AndreaBozzo/ceres-open-data-index huggingface dataset:
Western Tasmania, Tas, 2001 (WTRMP Area C) (P825), 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 Western Tasmania, Tas, 2001 (WTRMP Area C) survey were acquired in 2001 by the TAS Government, and consisted of 44149 line-kilometres of data at 200m 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, Published_External, TAS, airborne digital data, geophysical survey, geophysics, line, magnetic, magnetics, magnetism and palaeomagnetism, survey 825, vector
Organization: Geoscience Australia Data
GSWA Charnley Potassium 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.
This radiometric potassium grid has a cell size of 0.00042 degrees (approximately 45m) and shows potassium element concentration of the West Kimberley (Prince Regent - Montague - Charnley), WA,2011 in units of percent (or %). The data used to produce this grid was acquired in 2011 by the WA Government, and consisted of 145084 line-kilometres of data at a line spacing between 200m and 800m, and 50m terrain clearance.

Tags: Australia, EARTH SCIENCES, Earth sciences, GADDS2.0, K, NCI, Published_External, WA, airborne digital data, gamma-ray, geophysical survey, geophysics, grid, potassium, rad, radiometrics, raster, spectrometry, survey 1236
Organization: Geoscience Australia Data
Gairdner 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
Mineralogy and chemistry of weathered and parent sedimentary rocks in southwest Queensland

Weathered profiles and parent rocks in the Queensland part of the Eromanga Basin were investigated using geochemical and clay mineral techniques. Approximately 170 rock samples were analysed and 65 thin sections described from Winton and Eyre Formations, Morney profile, Canaway profile, Curalle silcrete profile and Haddon silcrete. Rock samples were obtained by shallow stratigraphic core-drilling and from measured outcrop sections. The results obtained show marked differences, between the parent rocks and weathered profiles, and in some instances demonstrate gradational compositional changes within profiles. The Winton Formation contains montmorillonite with lesser amounts of kaolinite, illite, randomly interstratified clays and chlorite. Weathered profiles developed on it (Morney and Canaway profiles) contain kaolinite and lesser illite. The quartzose Eyre Formation is kaolinitic except for the upper part, in which small amounts of montmorillonite occur. Silcrete developed on this formation (Curalle silcrete profile) and subsurface silcrete (Haddon silcrete) are chemically similar and contain kaolinite, illite, and small quantities of montmorillonite. SiIica-enriched zones of all profiles examined show evidence of slight enrichment of titanium.

Tags: Earth Sciences, GA Publication, Journal, Published_External, QLD
Organization: Geoscience Australia Data
National Geochemical Survey of Australia: Field Manual

The National Geochemical Survey of Australia project represents an essential component of the Australian Government's Onshore Energy Security Initiative. The national geochemical survey involves the use of field-tested methods for collection and analysis of transported regolith samples representative of catchments covering most of Australia. The project is a collaboration between Geoscience Australia and State and Northern Territory geoscience agencies, which will provide an internally consistent geochemical dataset useful for calibration and ground-truthing of airborne radiometrics surveys. The survey also will help to fill gaps in current airborne radiometrics and geochemical coverages of Australia, provide multi-element characterisation and ranking of radiometric anomalies and aid in first-order investigation of the nature of geothermal hot-spots. As a result it will support and add value to numerous other Onshore Energy Security Initiative projects and have wider applications in mineral exploration and in environmental assessment and management. This report details the methodology underpinning the determination of the theoretical sampling points using terrain and hydrological analysis; and the protocols for sample collection. It will be used for knowledge transfer during training sessions for the State and Northern Territory field parties who also will receive field equipment and consumables which will ensure there is consistent sampling throughout the project. A digital data entry template has been designed to enable efficient and consistent in-field data capture, which also will streamline data entry into Geoscience Australia's corporate databases.

Tags: AEM, AU, Airborne Electromagnetics, Earth Sciences, GA Publication, Published_External, Record, geochemistry, regolith
Organization: Geoscience Australia Data
Forbes NSW 1:250 000 simplified basement geology

This map presents an interpretation of the basement geology of the Forbes 1:250 000 sheet area, based on integration of airborne geophysics, gravity data and geological mapping 2000, Forbes Second Edition (1:250 000 geological map S155-7), Australian Geological Survey Organisation, Canberra/Geological Survey of New South Wales, Orange.

