AndreaBozzo/ceres-open-data-index huggingface dataset:
Geophysical response of heavy-mineral sand deposits at Jerusalem Creek, New South Wales

BMR has started evaluating how geophysical methods might assist in exploration for deposits of the heavy minerals rutile, zircon, ilmenite, and monazite. Historically, exploration for these heavy minerals has concentrated on the search for high-grade onshore beach-sand deposits, and has employed surface sampling and shallow drilling. However there is a growing awareness that future exploration targets are likely to be low grade and perhaps either deeply buried or located offshore. Exploration directed towards these targets will require new exploration methods, particularly those which offer remote sensing capabilities. BMR has begun a program of test surveys and laboratory investigations to establish the geophysical response of heavy-mineral deposits. As the first stage of these investigations, airborne and ground geophysical surveys were made over heavy-mineral deposits in the Jerusalem Creek area of NSW during 1975. Jerusalem Creek was chosen for the initial field investigations because of the variety and extent of heavy-mineral deposits in the area. The airborne survey (Fig. 1) was carried out over an area of 200 sq km of coastal plain south of Evans Head, and used magnetic and gamma spectrometer methods. Ground surveys were conducted over the Evans West and GL 10 deposits, using magnetic, radiometric and induced polarization methods. The locations of the Evans West and GL 10 deposits are shown in Figure 1. The Evans West deposit is 2 km in length, 3 m thick, 30 m wide, and is covered by 3 m of overburden. The deposit has a fairly sharp grade cut-off at its boundaries, and averages about 10 percent heavy minerals comprising 36 percent zircon, 35 percent rutile, 25 percent magnetics, minor monazite and other minerals. The magnetic fraction is largely ilmenite. The GL 10 deposit has a similar mineral composition but the deposit consists of several parallel leads up to 40 m wide. The average grade of the deposit is only 1-5 percent, and the deposit is buried under only 0.5 m of cover. The magnetic, radiometric and induced polarization methods were used because the mineral assemblage of the Jerusalem Creek deposits suggests susceptibility, radioactivity and induced polarization contrasts between ore and the surrounding sands. The Evans West and GL 10 deposits were chosen as ground survey sites because extensive mine development drilling provided excellent geological control for the interpretation of geophysical results. To establish the physical properties of heavy-mineral ores and to assist interpretation of the geophysical surveys, laboratory measurements of susceptibility, induced polarization and radioactivity were made of ore and sand samples collected from the Evans West deposit. The surveys at Jerusalem Creek were carried out in close co-operation with Associated Minerals Consolidated (AMA), whose assistance in the planning and carrying out of the survey is gratefully acknowledged.

Tags: Earth Sciences, GA Publication, Journal, NSW, Published_External
Organization: Geoscience Australia Data
Geodynamic Synthesis of the Phanerozoic of Eastern Australia and Implications for Metallogeny

This report presents the results of a geodynamic synthesis of the Phanerozoic of Eastern Australia. This was undertaken with the dual aims: 
(1) to better understand the tectonic and geodynamic setting of existing mineral deposits within eastern Australia
(2) to provide a predictive capability, within the synthesised geodynamic framework, for extending potential regions of known mineralisation and for delineating regions with potential for new mineral styles and commodities.
The report combines the Mineral Systems approach of Wyborn et al. (1997) with the 'Five Questions' methodology adopted by the pmd*CRC (http://www.pmdcrc.com.au/RESprograms.html; Barnicoat, 2007, 2008). It is clearly targeted at the first of the 'Five Questions', namely, constraining and understanding the regional and local geodynamic environment as the first step in delineating mineral systems. To achieve this we have synthesised geological and metallogenic data on a regional, largely orogenic, basis. This was undertaken to identify geological and metallogenic events and geodynamic cycles, and to produce regional geological syntheses and accompanying time-space-event plots. These regional syntheses were used to produce an interpreted geological, metallogenic and geodynamic synthesis of eastern Australia.
This new synthesis provided the geodynamic framework to constrain known mineralisation and allow a predictive capability for potential new mineralisation. Outputs are delivered in three parts. Geological summaries and time-space-event plots are presented in Section 1. Our interpreted geological and geodynamic synthesis in Section 2, and associated metallogeny (known and predicted) for eastern Australia in Section 3.

