AndreaBozzo/ceres-open-data-index huggingface dataset:
The late Paleoproterozoic Buddycurrawa Volcanics, South Nicholson region

The Buddycurrawa Volcanics (BV, Benmara Group) are a sequence of trachyte lavas and interleaved shallow-marine siliciclastic rocks, exposed in the Benmara region, northwestern Mount Drummond 1:250 000 map sheet, Northern Territory. Previous information, including resource potential, on the BV was limited, and stratigraphic correlation with other regional volcanic units was speculative. Our new geochronology data establish the extrusion age of the BV as late Paleoproterozoic, constrained by a maximum age of ca. 1662 Ma (SHRIMP U-Pb zircon) and a minimum age of ca 1631 Ma (in situ laser Rb-Sr on glauconite within vesicles). The BV are, therefore, temporally equivalent to numerous ash fall tuffs reported throughout regional highly prospective late Paleoproterozoic successions. The BV also host vertical siliceous pipes, representing ‘white smokers’—peripheral low-temperature equivalents of black smokers—suggestive of a regional shallow-marine hydrothermal circulatory system and potential for associated base metal mineral systems. The BV are pervasively potassically altered. Laser Rb-Sr dating on matrix secondary microcline returns ages ca. 1612–1323 Ma, reflecting timing of fluid flow responsible for at least some of the potassic alteration. These are broadly consistent with similar estimates of episodes of regional fluid flow and base metal mineralisation and/or remobilisation in the Mount Isa Province.
Citation: Carson, C.J., Kositcin, N., Farkas, J., Champion, D.C., Whelan, J., Redaa, A., Gilbert. S., Henson, P.A., Maas, R., Williams, B. and Doublier, M.P., 2020. The late Paleoproterozoic Buddycurrawa Volcanics, South Nicholson region. 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: Basins, Benmara Group, EARTH SCIENCES, EFTF, Exploring For The Future, GEOLOGY, Geochronology, Potassic Alteration, Published_External, South Nicholson Basin, Volcanics
Organization: Geoscience Australia Data
How to use geodetic VLBI to measure relativistic light deflection from extragalactic objects

The Sun's gravitational field deflects the apparent positions of close objects in accordance with the formulae of general relativity. Optical astrometry is used to test the prediction, but only with the stars close to the Sun and only during total Solar eclipses. Nowadays, more advanced technique, geodetic Very Long Baseline Interferometry (VLBI) is applied for testing of general relativity with precision about 0.01 percent. The geodetic VLBI is capable of measuring the gravitational delay based on the differential Shapiro's delay. By reason, the gravitational delay is equivalent to the deflection of the light from distant radio sources and could be measured at any time and across the whole sky. In accordance with the theory, all celestial objects display annual circular motion with the magnitude proportional to their ecliptic latitude due to the Earth orbital motion. In particular, the objects near the ecliptic pole draw an annual circle with magnitude of 4 millisecond of arc. 
In contrast to a single optical telescope, a single ground-based VLBI interferometer is made of two radio telescopes separated by several thousand kilometers. This provides an additional advantage to detect a secondary light deflection angle caused by the parallactic shift of the Sun as observed from both ends of the interferometer. This effect is proportional to the baseline length and is about 0".01 for grazing light at baseline of 8000 km. It could be used in future space interplanetary VLBI missions with baseline length of one billion kilometers (comparable to the Jupiter orbit size) for direct detection of invisible mass from extragalactic objects.
Presented at the 28th Texas Symposium on Relativistic Astrophysics Geneva, Switzerland – December 13-18, 2015

Tags: Earth Sciences, External Publication, Published_External
Organization: Geoscience Australia Data
Kolendo 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
Mackay 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-QLD, Published_External, Topographic Map, Topology, topography
Organization: Geoscience Australia Data
Southern Gunnedah Gravity Survey, NSW 2008 (P200820), 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 Southern Gunnedah Gravity Survey, NSW 2008 (P200820) contains a total of 5404 point data values acquired at a spacing of 2000 metres. The data is located in NSW and were acquired in 2008, under project No. 200820 for New South Wales Department of Primary Industries.

