AndreaBozzo/ceres-open-data-index huggingface dataset:
AUSGeoid98 v.1.0 data files:  (sk57-14)

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 Data format: AUSGeoid98 data files have a header record at the start of each file, to distinguish them from the superseded AUSGeoid93 data files. AUSGeoid98 data files show the geoid-ellipsoid separation to 3 decimal places, while the superseded AUSGeoid93 data files showed only 2 decimal places.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
Tennant Creek elevation grid geodetic

Digital Elevation data record the terrain height variations from the processed point- or line-located data recorded during a geophysical survey. This Tennant Creek elevation grid geodetic is elevation data for the Tennant Creek, NT, 1998. This survey was acquired under the project No. 694 for the geological survey of NT. The grid has a cell size of 0.00042 degrees (approximately 45m).  This grid contains the ground elevation relative to the geoid for the Tennant Creek, NT, 1998. It represents the vertical distance from a location on the Earth's surface to the geoid. The data are given in units of meters. The processed data is checked for quality by GA geophysicists to ensure that the final data released by GA are fit-for-purpose.

Tags: Australia, DEM, EARTH SCIENCES, Earth sciences, Elevation, GADDS2.0, NCI, NT, Published_External, digital data, geoid, geophysical survey, geophysics, grid, raster, survey 694, terrain
Organization: Geoscience Australia Data
Research Cruise Proposal : BMR Cruise 106 : Seabed Morphology and Offshore Resources Around Christmas Island, Indian Ocean : Project 121.32, BMR Offshore Sedimentary Basins Program

Christmas Island is an Australian territory lying south of Java inthe Indian Ocean, at about 10Â°30'S and 105Â°40'E. It lies on oceanic crust of Late Cretaceous age, is moving north at 7cm/year, andis being raised as it climbs the bulge on the southern flank of the Java Trench. The island itself consists of Cainozoic volcanics and limestone, and has been extensively mined for Pliocene phosphate. It covers an area of 140 km2 , and rises 360 m above sea level.
Australia has declared a 200 mile Fisheries Zone around the island, and the aim of this BMR investigation is to assess the seabed morphology, sediment thickness, and offshore mineral resources in a future Exclusive Economic Zone. This information will be of particular value to the Department of Foreign Affairs and Trade, when Australia negotiates a Christmas Island seabed boundary with Indonesia to the north.
Present knowledge indicates that oceanic crust is generally at 5000-6000 m around Christmas Island, and that it is overlain by 100-300m of pelagic sediment which thickens northward toward the Java Trench. A number of volcanic ridges trend generally northeast or north-northeast, and are as shallow as 1200 m below sea level. Christmas Island itself sits on such a ridge. Shallow-water limestones and manganese oxide crusts have been dredged from the ridges. Deepseacoring programs show that pelagic foraminiferal ooze and marl give way to siliceous (diatom-radiolarian) ooze and red clay below 5000 in water depth. Volcanic ash from Indonesia is an additional component of the sediment.
Reconnaissance sampling has shown that manganese nodules are quite common in the deep sea, and that they carry moderate grades of the valuable metals, copper (Cu), nickel (Ni) and cobalt (Co). In a fairly similar geological setting to the west, in the central Indian Ocean, India has pioneer investor status for a nodule mine site of 150,000 square kilometres. At this site the grade of Cu+Ni+Co is about 2.55%,and nodule abundance is 5-7.5% of wet nodules per square metre, figures which suggest that the site has long-term economic potential.
The present project will commence with a 28-day geoscience cruise of R.V. "Rig Seismic" from 7 January to 4 February, 1992. The plan isto acquire about 2500 km of high-resolution reflection seismic and bathymetric data, to define seabed morphology and to allow regional mapping of sediment thickness and facies. The seismic data will beused as the basis of a sampling campaign to investigate sediment type, manganese nodule abundance and metal grade on the deepsea floor, and manganese crust thickness and metal grade on the volcanic ridges. The end result will be a comprehensive review of the geology and mineral resources of the Christmas Island offshore zone.

Tags: CX, Earth Sciences, GA Publication, Published_External, Record, marine, marine survey, morphology
Organization: Geoscience Australia Data
Beviss 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-SA, Orthophoto Map, Published_External, Topographic Map, Topology, topography
Organization: Geoscience Australia Data
2018 Mount Stromlo Geodetic Observatory Co-Location Local Tie Survey Technical Report

The integrity and strength of multi-technique terrestrial reference frames, such as realisations of the International Terrestrial Reference Frame (ITRF), depend on the precisely measured and expressed local-tie connections between space geodetic observing systems at co-located observatories. Australia has several observatories which together host the full variety of space geodetic observation techniques, including Global Navigation Satellites Systems (GNSS), Very Long Baseline Interferometry (VLBI), Satellite Laser Ranging (SLR) and Doppler Orbitography and Radiopositioning Integrated by Satellite (DORIS) beacons.

