AndreaBozzo/ceres-open-data-index huggingface dataset:
Rockhampton 1 and 2, Monto, 1994-1995, Qld,AIRDATA (P790), 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 Rockhampton 1 and 2, Monto, 1994-1995, Qld,AIRDATA (P790), radiometric line data, AWAGS levelled were acquired in 1994 by the QLD Government, and consisted of 156236 line-kilometres of data at 400m line spacing and 80m terrain clearance. To constrain long wavelengths in the data, an independent data set, the Australia-wide Airborne Geophysical Survey (AWAGS) airborne magnetic data, was used to control the base levels of the survey data. This survey data is essentially levelled to AWAGS.

Tags: AWAGS, Australia, EARTH SCIENCES, Earth sciences, GADDS2.0, NASVD, Published_External, QLD, airborne digital data, gamma-ray, geophysical survey, geophysics, line, potassium, radiometrics, spectrometry, survey 790, thorium, uranium, vector
Organization: Geoscience Australia Data
3D Mapping and Gravity Modelling of Capel and Faust Basins

The Capel and Faust basins lie at water depths of 1500-3000 metres, 800 km east of Brisbane. Geoscience Australia began a petroleum prospectivity study of these remote frontier basins with acquisition of reflection and refraction seismic, gravity, magnetic and multi-beam bathymetry data across an area of 87,000 km2 during 2006/07. The approach mapped a complex distribution of sub-basins through an integration of traditional 2D reflection seismic interpretation techniques with 3D mapping and gravity modelling. Forward and inverse  gravity models were used to inform the ongoing reflection seismic interpretation and test the identification of basement. Gravity models had three sediment layers with average densities inferred from refraction velocity modelling of 1.85, 2.13, 2.31 t/m3 overlying a pre-rift basement of density 2.54 t/m3, itself considered to consist in part of intruded older basin material. Depth conversion of horizon travel times was achieved using a function derived from models of refraction data. Gravity modelling of the simple density model arising from the initial interpretation of reflection seismic data indicated a first order agreement between observed and calculated data. The second order misfits could be accounted for by a combination of adjustments to the density values assigned to each of the layers, localised adjustments to the basin depths, and heterogeneity in the basement density values. The study concluded that sediment of average velocity 3500 m/s exceeds 6000 m thickness in the northwest of the area, which is sufficient for potential petroleum generation.

Tags: 3D model, Conference Paper, Earth Sciences, External Publication, Published_External, geophysics, gravity, petroleum geology, sedimentary basins
Organization: Geoscience Australia Data
Pacific Sea Level and Geodetic Monitoring Project Levelling & GNSS Monitoring Survey Reports: Honiara, Solomon Islands, August 2019

The Australian Bureau of Meteorology (BoM), Geoscience Australia (GA) and the Pacific Community (SPC) work together on the Australian Aid funded Pacific Sea Level and Geodetic Monitoring Project (PSLGMP). The project is focused on determining the long-term variation in sea level through observation and analysis of changes in the height of the land (using Global Navigation Satellite System (GNSS) data) and changes in the sea level (using tide gauges managed and operated by the BoM. It is the role of GA and SPC to provide information about ‘absolute’ movement of the tide gauge (managed by BoM) using GNSS to continuously monitor land motion and using levelling (SPC) to measure the height difference between the tide gauge and GNSS pillar every 18 months.
Land movement caused by earthquakes, subsidence and surface uplift have an important effect on sea level observations at tide gauges. For example, a tide gauge connected to a pier which is subsiding at a rate of 5 mm per year would be observed as a rate of 5 mm per year of sea level rise at the tide gauge. Because of this, it is important to measure, and account for, the movement of land when measuring ‘absolute’ sea level variation - the change in the sea level relative to the centre of the Earth. Relative sea level variation on the other hand is measured relative to local buildings and landmass around the coastline.
Geoscience Australia’s work enables more accurate 'absolute' sea level estimates by providing observations of land motion which can be accounted for by BoM when analysing the tide gauge data.
This report provides the results of the GNSS monitoring survey &amp; high precision level survey completed between the Sea Level Fine Resolution Acoustic Measuring Equipment (SEAFRAME) tide gauge and the GNSS Continuously Operation Reference Station (CORS) in Honiara, Solomon Islands from 4th to 11th August 2019. It also provides an updated height of the tide gauge derived from GNSS time series analysis and precise levelling observations.

