AndreaBozzo/ceres-open-data-index huggingface dataset:
Central Canning, WA, 2009 (P1209), 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 Central Canning, WA, 2009 survey were acquired in 2009 by the WA Government, and consisted of 91700 line-kilometres of data at 800m line spacing and 60m terrain clearance.

Tags: Australia, DEM, EARTH SCIENCES, Earth sciences, Elevation, GADDS2.0, Published_External, WA, airborne digital data, geophysical survey, geophysics, line, survey 1209, terrain, vector
Organization: Geoscience Australia Data
GSWA Perenjori Uranium 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 0.00042 degrees (approximately 43m) and shows uranium element concentration of the Murchison 2 (Perenjori), WA, 2011 in units of parts per million (or ppm). The data used to produce this grid was acquired in 2011 by the WA Government, and consisted of 121110 line-kilometres of data at 200m 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 1238, uranium
Organization: Geoscience Australia Data
GSWA Murgoo Thorium 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 thorium grid has a cell size of 0.00042 degrees (approximately 44m) and shows thorium element concentration of the Murchison 1 (Murgoo), WA, 2011 in units of parts per million (or ppm). The data used to produce this grid was acquired in 2011 by the WA Government, and consisted of 131101 line-kilometres of data at 200m line spacing and 50m terrain clearance.

Tags: Australia, EARTH SCIENCES, Earth sciences, GADDS2.0, NASVD, NCI, Published_External, Th, WA, airborne digital data, gamma-ray, geophysical survey, geophysics, grid, rad, radiometrics, raster, spectrometry, survey 1239, thorium
Organization: Geoscience Australia Data
Helicopter Gravity Survey, WA (P196805), 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 Helicopter Gravity Survey, WA (P196805) contains a total of 2101 point data values acquired at a spacing of 11265 metres. The data is located in WA and were acquired in 1968, under project No. 196805 for Bureau of Mineral Resources (BMR).

Tags: Australia, EARTH SCIENCES, Earth sciences, GADDS2.0, NCI, Published_External, WA, geophysical survey, geophysics, gravity, ground digital data, point, point located data, survey 196805
Organization: Geoscience Australia Data
Aquatic Substrate Library - Heron Island 2004

Record for source data hosted in the National Spectral Database (NSD) Aquatic Library
For further information and instructions to access the database go to the following URL:
https://cmi.ga.gov.au/data-products/dea/643/australian-national-spectral-database

Tags: Aquatic Substrate Library, Australian National Spectral Database (NSD), Australian spectral data, EARTH SCIENCES, End-member studies, Field spectroscopy, HVC_144490, NSD Source Dataset, Published_External, Remote sensing
Organization: Geoscience Australia Data
Mount Lyndhurst Detailed Gravity (P196661), 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 Mount Lyndhurst Detailed Gravity (P196661) contains a total of 955 point data values acquired at a spacing between 55 and 6000 metres. The data is located in SA and were acquired in 1966, under project No. 196661 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 196661
Organization: Geoscience Australia Data
A new National Seismic Hazard Assessment for Australia

Geoscience Australia has released a new National Seismic Hazard Assessment for Australia — the NSHA18. The new NSHA provides an improved understanding of the seismic hazard and its uncertainties for Australia, allowing communities to be better prepared for earthquake events. Knowing with more certainty how the ground-shaking hazard varies across Australia, allows higher hazard areas to be identified for the development of mitigation strategies so communities can be more resilient to earthquake events.
Using the NSHA, decision makers can better consider:
•What this could mean for communities in those areas and whether any further action is required
•Where to prioritise further efforts
•What this could mean for insurance and reinsurance premiums
•Identify high and low hazard areas to plan for growth or investment in infrastructure.
The NSHA also provides key information to the Australian Government Building Codes Board, so buildings and infrastructure design standards can be updated to ensure they can withstand earthquake events in Australia.
This talk will talk about the key features and enhancements of the new NSHA, challenges, and what key assumptions have been contested throughout the development of this fundamental assessment for our country.
Since completing his postgraduate studies at Monash University in 2004, Trevor Allen has worked as an earthquake seismologist in Australia, Canada (NRCan) and the United States (USGS). He is currently member of Standards Australia earthquake loading subcommittee and sits on the Canadian Standing Committee on Earthquake Design. Trevor leads the development of Geoscience Australia's National Seismic Hazard Assessment.
This talk is presented as part of the Distinguished Geoscience Australia Lecturer series on 3 December 2018.