This report documents the technical aspects of the local tie survey completed at the Mount Stromlo observatory, in Canberra in September 2018. The aim of the survey was to precisely measure the local terrestrial connections between the space-based geodetic observing systems co-located at the observatory, which include 3 International GNSS Service (IGS) stations (AU45&nbsp;A 50119M001, STR3&nbsp;A 50119M005 & STR1&nbsp;A 50119M002), SLR (7825&nbsp;A 50119S003) and DORIS (MSPB&nbsp;A 50119S004) infrastructure. 

In particular, this report documents the indirect measurement of the SLR invariant reference point. Geoscience Australia has routinely performed classical terrestrial surveys at Mount Stromlo, including surveys in 1999, 2002 and 2003 (post-fire). A high precision survey was conducted between the survey pillars surrounding the SLR observatory. These survey pillars were monitored to ensure their stability as part of a consistent, stable terrestrial network from which local tie connections were made to the SLR and other observing systems. The relationship between points of interest included the millimetre level accurate connections and their associated variance covariance matrix.


Tags: 50119M001, 50119M001 50119S004 50119S003 50119M005 50119M002, 50119M002, 50119M005, 50119S003, 50119S004, Doppler Orbitography and Radiopositioning Integrated by Satellite (DORIS), Local Tie, Local Tie Survey 2018, Mount Stromlo, OTHER EARTH SCIENCES, Published_External, STR1, STR2, STR3, Satellite Laser Ranging (SLR), Survey, co-located, geodetic
Organization: Geoscience Australia Data
Wagga Wagga 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-NSW, Published_External, Topographic Map, Topology, topography
Organization: Geoscience Australia Data
Hobblechain 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
Tasmanian Gravity Data (P199450), 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 Tasmanian Gravity Data (P199450) contains a total of 68 point data values acquired at a spacing of 7000 metres. The data is located in TAS and were acquired in 1994, under project No. 199450 for None.

Tags: Australia, EARTH SCIENCES, Earth sciences, GADDS2.0, NCI, Published_External, TAS, geophysical survey, geophysics, gravity, ground digital data, point, point located data, survey 199450
Organization: Geoscience Australia Data
Progress report on the ABC Prospect at 31st October, 1953

This prospect was discovered by Geologist A.B. Clark on the 3rd September, 1953 at a point 11 miles distant and on a bearing of 33 degrees from the Katherine Post Office. Following its discovery a reservation was taken out on behalf of the Bureau of Mineral Resources to protect the area. Detailed geological and geophysical investigations have since been undertaken in the area, and costeaning by hand labour and bulldozer has also been done. The examination and testing of the prospect is not yet complete but a summary of the information concerning the prospect available at 31st October 1953 is given below.

Tags: AU-NT, Earth Sciences, GA Publication, Published_External, Record, geology, geophysics, prospectivity, uranium
Organization: Geoscience Australia Data
Leonora Sheet Gravity (P199202), 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 Leonora Sheet Gravity (P199202) contains a total of 1131 point data values acquired at a spacing between 500 and 4500 metres. The data is located in WA and were acquired in 1992, under project No. 199202 for Australian Geological Survey Organisation (AGSO).

Tags: Australia, EARTH SCIENCES, Earth sciences, GADDS2.0, NCI, Published_External, WA, geophysical survey, geophysics, gravity, ground digital data, point, point located data, survey 199202
Organization: Geoscience Australia Data
Resources and geology of Australia's thorium deposits

Australia's thorium resources currently amount to 452,000tonnes Th of which 364,000tonnes (80.5%) occur in heavy mineral sand deposits, 53,300tonnes (11.7%) in a vein type deposit at Nolans Bore in the Northern Territory and another 35,000tonnes (7.7%) are in an alkaline trachyte plug at Toongi in New South Wales. This distribution of thorium resources differs from the world wide distribution where 31.3% of the resources occur in carbonatites, 24.6% are in placers, 21.4% in vein type deposits and 18.4% in alkaline rocks. This variance is at least partly due to relatively more, although still inadequate, data on thorium resources being generated by the very active heavy mineral sand operations around Australia. Even where thorium analyses have been carried out for other types of deposits that host thorium, such results are not published since thorium is not considered to be economically important.
All of Australia's thorium resources occur in multi-commodity deposits, dominantly the heavy mineral sands and in rare earth deposits where the extraction cost would be shared with if not totally supported by the other commodities in the deposit. Because there has been no large-scale demand for thorium, there has been little incentive for companies to assess the cost for the extraction of thorium resources. Hence there is insufficient information to determine how much of Australia's thorium resources are economic for purposes of electricity power generation in thorium nuclear reactors.
Geoscience Australia is currently engaged in upgrading its database on thorium resources as part of the five-year Onshore Energy Security Program and Australia's figures on its thorium resources will be refined as a result of this work.
Because of limited demand, there has been very little exploration for thorium in Australia. As part of its five year Onshore Energy Security Program, Geoscience Australia is in process of upgrading its continent wide airborne radiometric coverage and is conducting a low density geochemical sampling program across the continent. These programs will help to develop a better understanding of the geological and geochemical environment of thorium in Australia and provide basic pre-competitive data to reduce risk the level of risk for the  mineral exploration industry. 
Assessment of thorium resources by the minerals industry in the future will depend upon the development of commercial-scale thorium nuclear reactors and the resulting demand for thorium resources.