Tags: AU, Earth Sciences, GA Publication, Published_External, Record, commodities, geodynamics, geology, stratigraphy
Organization: Geoscience Australia Data
Daly, NT, 1979 (P1102), 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 Daly, NT, 1979 survey were acquired in 1979 by the NT Government, and consisted of 31521 line-kilometres of data at 300m 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, NT, Published_External, airborne digital data, geophysical survey, geophysics, line, magnetic, magnetics, magnetism and palaeomagnetism, survey 1102, vector
Organization: Geoscience Australia Data
Wiluna:  1: 1 Million General Reference Topographic Map

This map is part of a series which comprises 50 maps which covers the whole of Australia at a scale of 1:1 000 000 (1cm on a map represents 10km on the ground). Each standard map covers an area of 6 degrees longitude by 4 degrees latitude or about 590 kilometres east to west and about 440 kilometres from north to south. These maps depict natural and constructed features including transport infrastructure (roads, railway airports), hydrography, contours, hypsometric and bathymetric layers, localities and some administrative boundaries, making this a useful general reference map.

Tags: 1M scale, Published_External, Topographic Map, Topology, cartography, mapping, topography, tourism
Organization: Geoscience Australia Data
GSQ Isa Georgetown Block A Qld magnetic vd1 grid geodetic

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 GSQ Isa Georgetown Block A Qld magnetic vd1 grid geodetic is a first vertical derivative of the Total Magnetic Intensity grid for the Isa-Georgetown Block A,QLD, 2000, Prospectivity Plus Initiative.
This grid has a cell size of 0.00096 degrees (approximately 104m). The grid has units of nanoTesla per km (or nT/km). The data used to produce the TMI grid was acquired in 2000 by the QLD Government, and consisted of 34868 line-kilometres of data at a line spacing between 200m and 400m, and 80m terrain clearance. A Fast Fourier Transform (FFT) process was applied to the original grid to calculate the first vertical derivative grid.

Tags: 1vd, Australia, EARTH SCIENCES, Earth sciences, GADDS2.0, NCI, Published_External, QLD, airborne digital data, first vertical derivative, geophysical survey, geophysics, grid, mag, magnetics, magnetism, palaeomagnetism, raster, survey 826
Organization: Geoscience Australia Data
GSWA Prince Regent Montague Merged TMI Grid Geodetic

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 GSWA Prince Regent Montague Merged TMI Grid Geodetic has a cell size of 0.00083 degrees (approximately 91m). The units are in nanoTesla (or nT). The data used to produce this grid was acquired in 1994 by the WA Government, and consisted of 187646 line-kilometres of data at a line spacing between 200m and 800m, and 50m terrain clearance.

Tags: Australia, EARTH SCIENCES, Earth sciences, GADDS2.0, NCI, Published_External, TMI, WA, airborne digital data, geophysical survey, geophysics, grid, mag, magnetics, magnetism, palaeomagnetism, raster, survey 1337, total magnetic intensity
Organization: Geoscience Australia Data
Goodooga 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-QLD, Published_External, Topographic Map, Topology
Organization: Geoscience Australia Data
Kakadu and Nitmiluk : A guide to the rocks, landforms, plants, animals, Aboriginal culture, and human impact

Kakadu and Nitmiluk (Katherine Gorge) National Parks are unique in Australia in terms of their diversity of geological, cultural and biological values. Both parks are renowned for sandstone plateaus with spectacular gorges and escarpments, and contain some of the oldest and finest collections of Aboriginal rock art in the world. The parks support a remarkable abundance and variety of plants and animals, many of them rare or not found anywhere else. Kakadu is also famous for its extensive wetlands and is one of the few World Heritage areas listed for both its natural and cultural values.
This guidebook has been written by experts from the Australian Geological Survey Organisation, Northern Territory Geological Survey, Environment Australia, Parks Australia, and the Parks and Wildlife Commission of the Northern Territory. Written for the non-specialist, the guidebook provides a concise and authoritative account of the rocks, landforms, plants, animals, Aboriginal culture and exploration history of the Kakadu and Nitmiluk National Parks. There is also information on places to visit, walking trails, camping facilities, commercial tours and helpful hints on getting the most from your visit.