Tags: 250K scale, AU-NSW, Geological Map, Geology, Published_External, geology, mapping
Organization: Geoscience Australia Data
Strategy 2028

Geoscience Australia is Australia’s Earth science public sector organisation, recognised for its expert data capabilities and high level of expertise. As the nation’s trusted advisor on geology and geography the organisation is the premium provider of data, science and analysis for decision makers. 
Internally, Geoscience Australia is currently targeting and refining its core capabilities in order to establish and clearly articulate our value proposition and service offering to stakeholders.

Tags: EARTH SCIENCES, Published_External
Organization: Geoscience Australia Data
SWCC P1177 Dumbleyung detailed tmi grid geodetic

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.
This SWCC P1177 Dumbleyung detailed tmi grid geodetic has a cell size of 0.00021 degrees (approximately 21m). The units are in nanoTesla (or nT). The data used to produce this grid was acquired in 2008 by the WA Government, and consisted of 75805 line-kilometres of data at a line spacing between 100m and 400m, and 60m terrain clearance.

Tags: Australia, EARTH SCIENCES, Earth sciences, GADDS2.0, NCI, Published_External, TMI, WA, airborne digital data, geophysical survey, geophysics, grid, mag, magnetics, magnetism, palaeomagnetism, raster, survey 1177, total magnetic intensity
Organization: Geoscience Australia Data
Enhanced barest earth Landsat imagery for soil and lithological modelling

Remotely sensed datasets provide fundamental information for understanding the chemical, physical and temporal dynamics of the atmosphere, lithosphere, biosphere and hydrosphere. Satellite remote sensing has been used extensively in mapping the nature and characteristics of the terrestrial land surface, including vegetation, rock, soil and landforms, across global to local-district scales. With the exception of hyper-arid regions, mapping rock and soil from space has been problematic because of vegetation that either masks the underlying substrate or confuses the spectral signatures of geological materials (i.e. diagnostic mineral spectral features), making them difficult to resolve. As part of the Exploring for the Future program, a new barest earth Landsat mosaic of the Australian continent using time-series analysis significantly reduces the influence of vegetation and enhances mapping of soil and exposed rock from space. Here, we provide a brief background on geological remote sensing and describe a suite of enhanced images using the barest earth Landsat mosaic for mapping surface mineralogy and geochemistry. These geological enhanced images provide improved inputs for predictive modelling of soil and rock properties over the Australian continent. In one case study, use of these products instead of existing Landsat TM band data to model chromium and sodium distribution using a random forest machine learning algorithm improved model performance by 28–46%.
Citation: Wilford, J. and Roberts, D., 2020. Enhanced barest earth Landsat imagery for soil and lithological modelling. In: Czarnota, K., Roach, I., Abbott, S., Haynes, M., Kositcin, N., Ray, A. and Slatter, E. (eds.) Exploring for the Future: Extended Abstracts, Geoscience Australia, Canberra, 1–4.

Tags: EARTH SCIENCES, EFTF, Exploring for the Future, Landsat TM, Mineralogy, Published_External, Rock, Satellite imagery, Soils, Surface, remote sensing
Organization: Geoscience Australia Data
AUSGeoid98 v.1.0 data files:  (sk56-06)

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
Development of a Web Portal for Australian Ground-Motion Data

Earthquake recordings in Australia are a crucial input to a wide range of applications in seismology and earthquake engineering. In particular, earthquake recordings are critical for robust estimation of earthquake magnitudes, earthquake hazard assessment, and dynamic structural analysis. The expansion of permanent monitoring networks (e.g., Australian National Seismograph Network) and deployment of temporary seismic networks in Australia over the past few decades has resulted in a significant increase in the number of earthquake ground motion recordings, particularly for moderate magnitude events.  The volume of new data means there is now a need to store these recorded data and metadata in standard format in a comprehensive, searchable, national ground motion database. Recently, we developed a ground-motion database for earthquakes in cratonic regions of western and central Australia, as well as non-cratonic southeastern Australia. We also developed an associated graphical user interface tool to process and visualise the ground-motion data. This tool can also store the processed waveforms in the database. Work is ongoing at Geoscience Australia to develop a web delivery portal to provide end-users direct access to Australian ground-motion data. This web-based portal would enable end-users to search the ground-motion database based on key earthquake, station, and waveform parameters in a user-friendly platform. Providing public access to these data will facilitate greater use of ground-motion recordings to inform various applications including seismic hazard assessment and dynamic structural analysis.
Presented at the 2023 Australian Earthquake Engineering Society (AEES) Conference

