AndreaBozzo/ceres-open-data-index huggingface dataset:
3D Geophysical Inversion Modelling of the Wallaby Plateau: Evidence for Continental Crust and Seaward-Dipping Reflectors

The Wallaby Plateau is a bathymetric high off the west coast of Western Australia. It is considered a frontier region as little is known about the subsurface geology. To further investigate the rock properties in this region, 3D inversion models of density and magnetic susceptibility were generated, from gravity and magnetic data respectively, using a model-based trend removal method. Inversions were performed using UBC-GIF software on the National Computational Infrastructure's supercomputer facility to generate high-resolution (~7.56 million cells), regional-scale (550 x 550 x 25 km volume) models. Two cores of relatively low density, similar to continental crust, are identified across the Wallaby Plateau in the 3D density model. Divergent dipping reflector sequences, identified in seismic interpretation, tend to dip away from the zones of interpreted continental crust and also correlate well with bodies of high magnetic susceptibility identified in the 3D magnetic susceptibility model. Together, this suggests that the divergent dipping reflector sequences are similar to seaward-dipping reflector sequences of volcanic rift margins.

Tags: AU-WA, Earth Sciences, GA Publication, Published_External, Record
Organization: Geoscience Australia Data
Warregal 1:100 000 unpublished topographic map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Tags: 100K unpublished, AU-SA, Published_External, Topographic Map, Topology
Organization: Geoscience Australia Data
Ernest Giles Range Gravity Survey 1997, WA, A54824 (P199764), 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 Ernest Giles Range Gravity Survey 1997, WA, A54824 (P199764) contains a total of 179 point data values acquired at a spacing between 1000 and 4000 metres. The data is located in WA and were acquired in 1997, under project No. 199764 for Western Mining Corporation 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 199764
Organization: Geoscience Australia Data
Increasing the prospectivity of northern Australia [Carr] and Gross depositional environment mapping, offshore Otway Basin [Abbott]

Exploring for the Future (EFTF) is a multiyear (2016–2024) initiative of the Australian Government, conducted by Geoscience Australia. This program aims to improve Australia’s desirability for industry investment in resource exploration of frontier regions across Australia. This paper will focus on the science impacts from the EFTF program in northern Australia derived from the acquisition and interpretation of seismic surveys, the drilling of the NDI Carrara 1 and also complementary scientific analysis and interpretation to determine the resource potential of the region. This work was undertaken in collaboration with the Northern Territory Geological Survey, the Queensland Geological Survey, AuScope and the MinEx CRC. These new data link the highly prospective resource rich areas of the McArthur Basin and Mt Isa Province via a continuous seismic traverse across central northern Australia. The Exploring for the Future program aims to further de-risk exploration within greenfield regions and position northern Australia for future exploration investment. [Carr]
The Sherbrook Supersequence is the youngest of four Cretaceous supersequences in the Otway Basin and was deposited during a phase of crustal extension. This presentation shows how a basin-scale gross depositional environment (GDE) map for the Sherbrook SS was constructed, the significance of the map for the Austral 3 petroleum system, and why GDE mapping is important for pre-competitive basin studies at Geoscience Australia.  [Abbott]

Tags: EARTH SCIENCES, EFTF - Exploring for the Future, Mineral exploration, Otway Basin, Petroleum exploration, Published_External, Wednesday Seminar
Organization: Geoscience Australia Data
NSW Geol. Survey, Tamworth, NSW, 1980 (P504), 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 NSW Geol. Survey, Tamworth, NSW, 1980 (P504), radiometric line data, AWAGS levelled were acquired in 1980 by the NSW Government, and consisted of 10075 line-kilometres of data at 1500m 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, NASVD, NSW, Published_External, airborne digital data, gamma-ray, geophysical survey, geophysics, line, potassium, radiometrics, spectrometry, survey 504, thorium, uranium, vector
Organization: Geoscience Australia Data
National ASTER Map MgOH group content


Band ratio: (B6+B9/(B7+B8) Blue is low content, Red is high content (potentially includes: calcite, dolomite, magnesite, chlorite, epidote, amphibole, talc, serpentine)
Useful for mapping: (1) "hydrated" ferromagnesian rocks rich in OH-bearing tri-octahedral silicates like actinolite, serpentine, chlorite and talc; (2) carbonate-rich rocks, including shelf (palaeo-reef) and valley carbonates(calcretes, dolocretes and magnecretes); and (3) lithology-overprinting hydrothermal alteration, e.g. "propyllitic alteration" comprising chlorite, amphibole and carbonate. The nature (composition) of the silicate or carbonate mineral can be further assessed using the MgOH composition product.