Tags: AU-NT, Earth Sciences, GA Publication, Monograph, Published_External, geology, geoscience education, landforms, mineral deposits, remote sensing
Organization: Geoscience Australia Data
Kingston, WA, 1998 (P685), elevation line data

The Digital Elevation Model represents ground surface topography between points of known elevation. The elevation data was calculated using the altimeters and Global Positioning System (GPS) sensor used for the benefit of airborne magnetic and radiometric data on the same survey. The elevation is the height relative to the Australian Height Datum GDA94 (AUSGEOID09). The processed elevation data is checked for quality by GA geophysicists to ensure that the final data released by GA are fit-for-purpose.
 These line dataset from the Kingston, WA, 1998 survey were acquired in 1998 by the WA Government, and consisted of 47325 line-kilometres of data at 400m line spacing and 80m terrain clearance.

Tags: Australia, DEM, EARTH SCIENCES, Earth sciences, Elevation, GADDS2.0, Published_External, WA, airborne digital data, geophysical survey, geophysics, line, survey 685, terrain, vector
Organization: Geoscience Australia Data
Quirindi Gorge 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
Central Eromanga Basin Seismic Survey 1982: Operational Report

The Bureau of Mineral Resources, Geology and Geophysics (BMR) (now known as theAustralian Geological Survey Organisation (AGSO)) conducted a seismic survey in the centralpart of the Eromanga Basin from early July to late November 1982.
The seismic survey was part of the multi-disciplinary, geoscientific research project on the central Eromanga Basin (Harrison &amp; others, 1980), and was a continuation of the seismic programmes of 1980 (Wake-Dyster and Pinchin, 1981) and 1981 (Sexton and Taylor, 1983).The project aimed to gain knowledge of the structure, stratigraphy and lithology of the Eromanga and underlying sedimentary basins in order to study the geology and tectonicevolution of the area, and to provide basic information to assist in the exploration of the area for hydrocarbons.
The objectives of the 1982 BMR seismic survey were to extend some of the 1980 and 1981seismic lines further east across the Adavale Basin and to provide ties between private oilcompany seismic traverses with a number of important petroluem exploration wells (Figure 1). Some of these objectives were discussed by Mathur and Sex-ton (1981).
Five seismic traverses totalling 485 km of mainly 6-fold CMP reflection coverage wererecorded. These included Traverses 13, 11, 11A, 2 and a northern extension of 10. Gravitymeasurements were taken along these lines as well as Traverses 6, 7, 5, and 12 (1981 traverse lines). An expanding spread (Musgrave, 1962) was recorded along Traverse 10.
This report presents details of operations and preliminary results of the seismic reflectionsurvey only. Operation statistics, spread and recording parameters, and personnel and equipment are listed in Appendices 1 to 3. 
Examples of reduced scale copies of the processed seismic sections and expanding reflection
spread are shown in Figures 2 and 3 respectively. Reduced scale copies of the other BMR1982 seismic traverses are shown in Finlayson et al, 1987, with seismic sections both at 0 to 4 seconds two-way travel (TWT) time and 0 to 20 seconds TWT time.

Tags: AU-QLD, Earth Sciences, GA Publication, Published_External, Record, seismics
Organization: Geoscience Australia Data
NTData (digital geology of the Northern Territory), Birrindudu

These data are a digital representation of information depicted on printed maps from the Australia 1:250 000 Geological Series produced by AGSO and the Northern Territory Geological Survey (NTGS) between 1963 and 1998.  The data are in a tiled format 
and are not seamless, although basic edgematching has been done where possible.  Tiles are arranged according to the standard Australian 1:250 000 sheet breakup.  The complete dataset is comprised of the 90 tiles covering the Northern Territory.

Tags: AU-NT, Earth Sciences, GIS Dataset, Published_External, Regional, dataset, geology
Organization: Geoscience Australia Data
Rawlins South Gravity Survey, CR20080992 (P200685), 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 Rawlins South Gravity Survey, CR20080992 (P200685) contains a total of 16 point data values acquired at a spacing of 1000 metres. The data is located in NT and were acquired in 2006, under project No. 200685 for Newmont Exploration Pty Ltd; Tanami Gold NL.

Tags: Australia, EARTH SCIENCES, Earth sciences, GADDS2.0, NCI, NT, Published_External, geophysical survey, geophysics, gravity, ground digital data, point, point located data, survey 200685
Organization: Geoscience Australia Data
Mount Elizabeth 1:250 000 topographic map