Tags: Geodesy, Pacific, Published_External, geodesy, land motion
Organization: Geoscience Australia Data
Pooley 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: AU-NT, Orthophoto Map, Published_External, Topographic Map, Topology, topography
Organization: Geoscience Australia Data
Permo-Triassic stratigraphy and sedimentation in the Bowen Basin, Queensland

Part of the Permo-Triassic succession in the Bowen Basin consists of coal measures (Blackwater Group) overlain by a redbed sequence (Rewan Group) and a sequence composed essentially of quartz-rich sandstone (Clematis Group). The succession attains a maximum thickness of 3500 m. This study discusses the stratigraphy and controls of sedimentation, mainly from observations in the northern half of the basin. The coal measures were formed at the close of the Permian when earth movements created a rapidly subsiding intermontane basin, possibly with an internal drainage system. The Rewan Group was laid down in the same drainage basin in a system of meandering and anastomosing channels, in response to a decreased rate of subsidence relative to the rate of supply of sediment. The red colour of the mudstone is due to the presence of finely divided hematite derived from red soils in the source area. When the rate of sediment supply exceeded the rate of subsidence, a major reorganization of the drainage system took place, together with a general increase in stream gradients as sandy sediment accumulated along the margin of the basin. Changes of relief in the source area, and in the type of vegetation, local climate, and rates of erosion and subsidence, led to podsolic weathering in both the source area and at the site of deposition; fossil soil profiles can now be recognized by the application of micropedological analysis to the mottled red and green mudstone of the basal part of the Clematis Group. The newly established system of braided and meandering channels spread sand from the northern and southwestern parts of the area towards the southeast, where the rate of subsidence was greatest.

Tags: AU-QLD, Bulletin, Earth Sciences, GA Publication, Published_External, geology, stratigraphy
Organization: Geoscience Australia Data
The Granites, Mt Solitaire, Highland Rocks, Mt Theo, NT, 1993 (P599), 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 The Granites, Mt Solitaire, Highland Rocks, Mt Theo, NT, 1993 (P599), radiometric line data, AWAGS levelled were acquired in 1993 by the NT Government, and consisted of 108984 line-kilometres of data at 500m line spacing and 90m terrain clearance. To constrain long wavelengths in the data, an independent data set, the Australia-wide Airborne Geophysical Survey (AWAGS) airborne magnetic data, was used to control the base levels of the survey data. This survey data is essentially levelled to AWAGS.

Tags: AWAGS, Australia, EARTH SCIENCES, Earth sciences, GADDS2.0, NASVD, NT, Published_External, airborne digital data, gamma-ray, geophysical survey, geophysics, line, potassium, radiometrics, spectrometry, survey 599, thorium, uranium, vector
Organization: Geoscience Australia Data
Summary of results. Joint GSQ-GA geochronology project: Thomson Orogen, Mossman Orogen and Cape York, 2015 - 2016.

This record presents new Sensitive High Resolution Ion MicroProbe (SHRIMP) U–Pb geochronological results from widely distributed regions in northeast Queensland, encompassing the Thomson Orogen (Greenvale and Charters Towers provinces), Mossman Orogen (Hodgkinson Province) and Cape York (including the Iron Range Province). This work was carried out under the auspices of a National Collaboration Framework (NCF) Project Agreement between Geoscience Australia (GA) and the Geological Survey of Queensland (GSQ) between July 2015 and June 2016.
Investigations and mapping programs by the GSQ. Detailed results encompassing location and geological context, description of the target mineral for geochronology, the relevant analytical data, and a brief interpretation are presented for each sample. A summary of the results is presented in Table i, and the sample locations are shown in Figure i. The data and age interpretations contained in this record are also available in Geoscience Australia’s Geochron Delivery database (http://www.ga.gov.au/geochron-sapub-web/).
Bibliographic Reference: Kositcin, N., Lisitsin, V., Bultitude, R.J., Purdy, D.J., Brown, D.D., von Gnielinski, F.E. &amp; Dhnaram, C., 2016: Summary of results - Joint GSQ–GA geochronology project: Thomson Orogen, Mossman Orogen and Cape York, 2015–2016. Queensland Geological Record 2016/09.

Tags: Cape York, EARTH SCIENCES, Mossman Orogen, Published_External, Sensitive High Resolution Ion MicroProbe - SHRIMP, Thomson Orogen, geochronology
Organization: Geoscience Australia Data
A robust interpolation-based method for forensic soil provenancing. A Bayesian likelihood ratio approach