Tags: EARTH SCIENCES, National Seismic Hazard Assessment for Australia — NSHA18, Wednesday Seminar, earthquake preparation
Organization: Geoscience Australia Data
AUSGeoid98 v.1.0 data files:  (sd51-06)

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
Sentinel-2 Barest Earth imagery for soil and lithological mapping

Satellite imagery provides useful data for mapping the characteristics of exposed rock and soil. However, these materials in many environments are masked by vegetation. To address this the Sentinel-2 Barest Earth thematic product provides a national scale mosaic of the Australian continent with significantly reduced influence of seasonal vegetation cover to support enhanced mapping of soil and geology. The barest earth algorithm, operating on all available Sentinel-2 A and Sentinel-2 B observations up to September 2020, preferentially weights bare ground exposure through time to more directly map the surface mineralogy and geochemistry of soil and rock. The algorithm uses a high-dimensional weighted geometric median approach that maintains the spectral relationships across all Sentinel-2 bands building on a similar approach applied to the deeper Landsat time series archive. Both barest earth products have spectral bands in the visible near infrared and shortwave infrared region of the electromagnetic spectrum. However, the main visible and near-infrared Sentinel-2 bands have a spatial resolution of 10 meters compared to 30m for the Landsat TM equivalents. Furthermore, although the first Sentinel-2 satellite was launched in 2015 the twin orbiting satellite configuration provides shorter revisit times that increase the frequency of observations and probability of observing barer pixels amongst observations obscured by clouds and shadows. The Sentinel-2 satellite has broad application in environmental and geological sciences. The barest earth approach generates a complimentary set of spectral bands with reduced vegetation influence for more directed geological applications. We discuss the barest earth algorithm and compare non-bare and barest earth Sentinel-2 imagery. A series of enhance Sentinel-2 images are used to illustrate the potential of the barest earth datasets for mapping soil and bedrock and we summarise key band ratios that can be used as proxies for mapping surface mineralogy including iron oxides and hydroxyl minerals.

Tags: EARTH SCIENCES, EFTF, Exploring for the Future, Published_External, Regolith, Surface, geology, remote sensing, satellite imagery, spectral mapping
Organization: Geoscience Australia Data
Satellite Imagery - Canberra Bushfires - 18 January 2003

Satellite imagery is a very useful tool in managing fires and their effects. In the lead-up to the fire season, images are used to assess fuel loads and to plan access points and fire breaks. Images are also very useful in mapping the extent of fire scars and assessing damage.
Geoscience Australia acquired a number of satellite images that clearly show the effects of the fires that swept through the south-western suburbs of Canberra on 18 January.

Tags: AU-ACT, Earth Sciences, GA Publication, Published_External, Report, satellite imagery
Organization: Geoscience Australia Data
Detailed Gravity (P198151), 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 Detailed Gravity (P198151) contains a total of 2690 point data values acquired at a spacing between 750 and 950 metres. The data is located in TAS and were acquired in 1981, under project No. 198151 for Mineral Resources Tasmania (MRT).

Tags: Australia, EARTH SCIENCES, Earth sciences, GADDS2.0, NCI, Published_External, TAS, geophysical survey, geophysics, gravity, ground digital data, point, point located data, survey 198151
Organization: Geoscience Australia Data
Bindoola Creek 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
The Northwest Offshore Otway Basin Well Folio

The Otway Basin is a northwest-southeast trending rift basin which spans from onshore Victoria and South Australia into the deep-water offshore. The prospective supersequences within the basin are largely of Cretaceous age which host three possible petroleum systems (Austral 1, 2 and 3). While there is production from onshore depocentres, and the inboard Shipwreck Trough, the majority of the offshore basin remains underexplored. Recent regional studies have highlighted the need for further work across the underexplored parts of the basin and here we focus on the offshore northwest Otway Basin, integrating reinterpreted historical well data, newly acquired and recently reprocessed seismic data. This new Well Folio consists of composite logs and supporting data which includes interpreted lithologies, petrophysical analyses, the analysis of historic organic geochemistry and organic petrology. In addition, updated well markers are provided based on seismic interpretation and new biostratigraphy in key wells. This integrated study provides the basis for renewed prospectivity assessment in the northwest offshore portion of the Otway Basin.