Tags: EARTH SCIENCES, Published_External, ground-motion database, waveform processing, web service
Organization: Geoscience Australia Data
Wandoan 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
The seismic zone of the Papuan Fold Belt

Improved regional seismograph coverage in the 1970s has enhanced the resolution of the seismicity of the southern highlands of Papua New Guinea. Two zones can be defined. The Southern Highlands Seismic Zone follows the Papuan Fold Belt and extends from Kerema on the Gulf of Papua through the Star Mountains region into Irian Jaya. A second zone, the Mount Hagen Seismic Zone, plunges to the north-northeast from the Southern Highlands Seismic Zone south of Mount Hagen to intersect the intermediate-depth seismicity beneath the Ramu-Markham Valley. The southern highlands earthquakes reflect continuing Pliocene-Quaternary thrust faulting in the crust of the Indo-Australian Plate , brought about by the collision of the Indo-Australian and South Bismarck Plates over the sinking Solomon Sea Plate. Relief of compressive stress is through fracturing of the continental plate margin.  The zone of fracture is now manifest in the Papuan Fold Belt. Seismic risk in the Southern Highlands Seismic Zone is less than that of the north coast, New Britain, and Bougainville, but is still high. The once-a-year largest earthquake is of magnitude 4.7, the ten-year earthquake magnitude 6.2, and the 30-year earthquake magnitude 6.9, which compare with the Californian figures of 5.7, 6.9, and 7.4, respectively. Large earthquakes are expected to occur along the zone in the future and their effects could be severe.

Tags: Earth Sciences, GA Publication, Journal, PNG, Published_External
Organization: Geoscience Australia Data
Spencer - ground elevation geoid grid (radar)

Digital Elevation data record the terrain height variations from the processed point- or line-located data recorded during a geophysical survey. This Spencer - ground elevation geoid grid (radar) is elevation data for the Spencer Airborne Magnetic Radiometric and DEM survey, SA, 2018. This survey was acquired under the project No. 1310 for the geological survey of SA. The grid has a cell size of 0.0004 degrees (approximately 41m).  This grid contains the ground elevation relative to the geoid for the Spencer Airborne Magnetic Radiometric and DEM survey, SA, 2018. 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, Published_External, SA, digital data, geoid, geophysical survey, geophysics, grid, raster, survey 1310, terrain
Organization: Geoscience Australia Data
AUSGeoid98 v.1.0 data files: Weipa (sd54-03)

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
Tasmania Offshore Area4 magnetic 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.
This radiometric uranium grid has a cell size of 0.00083 degrees (approximately 82m) and shows uranium element concentration of the Tasmania Offshore, TAS, 1994 in units of parts per million (or ppm). The data used to produce this grid was acquired in 1994 by the TAS Government, and consisted of 93301 line-kilometres of data at a line spacing between 400m and 800m, and 130m terrain clearance.

Tags: Australia, EARTH SCIENCES, Earth sciences, GADDS2.0, NASVD, NCI, Published_External, TAS, U, airborne digital data, gamma-ray, geophysical survey, geophysics, grid, rad, radiometrics, raster, spectrometry, survey 630, uranium
Organization: Geoscience Australia Data
Project Y2 Appendix 2_3 Source of Solid Geology datasets for Norseman-Wiluna

Project Y2 Appendix 2_3 Source of Solid Geology datasets for Norseman-Wiluna

Tags: AU-WA, Earth Sciences, PMD*CRC Publication, Project Y2 - Appendix 2, Published_External, pmd*CRC
Organization: Geoscience Australia Data
Hawkstone 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
Bathurst regolith landform maps

The 1:250 000 maps show the type and distribution of 51 regolith-landform units
with unique dominant regolith-landform associations, and are a subset of the 205 
mapping units on the six 1:100 000 maps. These units are distinct patterns of
recurring landform elements with characteristic regolith associations.
Geomorphic symbols indicate the location and type of geomorphic activity.
The maps present a systematic analysis and interpretation of 1:89 000 scale 1973 
RC9 aerial photography, 1:100 000 scale topographic maps (AUSLIG), and field
mapping data.
High resolution (250m line spacing) airborne gamma-ray spectrometry and magnetics
(Geoterrex) were used where applicable

Tags: 100K scale, AU-NSW, Earth Sciences, GIS Dataset, Published_External, landforms, regolith
Organization: Geoscience Australia Data
Wingate Mountains 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