LAS 1.2 format sourced from a LiDAR ( Light Detection and Ranging ) from an ALS50 ( Airborne Laser Scanner ) sensor . The processed data has been manually edited to achieve LPI classification level 3 whereby the ground class contains minimal non-ground points such as vegetation , water , bridges , temporary features , jetties etc . Purpose: To provide fit-for-purpose elevation data for use in applications related to coastal vulnerability assessment, natural resource management ( especially water and forests) , transportation and urban planning . Additional lineage information: This data has an accuracy of 0.3m ( 95 confidence )  horizontal with a minimum point density of one laser pulse per square metre. For more information on the data's accuracy, refer to the lineage provided in the data history .

Tags: Airborne Digital Data, Earth Sciences, Published_External
Organization: Geoscience Australia Data
Mount Spurgeon 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
GSNSW Exploration NSW Area B Darling Basin total count grid geodetic

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. The terrestrial dose rate grid is derived as a linear combination of the filtered K, U and Th grids. A low pass filter is applied to this grid to generate the filtered terrestrial dose rate grid.
This GSNSW Exploration NSW Area B Darling Basin total count grid geodetic has a cell size of 0.00097 degrees (approximately 100m) and shows the terrestrial dose rate of the NSW DMR, Discovery 2000, 1994-95, AREA B, Darling Basin. The data used to produce this grid was acquired in 1995 by the NSW Government, and consisted of 150000 line-kilometres of data at 400m line spacing and 80m terrain clearance.

Tags: Australia, EARTH SCIENCES, Earth sciences, GADDS2.0, K, NASVD, NCI, NSW, Published_External, Th, U, airborne digital data, dose, dose rate, gamma-ray, geophysical survey, geophysics, grid, potassium, rad, radiometrics, raster, rate, spectrometry, survey 732, thorium, uranium
Organization: Geoscience Australia Data
Scanned 250K Geological Maps

View information on or download scanned images of all 1:250 000 scale geology maps of Australia in the AUSGIN Geoscience Portal. The images are available in 125 DPI and 250 DPI resolution JPG files.  These images include the full map surrounds and legends, and are not georeferenced.  For full instructions, consult the user guide for the Geoscience Portal.

Tags: AU-EEZ, Application, Geology, HVC_144616, Published_External, geology, map
Organization: Geoscience Australia Data
Eucla Coast, WA, 2009 (Eucla Basin 6) (P1213), elevation line data

The Digital Elevation Model represents ground surface topography between points of known elevation. The elevation data was calculated using the altimeters and Global Positioning System (GPS) sensor used for the benefit of airborne magnetic and radiometric data on the same survey. The elevation is the height relative to the Australian Height Datum GDA94 (AUSGEOID09). The processed elevation 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 Eucla Coast, WA, 2009 (Eucla Basin 6) survey were acquired in 2009 by the WA Government, and consisted of 122145 line-kilometres of data at a line spacing between 200m and 400m, and 50m terrain clearance.

Tags: Australia, DEM, EARTH SCIENCES, Earth sciences, Elevation, GADDS2.0, Published_External, WA, airborne digital data, geophysical survey, geophysics, line, survey 1213, terrain, vector
Organization: Geoscience Australia Data
Southwest Yilgarn Gravity Survey (P201561), gravity point data

Gravity data measures small changes in gravity due to changes in the density of rocks beneath the Earth's surface. 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 Southwest Yilgarn Gravity Survey (P201561) contains a total of 23762 point data values acquired at a spacing of 2000 metres. The data is located in WA and were acquired in 2015, under project No. 201561 for Geological Survey of Western Australia (GSWA).

Tags: Australia, EARTH SCIENCES, Earth sciences, GADDS2.0, NCI, Published_External, WA, geophysical survey, geophysics, gravity, ground digital data, point, point located data, survey 201561
Organization: Geoscience Australia Data
Airlie 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
Yabba Creek 19.3M and Amamoor Creek 14.7M Dam sites seismic survey, Queensland 1959

This report gives the results of seismic refraction surveys undertaken in response to an application from the Irrigation and Water Supply Commission of Queensland; the areas surveyed are the sites of two dams which are proposed for development of the Mary Valley. At the Yabba Creek 19.3M site the depth to bedrock ranges from 10 to 80 ft. A comparison with diamond drilling information shows that the seismic depth determinations are accurate to within 10 ft. The value of Poisson's ratio calculated from longitudinal and transverse wave velocities is 0.39. Assuming g bedrock density 2.7 g/cm3 the value of Young's modulus is 100000000 lb/in2. At the Amamoor Creek 14.7M site the depth to bedrock ranges from 19 to 108 ft. On the right bank (looking down stream) the calculated depths to bedrock are different when shot parallel and perpendicular to the strike of the strata; the discrepancy is explained by the phenomenon of hillside creep. On the left bank a shear zone is indicated. For the bedrock the value of Young's modulus estimated from an empirical relation ranges from 1.6 to 5.3 x 10000000 lb/in2 .Two positions for test drilling to check and control the seismic interpretation are indicated.