Tags: AU, Earth Sciences, PowerPoint, Published_External, mineral deposits
Organization: Geoscience Australia Data
Preliminary geological report on Madigan's uranium prospect, Northern Territory / P.B. Rosenhain. Preliminary geophysical report on Madigan's uranium prospect, Northern Territory / I.A. Mumme

Madigan's uranium prospect is situated in a Lower Proterozoic sequence of interbedded sandy shales, sandstone and grits. It is located near the headwaters of the Charlotte River, near the crest and on the eastern side of a northerly trending ridge. Detailed geological and radiometric surveys were carried out and significant radioactivity was outlined over an area of approximately 300 feet by 400 feet. Some channel sampling was done over 50 feet in the zone of highest radioactivity. The greatest radioactivity appears to be associated with hematitic material occurring sporadically in a system of flat joints in a grit bed. Some fluorescent minerals were observed in this material.

Tags: AU-NT, Earth Sciences, GA Publication, Published_External, Record, geology, geophysics, radiometrics, uranium
Organization: Geoscience Australia Data
MRTAS Mathinna 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 0.0005 degrees (approximately 49m) and shows uranium element concentration of the NETGOLD - Mathinna, Tas , 1990 in units of parts per million (or ppm). The data used to produce this grid was acquired in 1990 by the TAS Government, and consisted of 1680 line-kilometres of data at 150m line spacing and 80m 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 782, uranium
Organization: Geoscience Australia Data
3D Map and Supporting Geophysical Studies in the North Queensland Region - 3D Data

3D data for the Geoscience Australia Record 2009/029 - 3D Map and Supporting Geophysical Studies in the North Queensland Region. Data consists of: boreholes; curie depth; dem; depth to basement; gravity; inversions grav mag voxets; magnetics; millungera basin; mt cross section surfaces; projection tm144; radiometrics image; regolith linework; seismic; seismic gravity models; smnd image; solid geology detailed; solid geology simplified; topography.
Related product:3D map and supporting geophysical studies in the North Queensland region - Geoscience Australia Record 2009/029.

Tags: 3D model, AU-QLD, Data Package, Earth Sciences, Geothematic, HVC_144629, Published_External, architecture, geophysics, mineral exploration, seismic sections
Organization: Geoscience Australia Data
AUSGeoid98 v.1.0 data files: Nullagine (sf51-05)

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
Borden 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
AUSGeoid98 v.1.0 data files: (sf49-09)

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
Ewing 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
Fifth BMR Symposium [Abstracts]

The 5th BMR Symposium was held in Canberra on the 28th and 29th April 1976, and was opened by the Minister for National Resources, the Rt. Hon. J. D. Anthony. These annual symposia stress work relevance to industry. The program included results of completed projects, of work in progress, and some more general topics. Abstracts of the talks presented are given below.

Tags: ACT, Earth Sciences, GA Publication, Journal, Published_External
Organization: Geoscience Australia Data
The 2002 Mount Pleasant (Hobart) radio telescope local tie survey

The Mt Pleasant Observatory is located near Hobart in Tasmania, Australia. The radio telescope, which is used for Very Long Baseline Interferometry (VLBI), is co-located with the permanent International GPS Service (IGS) GPS site (HOB2).  A local tie survey at Mt Pleasant was completed in March 2002 by specialist Geoscience Australia Geodetic Surveyors using precision classical geodetic observations and geodetic GPS observations.  The purpose of this survey was to repeat the determination of the relationship between the VLBI invariant reference point (7242 A 50116S002), the GPS reference point (HOB2 A 50116M004), and the surrounding survey control.  This type of local tie survey has previously been undertaken at Mt Pleasant in 1995.  This document reports on aspects of this survey.

Tags: AU-TAS, Earth Sciences, GA Publication, Published_External, Record, geodesy
Organization: Geoscience Australia Data