Soil is a complex and spatially variable material that has a demonstrated potential to be a useful evidence class in forensic casework and intelligence operations. Here, the capability to spatially constrain searches and prioritise resources by triaging areas as low and high interest is advantageous. Conducted between 2017 and 2021, a forensically relevant topsoil survey (0-5 cm depth; 1 sample per 1 km2) has been carried out over Canberra, Australia, with the aims of documenting the distribution of chemical elements in an urban/suburban environment, and of acting as a testbed for investigating various aspects of forensic soil provenancing. Geochemical data from X-Ray Fluorescence (XRF; for total major oxides) and Inductively Coupled Plasma-Mass Spectrometry (ICP-MS; for trace elements) following a total digestion (HF + HNO3) were obtained from the survey’s 685 topsoil samples (plus 138 additional quality control samples and six “Blind” simulated evidentiary samples). Using those “Blind” samples, we document a likelihood ratio approach where for each grid cell the analytical similarity between the grid cell and evidentiary sample is attributed from a measure of overlap between both Cauchy distributions, including appropriate uncertainties. Unlike existing methods that base inclusion/exclusion on an arbitrary threshold (e.g., ± three standard deviations), our approach is free from strict binary or Boolean thresholds, providing an unconstrained gradual transition dictated by the analytical similarity. Using this provenancing model, we present and evaluate a new method for upscaling from a fine (25 m x 25 m) interpolated grid to a more appropriate coarser (500 m x 500 m) grid, in addition to an objective method using Random Match Probabilities for ranking individual variables to be used for provenancing prior to receiving evidentiary material. Our results show this collective procedure generates more consistent and robust provenance maps between two different interpolation algorithms (e.g., inverse distance weighting, and natural neighbour), grid placements (e.g., grid shifts to the north or east) and theoretical users (e.g., different computer systems, or forensic geoscientists).
Citation: Michael G. Aberle, Patrice de Caritat, James Robertson, Jurian A. Hoogewerff, A robust interpolation-based method for forensic soil provenancing: A Bayesian likelihood ratio approach, Forensic Science International, Volume 353, 2023, 111883, ISSN 0379-0738.
https://doi.org/10.1016/j.forsciint.2023.111883.

Tags: Inorganic geochemistry, Published_External, Soil chemistry and soil carbon sequestration (excl. carbon sequestration science), Soil forensics, Urban geography, forensic science, interpolation, likelihood ratio, provenancing
Organization: Geoscience Australia Data
Report on the biostratigraphy of the Georgina Basin succession in NDI Carrara 1

Stratigraphic drill hole NDI Carrara 1 was drilled as a collaboration between Geoscience Australia (GA), the Northern Territory Geological Survey (NTGS) and the Mineral Exploration Cooperative Research Centre (MinEx CRC). It reached a total depth of 1751 m in late 2020 and is the first drill hole to intersect the undifferentiated Proterozoic rocks of the Carrara Sub-Basin. It intersected approximately 630 m of Cambrian Georgina Basin sedimentary rocks overlying the ~1100 m of Proterozoic carbonates, black shales and other siliciclastics of the Carrara Sub-Basin succession.
The formational assignments of the Georgina Basin succession are preliminary and were assigned in the field. The units intersected comprise the Border Waterhole Formation (~531m to ~630m), which is overlain by the Currant Bush Limestone (~249m to ~531m), which in turn is overlain by the Camooweal Dolostone (0m to ~249m). Of these, only the lower 80% of the Currant Bush Limestone and the entire Border Waterhole Formation were cored.
This report presents biostratigraphic results from macrofossil examination of NDI Carrara 1 core samples within the Georgina Basin section.

Tags: Carrara Sub-basin, EARTH SCIENCES, EFTF - Exploring For The Future, GEOLOGY, Georgina Basin, MinEx Cooperative Research Centre (CRC), NDI Carrara 1, Palaeontology (incl. Palynology), Published_External, South Nicholson National Drilling Initiative, South Nicholson region
Organization: Geoscience Australia Data
Geoscience Australia Marine Survey GA0332 (SS05/2011): Natural hydrocarbon seepage survey of the offshore northern Perth Basin  - Chlorophyll a, b and c and phaeophytin a of seabed sediments.

In September and October of 2011 Geoscience Australia surveyed part of the offshore northern Perth Basin in order to map potential sites of natural hydrocarbon seepage. The primary objectives of the survey were to map the spatial distribution of seepage sites and characterise the nature of the seepage at these sites (gas vs oil, macroseepage vs microseepage; palaeo vs modern day seepage) on the basis of: acoustic signatures in the water column, shallow subsurface and on the seabed; geochemical signatures in rock and sediment samples and the water column; and biological signatures on the seabed. Areas of potential natural hydrocarbon seepage that were surveyed included proven (drilled) oil and gas accumulations, a breached structure, undrilled hydrocarbon prospects, and areas with potential signatures of fluid seepage identified in seismic, satellite remote sensing and multibeam bathymetry data. Within each of these areas the survey acquired: water column measurements with the CTD; acoustic data with single- and multi-beam echosounders, sidescan sonar and sub-bottom profiler (sidescan not acquired in Area F as it was too deep in places); and sediment and biological samples with the Smith-McIntyre Grab. In addition, data were collected with a remotely operated vehicle (ROV), integrated hydrocarbon sensor array, and CO2 sensor in selected areas. Sampling with the gravity corer had limited success in many of the more shallow areas (A-E) due to the coarse sandy nature of the seabed sediments. This dataset comprises chlorophyll a,b, and c and phaeophyton a measurements from the surface 0.5 cm of seabed sediments