Tags: Earth Observations from Space, Earth Sciences, HVC_144626, NCI, Published_External, Remote Sensing, Satellite imagery, mineralogy
Organization: Geoscience Australia Data
Burnie 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-TAS, Published_External, Topographic Map, Topology, topography
Organization: Geoscience Australia Data
Goomadeer 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-NT, Published_External, Topographic Map, Topology, topography
Organization: Geoscience Australia Data
Aspects of stratigraphy and structure in relation to the Woolpunda Groundwater Interception Scheme, Murray Basin, South Australia

Micropalaeontological and biostratigraphic studies have been used to assist understanding of the stratigraphic and structural context of groundwater flow systems in the vicinity of the Woolpunda Groundwater Interception Scheme (WGIS) - a major area of saline groundwater discharge to the River Murray in the western Murray Basin.  Structure was defined by tracing several stratigraphic markers in the Late Oligocene to Middle Miocene succession, including the Lepidocyclina foraminiferal zone and three clay or marl units of low permeability. A cross-section through the upper part of the Cainozoic sequence illustrates east- west arching gentle Middle to Late Miocene folding, and intermittent mild Cainozoic uplift.  Arching and doming across the WGIS area is confirmed by a structure contour plot on top Renmark Group, and by limited drilling in the deeper Eocene and Cretaceous sediments.  The arched structure apparently relates to draping of the Tertiary succession over a high of pre-Tertiary rocks related to the Hamley Fault.  This high acts as a permeability barrier to the Renmark Group confined aquifer which thins significantly over it, promoting upward leakage into the water table aquifer, with resultant high saline discharge to the River Murray.

Tags: Earth Sciences, GA Publication, Journal, Published_External, SA
Organization: Geoscience Australia Data
Earthquake monitoring (primary)

This short video by the Geoscience Australia Education Team is targeted at primary students but is suitable for a wider audience. This video introduces the concepts of earthquake monitoring using seismometers and seismographs. It also features the National Earthquake Alert Centre. Viewers are asked to try making earthquakes at home using the accelerometers in their smartphones. 
For more education resources visit ga.gov.au/education.

Tags: EARTH SCIENCES, Earthquakes, Published_External
Organization: Geoscience Australia Data
A Revised Structural Framework for Frontier Basins on the Southern and Southwestern Australian Continental Margin

The southern and southwestern continental margin of Australia includes vast, under-explored areas underlain by sufficiently thick sedimentary strata (&gt;3 km) to generate substantial amounts of hydrocarbons if source rocks are present. One impediment to petroleum exploration has been a limited understanding of the geological framework of the basins in this region. The Bight and Mentelle basins, and the offshore component of the Perth Basin, are remapped within the southern and southwestern margin. Each basin has a unique structural architecture that formed during different stages in the break-up of Australia, Antarctica and Greater India. The Bight Basin extends for about 2100 km along the southern margin, and formed during rifting between Australia and Antarctica in the Middle Jurassic-Late Cretaceous. Sub-divisions of the Bight Basin include the previously recognised Eyre, Ceduna and Recherche sub-basins, along with a series of remapped Middle Jurassic-Early Cretaceous half-graben systems - the Duntroon, Bremer and Denmark sub-basins - and Cretaceous platform covers, the Madura and Couedic shelves. The Perth Basin extends for approximately 1300 km along the southwestern continental margin, and formed during rifting between Australia and Greater India in the Permian-Early Cretaceous. A new sub-division of the Perth Basin, the Zeewyck Sub-basin, is a deep water rift basin that formed either during or just following Early Cretaceous (Valanginian) break-up. The Mentelle Basin, located between the Naturaliste Plateau and Leeuwin Complex, is a recently defined frontier basin that formed near a triple junction between Australia, Antarctica and Greater India during the Middle Jurassic-Early Cretaceous.