Tags: Australia, EARTH SCIENCES, Earth sciences, GADDS2.0, NCI, NSW, Published_External, geophysical survey, geophysics, gravity, ground digital data, point, point located data, survey 200820
Organization: Geoscience Australia Data
Favenc 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-NT, Published_External, Topographic Map, Topology
Organization: Geoscience Australia Data
Torrens - Andamooka Region Gravity (P196855), 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 Torrens - Andamooka Region Gravity (P196855) contains a total of 384 point data values acquired at a spacing between 3000 and 7000 metres. The data is located in SA and were acquired in 1968, under project No. 196855 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 196855
Organization: Geoscience Australia Data
Cobar P5009 EXT 3 total magnetic intensity grid

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 Cobar P5009 EXT 3 total magnetic intensity grid has a cell size of 0.00039074 degrees (approximately 40m). The units are in nanoTesla (or nT). The data used to produce this grid was acquired in 2021 by the NSW Government, and consisted of 53617 line-kilometres of data at 200m line spacing and 60m terrain clearance.

Tags: Australia, EARTH SCIENCES, Earth sciences, GADDS2.0, NCI, NSW, Published_External, TMI, airborne digital data, geophysical survey, geophysics, grid, mag, magnetics, magnetism, palaeomagnetism, raster, survey 5009, total magnetic intensity
Organization: Geoscience Australia Data
Bathymetry grids of SOJN05MV Survey (GA-1175)

The SOJN05MV bathymetry survey, GA-1175 was acquired by Oregon state University onboard the Scripps Institution of Oceanography (SIO) RV Melville from the 19th of February to the 02nd of march 1997 using a SeaBeam 2000 sonar system.
The bathymetry dataset was acquired while the RV Melville was transiting from Fremantle to Hobart.
This dataset contains the 128m resolution, 32-bit geotiffs of the SOJN05MV survey produced from the processed SeaBeam system bathymetry data of the survey area using the CARIS HIPS and SIPS software.
This dataset is published with the permission of the CEO, Geoscience Australia.
Not to be used for navigational purposes.
Appropriate acknowledgment must be given to both the original scientists (Christie, David) (http://www.marine-geo.org/tools/search/entry.php?id=SOJN05MV#datasets) and to the Marine Geoscience Data System (www.marine-geo.org). 

Tags: AusSeabed, Bathymetry, Bathymetry grids, EARTH SCIENCES, HVC_144641, Marine, Multibeam, Published_External
Organization: Geoscience Australia Data
AusSeabed Annual Progress Report 2021/22

Established in 2018, AusSeabed is a collaborative national seabed mapping initiative focused on delivering freely accessible seabed mapping data and coordinating efforts to map the gaps across the Australian maritime region of responsibility.
AusSeabed is driven by a cross-sector steering committee bringing together organisations from the government, academia and private sectors to ensure an inclusive and diverse representation of the seabed mapping community.
This Annual Progress Report provides a detailed account of the progress made against the AusSeabed program activities planned for 2021/22. A summary of highlights can be found in the Annual Highlights Report.

Tags: Annual Report, AusSeabed, Marine Geoscience, Published_External, Seabed Mapping
Organization: Geoscience Australia Data
Contaminant dynamics in offchannel embayments of Port Jackson, New South Wales

