AndreaBozzo/ceres-open-data-index huggingface dataset:
Towards distinguishing transported and in situ ferricretes: data from southern Australia

Controversy has arisen in the past decade concerning ferricrete genesis by relative (in situ) or absolute (lateral) concentration of iron and aluminium oxides.  Some regard  laterite profiles as stratigraphic sequences, with crusts being remnants of iron-impregnated valley sediments. In contrast, the traditional notion of laterite formation invokes vertical translocation of minerals under humid tropical conditions on peneplains close to ultimate base level, with incomplete profiles reflecting variable degrees of erosion. Criteria to discriminate the dominant mode of ferricrete origin include topographic and stratigraphic relationships.  A transported origin is favoured by unconformable contacts between truncated bedrock structures or quartz veins, overlain by ferruginised materials, whereas preservation of bedrock structures through the complete profile indicates formation in place. Ferricrete macromorphology can also be useful in determining whether iron oxides have moved into an area.  Petrological studies suggest that pisoliths with angular irregular shapes and diffuse external borders, and those with similar framework grains within pisoliths and matrix materials, appear to have formed in situ. Formation by physical break up of ferruginised materials, transport and modification is favoured by broken surface coatings, different-sized grains in pisoliths and their matrix materials, different-sized grains in adjacent pisoliths, multiple laminar goethite rinds on pisoliths, abraded compound nodules cemented together by ferruginous, concretionary material, and complex pisolith-within-pisolith structures.  Monomineralogy may suggest in situ pisolith formation, whereas transport is favoured by polymineralogical pisoliths resting on materials that could not have provided the elements for their formation.  In pisolitic ferricrete, significantly different matrix composition from that of the pisoliths favours interpretation of pisoliths as clastic components incorporated within different materials.  Furthermore, maghemitic pisoliths at depth suggest transport and burial and scattering of palaeomagnetic data from individual pisoliths indicates physical disturbance since their formation.

Tags: Earth Sciences, GA Publication, Journal, Published_External
Organization: Geoscience Australia Data
Learmonth 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-WA, Published_External, Topographic Map, Topology, topography
Organization: Geoscience Australia Data
Nuyts 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
Organization: Geoscience Australia Data
Abminga 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-SA, Earth Sciences, GIS Dataset, Published_External, dataset, topography
Organization: Geoscience Australia Data
AUSGeoid98 v.1.0 data files:  (si48-16)

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
AUSGeoid98 v.1.0 data files: Mount Elizabeth (se52-01)

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
Crustal Heat Production in the Australian Antarctic Territory

This map presents radiogenic crustal heat production values calculated from available geochemical data from basement rock exposures from across the Australian Antarctic Territory (AAT). Heat production is derived from the radiogenic decay of the radioactive elements, primarily, U, Th and K. This map, along with the companion GA record (2012/63), highlights the magnitude and heterogeneity of crustal heat production across the AAT, and provides earth scientists with the first crustal heat production assessment across much of East Antarctica. 
Crustal heat production values across the AAT show a wide range from negligible to as much as 65 'Wm-3. Generally, elevated heat production values are characteristic of Cambrian felsic intrusives, with intermediate values from Proterozoic intrusive and metasediments (2-8 Wm-3), and low values (&lt;2 'Wm-3) from Archean rocks. 
A good illustration of the correlation of geological age with heat production is from Prydz Bay (map 5), where the Vestfold Hills (mostly ~2500 Ma in age) exhibits uniformly low heat production (average ~0.8 'Wm-3), whereas Proterozoic rocks south of the Vestfold Hills have intermediate values (average ~2.6 'Wm-3). Cambrian intrusives, in contrast, have significantly elevated values (average ~15 'Wm-3).
We anticipate that this simple compilation of crustal heat production may form a basis for future studies on the thermal structure of the East Antarctic crust, in particular, sub-glacial heat flow, which remains a critical, yet poorly characterised, boundary parameter controlling the dynamic behaviour of the vast Antarctic ice sheet.
For further information and data tables, the reader is referred to 'A reconnaissance crustal heat production assessment of the Australian Antarctic Territory (AAT)' by C. J. Carson and M. Pittard, GA record 2012/063 (pp 57), Geocat 74073.

Tags: Antarctic data, Geoscience, Geothermics and Radiometrics, Published_External, Thematic Map, geothermal
Organization: Geoscience Australia Data
Ladnote Pty Ltd Gravity Additional Data (P198499), 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 Ladnote Pty Ltd Gravity Additional Data (P198499) contains a total of 45 point data values acquired at a spacing between 150 and 350 metres. The data is located in QLD and were acquired in 1984, under project No. 198499 for Ladnote Pty 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 198499
Organization: Geoscience Australia Data
Portland 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-VIC, Published_External, Topographic Map, Topology, topography
Organization: Geoscience Australia Data
Pollution of a fractured rock aquifer by petrol - a case study