Tags: AU-SA, AU-WA, Earth Sciences, GA Publication, Published_External, Record, sedimentary basins
Organization: Geoscience Australia Data
AUSGeoid98 v.1.0 data files:  (si57-03)

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
Artesian Range 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
Forbes Detail, NSW, 1993 (P565), 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 Forbes Detail, NSW, 1993 survey were acquired in 1993 by the NSW Government, and consisted of 49055 line-kilometres of data at a line spacing between 200m and 200m, 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, NSW, Published_External, airborne digital data, geophysical survey, geophysics, line, magnetic, magnetics, magnetism and palaeomagnetism, survey 565, vector
Organization: Geoscience Australia Data
Bago Maragle ppm uranium grid geodeticg

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 uranium grid has a cell size of 0.00042 degrees (approximately 42m) and shows uranium element concentration of the Bago/Maragle State Forest, NSW, 1996 in units of parts per million (or ppm). The data used to produce this grid was acquired in 1996 by the NSW Government, and consisted of 6694 line-kilometres of data at 200m line spacing and 60m terrain clearance.

Tags: Australia, EARTH SCIENCES, Earth sciences, GADDS2.0, NASVD, NCI, NSW, Published_External, U, airborne digital data, gamma-ray, geophysical survey, geophysics, grid, rad, radiometrics, raster, spectrometry, survey 659, uranium
Organization: Geoscience Australia Data
GSWA Southern Cross uranium grid geodetic

This GSWA Southern Cross uranium grid geodetic is an airborne-derived radiometric uranium window countrate grid for the Southern Cross, WA, 1995-96 (Fugro) survey. 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 uranium (K), uranium (U) and uranium (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 GSWA Southern Cross uranium grid geodetic has a cell size of 0.0005 degrees (approximately 51m). The data are in units of counts per second (or cps). The data used to produce this grid was acquired in 1995 by the WA Government, and consisted of 42693 line-kilometres of data at 100m line spacing and 50m terrain clearance.

Tags: Australia, EARTH SCIENCES, Earth sciences, GADDS2.0, NASVD, NCI, Published_External, U, WA, airborne digital data, gamma-ray, geophysical survey, geophysics, grid, rad, radiometrics, raster, spectrometry, survey 1051, uranium, window countrate
Organization: Geoscience Australia Data
BHP Tal Tal, 1996 Gravity Survey, Qld (P199698), 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 BHP Tal Tal, 1996 Gravity Survey, Qld (P199698) contains a total of 1303 point data values acquired at a spacing between 75 and 500 metres. The data is located in QLD and were acquired in 1996, under project No. 199698 for BHP Group Ltd.

Tags: Australia, EARTH SCIENCES, Earth sciences, GADDS2.0, NCI, Published_External, QLD, geophysical survey, geophysics, gravity, ground digital data, point, point located data, survey 199698
Organization: Geoscience Australia Data
Cooroorah Anticline Gravity Survey, Central Queensland, 1959 By Associated Freney Oil Fields NL

This report covers gravity survey work conducted by Mines Administration Pty. Limited for Associated Freney Oil Fields N. L. during the period 20th June to 31st July 1959. The survey was conducted in conjunction with the seismic survey carried out by the Bureau of Mineral Resources. The purpose of the work was to define at depth the limits of the Cooroorah Anticline, Central Queensland.
Gravity values were observed and plotted over the whole of the Cooroorah area, and, in particular, over the Cooroorah Anticline. These values indicate a broad gravity '''low'' south of the Mackenzie River and west of Bluff. This is confirmed by the previous regional gravity survey of 1958.
Over the Big Churchyard Culmination of the Cooroorah Anticline the gravity gradient reverses. The axis of this reversal is displaced approximately 1 1/4 miles north-west from the axis of the Cooroorah Anticline. The seismic survey shows that the structure at depth is closely conformable with the surface structure so it appears from this displacement of gravity and geological axes that the gravity "high" is due to some deep-seated density variation.

Tags: AU-QLD, Earth Sciences, GA Publication, Other Publication, Published_External, petroleum exploration
Organization: Geoscience Australia Data
Yeeda 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
Camp Inlet 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
Ayr 1:250 000 GIS Dataset

This data is part of the series of maps that covers the whole of Australia at a scale of 1:250 000 (1cm on a map represents 2.5km on the ground) and comprises 513 maps. This is the largest scale at which published topographic maps cover the entire continent. 
Data is downloadable in various distribution formats.

Tags: 250K scale, AU-QLD, Earth Sciences, GIS Dataset, Published_External, dataset, topography
Organization: Geoscience Australia Data
Talk presented (Blewett et al, 2004d) at the SEG meeting in September 2004 in Perth

Talk presented (Blewett et al., 2004d) at the SEG meeting in September 2004 in Perth.

Tags: AU-WA, Earth Sciences, PMD*CRC Publication, Project Y2 - Appendix 8, Published_External, pmd*CRC
Organization: Geoscience Australia Data