Tags: AU-WA, Marine Data, Marine Geoscience, Published_External, continental shelf, geochemistry, marine, marine survey, seabed
Organization: Geoscience Australia Data
NT Road Surveys 1987-1997 Musgrave Block (P199484), 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 NT Road Surveys 1987-1997 Musgrave Block (P199484) contains a total of 166 point data values acquired at a spacing between 200 and 1000 metres. The data is located in NT, SA and were acquired in 1994, under project No. 199484 for Northern Territory of Australia (Northern Territory Geological Survey).

Tags: Australia, EARTH SCIENCES, Earth sciences, GADDS2.0, NCI, NT, Published_External, SA, geophysical survey, geophysics, gravity, ground digital data, point, point located data, survey 199484
Organization: Geoscience Australia Data
Mt Isa B Gravity Bouguer Anomaly

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 Mt Isa B Gravity Bouguer Anomaly is a complete Bouguer anomaly grid for the Mt Isa 2006, Area B (P200641). This gravity survey was acquired under the project No. 200641 for the geological survey of QLD. The grid has a cell size of 0.0041 degrees (approximately 400m). The data are given in units of um/s^2, also known as 'gravity units', or gu. A total of 9857 gravity stations were acquired to produce this grid.

Tags: Australia, Bouguer, EARTH SCIENCES, Earth sciences, GADDS2.0, NCI, Published_External, QLD, geophysical survey, geophysics, grav, gravity, grid, ground digital data, infinite slab, raster, simple Bouguer, survey 200641
Organization: Geoscience Australia Data
Geochemical map of Australia (First Edition) - Cu (copper) series

Map(s) of Cu (copper) concentration (Total content, Aqua Regia soluble content, and/or Mobile Metal Ion soluble content) in Top Outlet Sediment (TOS) and/or Bottom Outlet Sediment (BOS) samples, dry-sieved to &lt;2 mm and/or &lt;75 um grain size fractions. Source: The Geochemical Atlas of Australia (Caritat and Cooper, 2011)

Tags: AU, Earth Sciences, Geoscience, Published_External, Thematic Map, geochemistry, mapping, regolith
Organization: Geoscience Australia Data
Hoking 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-WA, Published_External, Topographic Map, Topology
Organization: Geoscience Australia Data
SA Detailed Gravity Survey 80O4 (P198054), 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 SA Detailed Gravity Survey 80O4 (P198054) contains a total of 515 point data values acquired at a spacing between 400 and 1300 metres. The data is located in SA and were acquired in 1980, under project No. 198054 for None.

Tags: Australia, EARTH SCIENCES, Earth sciences, GADDS2.0, NCI, Published_External, SA, geophysical survey, geophysics, gravity, ground digital data, point, point located data, survey 198054
Organization: Geoscience Australia Data
Fowlers Gap 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-NSW, Published_External, Topographic Map, Topology
Organization: Geoscience Australia Data
AUSGeoid98 v.1.0 data files:  (sh48-08)

AUSGeoid98 data files contain a 2 minute grid of AUSGeoid98 data covering the Australian region, which you can use to interpolate geoid-ellipsoid separations for the positions required.You can use your own interpolation software, or you can use Geoscience Australia's Windows Interpolation software (Winter). The data files are text files in a standard format that cover the same area as standard topographic map areas. Files covering both 1:250,000 (approximately 100 x 150 km) and 1:1,000,000 (approximately 400 x 600 km) map areas are available. There is a 4 minute overlap on all sides of each area. Data format: AUSGeoid98 data files have a header record at the start of each file, to distinguish them from the superseded AUSGeoid93 data files. AUSGeoid98 data files show the geoid-ellipsoid separation to 3 decimal places, while the superseded AUSGeoid93 data files showed only 2 decimal places. AUSGeoid98 deflections of the vertical were computed from the geoid-ellipsoid separation surface, while the AUSGeoid93 deflections of the vertical were computed from OSU91A.

Tags: AU, AUSGeoid98, Geodesy, Geodetic Data, Published_External, dataset, geodesy
Organization: Geoscience Australia Data