Shallow groundwater aquifers are susceptible to pollution by various contaminants.  Amongst them, refined petroleum products are a serious hazard, because of their immiscibility with water, and the explosive and combustible nature of their more volatile constituents.  Ground-water has been polluted by leaked or spilled petrol at two locations in Canberra in the Australian Capital Territory.  At one location, seepage of the pollutant into the basement of a building caused a fatal explosion in 1977.  Investigation by drilling showed that the pollution plume was pancake-shaped and floated on the water-table in a fractured mudstone aquifer; the plume extended over 5000 m2 and was up to 4.5 m thick.  Remedial action has been undertaken for five years by pumping groundwater from a deep bore to depress the water-table, and removing the petrol that collects in the cone of depression with a skimming device. About 40 per cent of the original spill of about 32 000 litres has been removed, and the source traced to leakage from a nearby service station.  At a second site, a pollution plume of petrol occurs on the water-table in cavernous limestone and affects about 300 m2 .  At this locality, petrol has entered the basement of a building as a result of a rising water-table after heavy rain. The two incidents are due to a combination of circumstances, which include the location of underground fuel tanks in an area with a shallow water-table and in close proximity to buildings with basements extending below the water-table.

Tags: Earth Sciences, GA Publication, Journal, Published_External
Organization: Geoscience Australia Data
Junction Bay 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
Cape York (Torres Strait, Jardine River, Orford Bay), QLD, 1986 (P522), 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 Cape York (Torres Strait, Jardine River, Orford Bay), QLD, 1986 survey were acquired in 1986 by the QLD Government, and consisted of 15569 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, Published_External, QLD, airborne digital data, geophysical survey, geophysics, line, magnetic, magnetics, magnetism and palaeomagnetism, survey 522, vector
Organization: Geoscience Australia Data
Petrel Sub-basin 2D Simultaneous Inversion and Rock Physics Modelling

Between 3 May 2012 to 24 June 2012 Geoscience Australia undertook two major surveys off the coast of the Northern Territory in the Petrel Sub-Basin. The data acquisition was funded through the National Low Emissions Coal Initiative (NLECI) and the Petrel Sub-basin was selected in particular as it has been identified as a prospective area for CO2 storage. One of these surveys, GA336 acquired 4091 kilometres of 2D seismic reflection data. Following on from the completion of the seismic processing of this data was further investigative work investigative work such as this analysis.
Four prime lines, GA336-107, 110, 205 and 207 along with the well logs, Flat-Top1, Petrel 1A and Petrel 4 were selected for further 2D Simultaneous Inversion and Rock Physics Modelling. Previous Pre Stack Depth Migration had been undertaken on these lines and the PSDM Angle Stacks were imported along with the relevant horizon interpretation into the Jason integration algorithms.

Tags: AU-NT, AU-WA, CO2 capture, Data Package, Geophysics, Published_External, geophysics, seismic reflection
Organization: Geoscience Australia Data
AUSGeoid98 v.1.0 data files:  (sl53)

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
O'Connor 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-WA, Published_External, Topographic Map, Topology, topography
Organization: Geoscience Australia Data
Reynolds River 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
Australian Fundamental Gravity Network Absolute Gravity Survey 2015: Gravity Survey ID: 201590

Geoscience Australia conducted an absolute gravity survey during April and May 2015 in order to maintain and update the Australian Fundamental Gravity Network (AFGN). During the 2015 AFGN field campaign 35 absolute gravity readings were taken with an A10 gravity meter out of which 29 were new additions to the network. Six of the readings were taken over older AFGN stations in order to update and validate existing values. The re-measures found the previous gravity values agreed with the new A10 measurements within their stated uncertainties. Two ties were made with the CG5 gravity meter from a newly established station in order to resolve discrepancies with existing gravity values. 30 pre-existing stations were checked for their condition during this survey and 5 stations were found to be destroyed. GPS readings were taken at existing stations and their locations updated in the database as many of the old stations had poorly defined locations.

Tags: Geophysics, Gravimetrics, Published_External, Report, gravity
Organization: Geoscience Australia Data
Charra 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-SA, Published_External, Topographic Map, Topology, topography
Organization: Geoscience Australia Data
Tanami EW 5ZA - Th equivalent concentration grid (AWAGS)

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 0.00018 degrees (approximately 20m) and shows thorium element concentration of the NTGS Tanami EW 5ZA Region Detailed Airborne Magnetic Radiometric and Digital Elevation Survey, NT, 2018 in units of parts per million (or ppm). The data used to produce this grid was acquired in 2018 by the NT Government, and consisted of 1547 line-kilometres of data at 100m line spacing and 60m terrain clearance. To constrain long wavelengths in the grid, an independent data set, the Australia-wide Airborne Geophysical Survey (AWAGS) airborne magnetic data, was used to control the base levels of the survey grid.

Tags: AWAGS, Australia, EARTH SCIENCES, Earth sciences, GADDS2.0, NCI, NT, Published_External, Th, airborne digital data, gamma-ray, geophysical survey, geophysics, grid, rad, radiometrics, raster, spectrometry, survey 1312, thorium
Organization: Geoscience Australia Data