Iron Cove, Hen and Chicken Bay, Homebush Bay, and Rozelle/Blackwattle Bay are offchannel embayments on the southern shoreline of Port Jackson. These shallow (&lt;8 m water depth) embayments are mantled by bioturbated surficial sediments of easily resuspended oxic material (&gt;90% mud), termed the  hydrous layer. Sediment in these offchannel embayments is highly enriched in metallic and organic contaminants and each embayment is characterised by a distinct ratio of heavy-metal concentrations. Heavy-metal concentrations and total-organic and sulphur contents of sediments decrease rapidly seaward from storm water canals and other point sources.  Sediment traps deployed at six locations in Iron Cove, each week for two periods of 16 and 26 weeks, provide time-integrated samples and settling rates of particulate matter from the overlying water column. Settling rates recorded during summer deployments were four times higher than during winter. Comparable heavy-metal concentrations between settling particulate matter and the ambient hydrous layer at each trap location imply that the majority of the trapped material is derived by resuspension. The relative contribution of the many processes which may resuspend surficial estuarine sediment, e.g. physical (wind-generated waves, tidal action , stormwater runoff), biogeochemical (bioturbation, flocculation and dispersion), and anthropogenic (trawling, boating, engineering construction) are discussed.  The implications of these findings are that toxicants bound in sulphidic sediments are continuously remobilised into the water column. Resuspension and secondary sourcing of highly contaminated sediments probably occurs in many of the extensive shallow water environments of Port Jackson and other affected estuarine systems, thereby providing a pathway for contaminants to enter the foodchain.

Tags: Earth Sciences, GA Publication, Journal, NSW, Published_External
Organization: Geoscience Australia Data
MRTAS Flinders Island 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 41m) and shows uranium element concentration of the Flinders Island, Tasmania, 2007 in units of parts per million (or ppm). The data used to produce this grid was acquired in 2007 by the TAS Government, and consisted of 18426 line-kilometres of data at 200m line spacing and 90m 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 1142, uranium
Organization: Geoscience Australia Data
Port Keats 1:250 000, R502 historical topographic map

The R502 series of maps has been replaced by the National Topographic Map Series (NTMS). The R502 series consists of 542 map sheets and covers Australia at a scale of 1:250,000. It was compiled from aerial photography, but only about one quarter of the series was contoured. The standard sheet size is 1 degree of latitude by 1.5 degrees of longitude. Transverse Mercator map projection and Clark 1858 datum were used. Coverage of the country was completed in 1968.

Tags: 250K scale, AU_NT, Published_External, Topographic Map, Topology
Organization: Geoscience Australia Data
Synthetic Aperture Radar (SAR) processing workflow - a software component of the Geoscience Australia InSAR project

The aim of the Interferometric Synthetic Aperture Radar (InSAR) project is to develop an end-to-end, fully automated InSAR processing system that will take raw SAR data from any sensor and produce time-series maps of surface deformation/movement.
Surface deformation maps are important products to help define the national geodetic reference frame by augmenting the geodetic data obtained from sparse ground networks, in addition to identifying regions with elevated natural hazard risk.

Tags: AuScope, Geodesy, InSAR, Positioning Australia, Published_External, SAR, geodesy, remote sensing, surface deformation
Organization: Geoscience Australia Data
Nayarnpi 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-NT, Published_External, Topographic Map, Topology, topography
Organization: Geoscience Australia Data
Red Lake 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-SA, Published_External, Topographic Map, Topology, topography
Organization: Geoscience Australia Data
GSV Heathcote Vic pot tho ura totg 4band radiometric grid geodetic

This GSV Heathcote Vic pot tho ura totg 4band radiometric grid geodetic is an airborne-derived radiometric Potassium, Thorium and Uranium data over a sun shaded total count radiometric data for the Heathcote, Vic, 1988 (GSV0360). The radiometric, or gamma-ray spectrometric method, measures the natural variations in the gamma-rays detected near the Earth's surface as the result of the natural radioactive decay of uranium (K), uranium (U) and uranium (Th). The data collected are processed via standard methods to ensure the response recorded is that due only to the rocks in the ground. The results produce datasets that can be interpreted to reveal the geological structure of the sub-surface. The processed data is checked for quality by GA geophysicists to ensure that the final data released by GA are fit-for-purpose.
This GSV Heathcote Vic pot tho ura totg 4band radiometric grid geodetic has a cell size of 0.0005 degrees (approximately 50m). The data used to produce this grid was acquired in 1988 by the VIC Government, and consisted of 3040 line-kilometres of data at 200m line spacing and 70m terrain clearance. The grid was produced by applying the colours red to the Potassium ground concentration, green to the Thorium concentration and blue to the Uranium concentration. The colours were clipped to a 99% linear scale. These colours were transparent over a shaded Total Count. This clipping will necessarily introduce some artefacts into the ratio grids in areas of very low radioelement concentrations. The 3-band image was superposed on the sun shaded TC grid of the same survey to produce the final image.