Tags: EARTH SCIENCES, Offshore Otway Basin, Organic geochemistry and petrology, Petrophysics, Published_External, Well markers
Organization: Geoscience Australia Data
AusAEM is the worlds largest airborne electromagnetic (AEM) survey undertaken

Airborne electromagnetics surveys are at the forefront of addressing the challenge of exploration undercover. They have been essential in the regional mapping programmes to build Australia's resource potential inventory and provide information about the subsurface. In collaboration with state and territory geological surveys, Geoscience Australia (GA) leads a national initiative to acquire AEM data across Australia at 20 km line spacing, as a component of the Australian government Exploring for The Future (EFTF) program. Regional models of subsurface electrical conductivity show new undercover geological features that could host critical mineral deposits and groundwater resources. The models enable us to map potential alteration and structural zones and support environmental and land management studies. Several features observed in the AEM models have also provided insights into possible salt distribution analysed for its hydrogen storage potential. The AusAEM programme is rapidly covering areas with regional AEM transects at a scale never previously attempted. The programme's success leans on the high-resolution, non-invasive nature of the method and its ability to derive subsurface electrical conductivity in three dimensions – made possible by GA's implementation of modern high-performance computing algorithms. The programme is increasingly acquiring more AEM data, processing it, and working towards full national coverage.
This Abstract was submitted/presented to the 2023 Australian Exploration Geoscience Conference 13-18 Mar (https://2023.aegc.com.au/)

Tags: AEM, Airborne Electromagnetics, Australia's Resources Framework, Critical Minerals, EFTF - Exploring for the Future, Electrical and Electromagnetic Methods in Geophysics, Exploration, Groundwater, Published_External, Salt diaper, airborne geophysics
Organization: Geoscience Australia Data
Ryan 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-WA, Published_External, Topographic Map, Topology, topography
Organization: Geoscience Australia Data
Gas Chromatography-Mass Spectrometry (GC-MS) Biomarker Database Table

The Gas Chromatography-Mass Spectrometry (GC-MS) biomarker database table contains publicly available results from Geoscience Australia's organic geochemistry (ORGCHEM) schema and supporting oracle databases for the molecular (biomarker) compositions of source rock extracts and petroleum liquids (e.g., condensate, crude oil, bitumen) sampled from boreholes and field sites. These analyses are undertaken by various laboratories in service and exploration companies, Australian government institutions and universities using either gas chromatography-mass spectrometry (GC-MS) or gas chromatography-mass spectrometry-mass spectrometry (GC-MS-MS). Data includes the borehole or field site location, sample depth, shows and tests, stratigraphy, analytical methods, other relevant metadata, and the molecular composition of aliphatic hydrocarbons, aromatic hydrocarbons and heterocyclic compounds, which contain either nitrogen, oxygen or sulfur.

These data provide information about the molecular composition of the source rock and its generated petroleum, enabling the determination of the type of organic matter and depositional environment of the source rock and its thermal maturity. Interpretation of these data enable the determination of oil-source and oil-oil correlations, migration pathways, and any secondary alteration of the generated fluids. This information is useful for mapping total petroleum systems, and the assessment of sediment-hosted resources. Some data are generated in Geoscience Australia’s laboratory and released in Geoscience Australia records. Data are also collated from destructive analysis reports (DARs), well completion reports (WCRs), and literature. The biomarker data for crude oils and source rocks are delivered in the Petroleum and Rock Composition – Biomarker web services on the Geoscience Australia Data Discovery Portal at https://portal.ga.gov.au which will be periodically updated.

Tags: Biomarkers, Data Management And Data Science, EFTF – Exploring for the Future, Energy Systems, Exploration geochemistry, Gas chromatography-mass spectrometry (GC-MS), Geoinformatics, Geoscience data visualisation, ORGCHEM database, Onshore Energy Systems, Organic geochemistry, Published_External, Resource geoscience, Sediment-hosted energy resources, Sediment-hosted resources, Source rocks, aromatic hydrocarbons, bitumen, condensates, crude oils, extractable organic matter (EOM), laboratory analyses, molecular composition, petroleum geochemistry, saturated hydrocarbons
Organization: Geoscience Australia Data
Volcanic core of Niue Island, southwest Pacific Ocean

The results of a gravity and magnetic survey of Niue Island, a raised atoll in the southwest Pacific Ocean, indicate that volcanic rocks underlie the coral limestone capping at a depth of 300-400 m below sea level.  A roughly flat-topped, dome-shaped dense volcanic core, is present beneath the southwest of the island. The core has a lateral density contrast of 0.20 t/m3 and a reverse magnetisation of 3.0 A/m, and is believed to be of basaltic composition.  An early-middle Miocene age is inferred for the volcanic pedestal.  The asymmetric location of the core within the island is thought to be evidence for large-scale landslide activity, particularly on the west and south flanks of the seamount.

Tags: Earth Sciences, GA Publication, Journal, Published_External
Organization: Geoscience Australia Data
Peko 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-NT, Published_External, Topographic Map, Topology, topography
Organization: Geoscience Australia Data
AUSGeoid98 v.1.0 data files:  (sh49-09)

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