This map is part of the series that covers the whole of Australia at a scale of 1:250 000 (1cm on a map represents 2.5 km on the ground) and comprises 513 maps. This is the largest scale at which published topographic maps cover the entire continent. Each standard map covers an area of 1.5 degrees longitude by 1 degree latitude or about 150 kilometres from east to west and 110 kilometres from north to south. There are about 50 special maps in the series and these maps cover a non-standard area. Typically, where a map produced on standard sheet lines is largely ocean it is combined with its landward neighbour. These maps contain natural and constructed features including road and rail infrastructure, vegetation, hydrography, contours (interval 50m), localities and some administrative boundaries. The topographic map and data index shows coverage of the sheets. Product Specifications Coverage: The series covers the whole of Australia with 513 maps. Currency: Ranges from 1995 to 2009. 95% of maps have a reliability date of 1994 or later. Coordinates: Geographical and either AMG or MGA (post-1993) Datum: AGD66, GDA94, AHD. Projection: Universal Traverse Mercator (UTM) Medium: Paper, flat and folded copies.

Tags: 250K scale, AU-WA, Published_External, Topographic Map, Topology, topography
Organization: Geoscience Australia Data
Mawson Geomagnetic Observatory magnetic results, 1989

This report summarises the data from the Mawson Geomagnetic Observatory from January 1989 to December1989 inclusive.
Daily and hourly averages of each of the standard geomagnetic components (X, Y, Z, F, H, D and I) are given foreach month for all days, international quiet days and international disturbed days. The monthly average mean-hourly-values on international quiet days are graphed to show any regularity in diurnal variation and its changethroughout the year.
The recording systems and absolute calibrations of the data are described in detail in the Mawson GeophysicalObservatory Annual Report, 1989 (Crosthwaite, 1991).

Tags: Earth Sciences, GA Publication, Published_External, Record, geomagnetism
Organization: Geoscience Australia Data
Kerstens 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
Environmental consequences of saline groundwater intrusion into the Wimmera River, Victoria

Saline groundwater intrusions into lowland reaches of the Wimmera River, western Victoria, accumulated under low-flow conditions and formed stable saline pools. An extensive area of river downstream was affected, and almost all water in the channel during flow stoppages appeared to be of groundwater origin.  Water in these saline pools had conductivity up to seawater level ( &gt; 50000 EC units) , stable temperature of 14-20Â°C, low dissolved oxygen (&lt; 10% saturation), and low pH (6.1 - 6.4), in contrast with surface water (conductivity &lt; 4000 EC units, oxygen level &gt;60% saturation, and temperature 8- 12Â°C in winter and over 20Â°C in summer). Halocline, oxycline and thermocline depths generally coincided, especially in winter.  Salinity-related density stratification was very stable even in winter. The stratification pattern remained stable under low to moderate discharge (mean daily discharge &lt; 1000 ML / day) , although major flow events (&gt; 3000 ML / day) mixed or displaced most of the saline bottom layer. Saline pools which re-established within two months of flow decline had similar depth, temperature and conductivity to those found six months before. Under the prevailing intermittent flow regime, saline pools would be expected during the 7-month low-flow period (October to May) in most years. Stable stratification and associated severe hypoxia rendered much of the water in the pools uninhabitable by fish and other aerobic organisms; hypoxia rendered bed substrates and organic debris inaccessible for cover, feeding or resting, and probably reduced secondary production. The habitable area in many pools was confined to upper layers and shallow pool margins.  Severe deoxygenation and rapid short term changes in salinity and temperature occurred with a first flush, and displacement of partially mixed saline water produced secondary stratifications in deep pools downstream. Vertical conductivity gradients of &lt; 1000 EC units were associated with persistent deoxygenation at many sites as a result of this process. The total area affected by saline groundwater intrusions extended downstream far beyond the immediate area of the intrusion. The Wimmera River provides a model for other rivers in the Murray-Darling Basin where saline groundwater from rising water tables drains into them. The low-land sections of many rivers and streams proposed as sites for the disposal of saline water might have flow regimes and channel morphology conducive to the formation of stable saline pools.  Further studies are required to develop management and control measures to prevent large-scale environmental degradation of riverine habitats in the Murray-Darling Basin through rising water tables, increased groundwater drainage or deliberate disposal of saline water into rivers and streams.

Tags: Earth Sciences, GA Publication, Journal, Published_External, VIC
Organization: Geoscience Australia Data
Geochemical and reactive transport simulations of S.A. palaeochannel/sandstone hosted uranium systems

Geochemical and reactive transport simulations of S.A. palaeochannel/sandstone hosted uranium systems - PIRSA Uranium Systems Modelling Project

Tags: AU-SA, Ausmodel, Earth Sciences, PMD*CRC Publication, Published_External, pmd*CRC
Organization: Geoscience Australia Data