Tags: 4-band, Australia, EARTH SCIENCES, Earth sciences, GADDS2.0, K, NASVD, NCI, Published_External, TC, Th, U, VIC, airborne digital data, four band, gamma-ray, geophysical survey, geophysics, grid, image, potassium, rad, radiometrics, raster, spectrometry, survey 1520, thorium, total count, uranium, window countrate
Organization: Geoscience Australia Data
Corner reflectors for the Australian Geophysical Observing System and support for calibration of satellite-borne synthetic aperture radars

Geoscience Australia is developing the geospatial component of the Australian Geophysical Observing System (AGOS). AGOS infrastructure will include a network of radar corner reflectors, in addition to a geodetic ground mark network for monitoring ground deformation in Australia. In this paper we describe the design of radar corner reflectors for deformation studies and calibration of Synthetic Aperture Radar sensors. Through a prototyping campaign in 2013 we will seek a single
reflector design that can be used for deformation and calibration studies using X- and C-band SAR sensors. Prototyping will involve precise determination of reflector radar cross section (RCS) at an outdoor radar test range and a temporary field deployment in the Canberra region during which X- and
C-band acquisitions will be made from orbiting SAR satellites. We outline plans to deploy corner reflectors in the Surat Basin of Queensland to monitor ground deformation induced by coal seam gas extraction.

Tags: Earth Sciences, External Publication, Published_External
Organization: Geoscience Australia Data
Moore 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-QLD, Published_External, Topographic Map, Topology, topography
Organization: Geoscience Australia Data
Structural Measurements Database

The Geoscience Australia Structural Measurements Database contains field measurements of geological structure features such as bedding, foliation, lineation, faults and folds from field sites, measured sections, and boreholes.  The database is delivered as a layer in Geoscience Australia's "Geological Field Sites, Samples and Observations" web service.

Tags: EARTH SCIENCES, GEOLOGY, Published_External, Structural Geology, Tectonics, fault, fold
Organization: Geoscience Australia Data
Methodologies for multibeam seabed hardness mapping in the Timor Sea - Planar Curvature

This dataset contains planar curvature data from seabed mapping surveys on the Van Diemen Rise in the eastern Joseph Bonaparte Gulf of the Timor Sea. The survey was conducted under a Memorandum of Understanding between Geoscience Australia (GA) and the Australian Institute of Marine Science (AIMS) in two consecutive years 2009 (GA survey number GA-0322 and AIMS survey number SOL4934) and 2010 (GA survey number GA-0325 and AIMS survey number SOL5117). The surveys obtained detailed geological (sedimentological, geochemical, geophysical) and biological data (macro-benthic and infaunal diversity, community structure) for the banks, channels and plains to investigate relationships between the physical environment and associated biota for biodiversity prediction. The surveys also provide Arafura-Timor Sea, and wider northern Australian marine region context for the benthic biodiversity of the Van Diemen Rise. Four study areas were investigated across the outer to inner shelf. Refer to the GA record 'Methodologies for seabed substrate characterisation using multibeam bathymetry, backscatter, and video data: A case study for the Eastern Joseph Bonaparte Gulf, Northern Australia' for further information on processing techniques applied (GeoCat: 74092; GA Record: 2013/11).

Tags: AU-NT, Bathymetry Grid, Marine Data, Marine Geoscience, NERP, Published_External, bathymetry, geoscience, marine, multibeam
Organization: Geoscience Australia Data