Tags: AU-QLD, Earth Sciences, GA Publication, Published_External, Record, seismics
Organization: Geoscience Australia Data
The Impact of Recalibrating Palynological Zones to the Chronometric Timescale: Revised Stratigraphic Relationships in Australian Permian and Triassic Hydrocarbon-bearing Basins

High-precision radiometric dating using Chemical Abrasion-Isotope Dilution Thermal Ionisation Mass Spectrometry (CA-IDTIMS) has allowed the recalibration of the numerical ages of Permian and Triassic spore-pollen palynozones in Australia. These changes have been significant, with some zonal boundaries in the Permian shifting by as much as six million years, and some in the Triassic by more than twice that. Most of the samples analysed came from eastern Australian coal basins (Sydney, Gunnedah, Bowen, Galilee) where abundant volcanic ash beds occur within the coal-bearing successions. 
The recalibrations of these widely used palynozones have implications for the dating of geological events outside the basins from where samples were obtained. Our revised dates for the Permian palynozones can now be applied to all Permian basins across Australia, including the Perth, Carnarvon, Canning and Bonaparte basins (along the western and northern continental margins), the Cooper and Galilee basins (in central Australia), and the Bowen, Gunnedah and Sydney basins (in eastern Australia). Revised regional stratigraphic frameworks are presented here for some of these basins.
The impact of an improved calibration of biostratigraphic zones to the numerical timescale is broad and far-reaching. For example, the more accurate stratigraphic ages are the more closely burial history modelling will reflect the basin history, thereby providing control on the timing of kerogen maturation, and hydrocarbon expulsion and migration. These improvements can in turn be expected to translate in to improved exploration outcomes.
We have initially focused on the Permian and provide preliminary results for the Triassic, but intend to expand recalibrations to include Jurassic, Cretaceous and Paleozoic successions beyond the Permian. Preliminary data indicates that significant changes to these calibrations are also likely.

Tags: Biostratigraphy, Bowen Basin, CA-IDTIMS, Canning Basin, Cooper Basin, Earth Sciences, Galilee Basin, Geochronology, Gunnedah Basin, Permian, Published_External, Sydney Basin, Triassic
Organization: Geoscience Australia Data
Ewan 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
AUSGeoid98 v.1.0 data files: Long Reef (sd51-08)

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, marine
Organization: Geoscience Australia Data
Paralana Fault - SADM Seismic Track, Gravity (P196768), gravity point data

Gravity data measures small changes in gravity due to changes in the density of rocks beneath the Earth's surface. 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 Paralana Fault - SADM Seismic Track, Gravity (P196768) contains a total of 41 point data values acquired at a spacing between 100 and 850 metres. The data is located in SA and were acquired in 1967, under project No. 196768 for Department of Mines and Energy South Australia (SADME).

Tags: Australia, EARTH SCIENCES, Earth sciences, GADDS2.0, NCI, Published_External, SA, geophysical survey, geophysics, gravity, ground digital data, point, point located data, survey 196768
Organization: Geoscience Australia Data
Clunes Goldfield -Tourello detailed grav survey, 1996, Vic (P199639), gravity point data

Gravity data measures small changes in gravity due to changes in the density of rocks beneath the Earth's surface. 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 Clunes Goldfield -Tourello detailed grav survey, 1996, Vic (P199639) contains a total of 383 point data values acquired at a spacing between 200 and 2000 metres. The data is located in VIC and were acquired in 1996, under project No. 199639 for Alliance Resources Limited.

Tags: Australia, EARTH SCIENCES, Earth sciences, GADDS2.0, NCI, Published_External, VIC, geophysical survey, geophysics, gravity, ground digital data, point, point located data, survey 199639
Organization: Geoscience Australia Data
Kidson Basin Detailed Gravity - EP312-316 (P198536), gravity point data

Gravity data measures small changes in gravity due to changes in the density of rocks beneath the Earth's surface. 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 Kidson Basin Detailed Gravity - EP312-316 (P198536) contains a total of 9091 point data values acquired at a spacing between 240 and 2000 metres. The data is located in WA and were acquired in 1985, under project No. 198536 for Wongela Geophysical Pty Ltd.

Tags: Australia, EARTH SCIENCES, Earth sciences, GADDS2.0, NCI, Published_External, WA, geophysical survey, geophysics, gravity, ground digital data, point, point located data, survey 198536
Organization: Geoscience Australia Data
Bauhinia Downs, NT, 2000 (P1012), radiometric line data, AWAGS levelled

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 Bauhinia Downs, NT, 2000 (P1012), radiometric line data, AWAGS levelled were acquired in 2000 by the NT Government, and consisted of 18905 line-kilometres of data at 400m line spacing and 80m 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, NASVD, NT, Published_External, airborne digital data, gamma-ray, geophysical survey, geophysics, line, potassium, radiometrics, spectrometry, survey 1012, thorium, uranium, vector
Organization: Geoscience Australia Data