This service provides Australian surface hydrology, including natural and man-made features such as water courses (including directional flow paths), lakes, dams and other water bodies. The information was derived from the Surface Hydrology database, with a nominal scale of 1:250,000. The National Basins and Catchments are a national topographic representation of drainage areas across the landscape. Each basin is made up of a number of catchments depending on the features of the landscape. This service shows the relationship between catchments and basins. The service contains layer scale dependencies.

The Antarctic field notebooks contain the geological observations recorded by Bureau of Mineral Resources geologists during their trips to Antarctica. These csv files are the copies of the transcriptions made on the DigiVol transcription platform with the TEI tags removed. Please see the README file for full details. Also see HPRM8/TRIM folder A17/764 for full documentation about the project. These are the csv files that are used in the Biodiversity Heritage Library copy of the notebooks.

This Record contains nine detrital zircon U-Pb geochronological datasets (outlined in Table 1.1) obtained via Sensitive High-Resolution Ion Microprobe (SHRIMP) from nine sedimentary samples obtained from the Geological Survey of Western Australia (GSWA) Harvey 1 well. Analysis was supported by the GSWA and Royalties for Regions Exploration Incentive Scheme (EIS). GSWA Harvey 1 was drilled in the southern onshore Perth Basin, Western Australia, on the ‘Harvey Ridge’ structural feature (Millar and Reeve, 2014). The aim of the study was to provide insights into the potential provenance of sedimentary rocks of the southern Perth Basin. This record provides detailed results for each sample individually, including a description of the target mineral for geochronology, the relevant analytical data and a brief geochronological interpretation. The Leederville Formation sample has a 238U/206Pb maximum depositional age of 134 ± 3 Ma (2σ), which is consistent with the Early Cretaceous (Hauterivian–Aptian), biostratigraphically determined depositional age. Three Eneabba Formation samples yield individual 238U/206Pb maximum depositional ages, from shallowest to deepest, of 514 ± 15 Ma (2σ), 515 ± 11 Ma (2σ), and 505 ± 23 Ma (2σ), respectively. These ages are considerably older than the biostratigraphically determined Early Jurassic depositional age. Four Lesueur Sandstone samples yield individual 238U/206Pb maximum depositional ages, from shallowest to deepest, of 517 ± 14 Ma (2σ), 527 ± 9 Ma (2σ), 513 ± 24 Ma (95% confidence), and 513 ± 14 Ma (2σ), respectively. These ages are considerably older than the biostratigraphically determined Late Triassic depositional age. The single Sabina Sandstone sample has a 238U/206Pb maximum depositional age of 537 ± 9 Ma (2σ), which is considerably older than the biostratigraphically determined Early Triassic depositional age.

This report provides a description of the activities completed during the Bynoe Harbour Marine Survey, from 3 May and 17 May 2016 on the RV Solander (Survey GA4452/SOL6432). This survey was a collaboration between Geoscience Australia (GA), the Australian Institute of Marine Science (AIMS) and Department of Land Resource Management (Northern Territory Government) and the second of four surveys in the Darwin Harbour Seabed Habitat Mapping Program. This 4 year program (2014-2018) aims to improve knowledge of the marine environments in the Darwin and Bynoe Harbour regions by collating and collecting baseline information and developing thematic habitat maps that will underpin future marine resource management decisions. The program was made possible through funds provided by the INPEX-led Ichthys LNG Project to Northern Territory Government Department of Land Resource Management, and co-investment from Geoscience Australia and Australian Institute of Marine Science. The specific objectives of the Bynoe Harbour Marine Survey GA4452/SOL6432 were to: 1. Obtain high resolution geophysical (bathymetry) data for the deeper areas of Bynoe Harbour (<5 m), including Port Patterson; and, 2. Characterise substrates (acoustic backscatter properties, sub-bottom profiles, grainsize, sediment chemistry) the deeper areas of Bynoe Harbour (<5 m), including Port Patterson. Data acquired during the survey included: 698 km2 multibeam sonar bathymetry, water column and backscatter; 102 Smith-McIntyre grabs, 104 underwater camera drops, 29 sub-bottom profile lines and 34 sound velocity profiles.

As part of a multidisciplinary study of the region by Geoscience Australia and the geological surveys of New South Wales and Queensland, the mineral systems at the Cuttaburra and F1 prospects have been investigated with the aim of better understanding the prospectivity of the southern Thomson Orogen. Samples from three drill holes at the Cuttaburra prospect and three drill holes at the F1 prospect were studied in detail petrographically and analysed for the following: whole-rock geochemistry; S isotopes; Pb isotopes; molybdenite Re-Os geochronology; cassiterite U-Pb geochronology; and white mica 40Ar/39Ar geochronology. The results have been integrated with existing zircon U-Pb geochronology and company data to better characterise the geology, mineralisation, alteration, timing and geochemistry of the mineral systems. A new two-stage model of mineral system formation has been developed in which early Mo-W and later Au-base metal mineralisation both formed at ~425-430 Ma, probably coevally with granitoids that intruded Cambrian or younger metasedimentary rocks.

The Antarctic field notebooks contain the geological observations recorded by Bureau of Mineral Resources geologists during their trips to Antarctica between 1948 – 1980s. Files include a scanned copy of the original handwritten field notebook, transcription of the notebook’s contents transcribed by volunteers and validated by an experienced geologist, and a csv file of the transcription with Text Encoding Initiative (TEI) tags. The original Antarctic field notebooks are held at the N.H. (Doc) Fisher Geoscience Library at Geoscience Australia, Canberra.

The Antarctic field notebooks contain the geological observations recorded by Bureau of Mineral Resources geologists during their trips to Antarctica between 1948 – 1980s. Files include a scanned copy of the original handwritten field notebook, transcription of the notebook’s contents transcribed by volunteers and validated by an experienced geologist, and a csv file of the transcription with Text Encoding Initiative (TEI) tags. The original Antarctic field notebooks are held at the N.H. (Doc) Fisher Geoscience Library at Geoscience Australia, Canberra.

The Antarctic field notebooks contain the geological observations recorded by Bureau of Mineral Resources geologists during their trips to Antarctica between 1948 – 1980s. Files include a scanned copy of the original handwritten field notebook, transcription of the notebook’s contents transcribed by volunteers and validated by an experienced geologist, and a csv file of the transcription with Text Encoding Initiative (TEI) tags. The original Antarctic field notebooks are held at the N.H. (Doc) Fisher Geoscience Library at Geoscience Australia, Canberra.

The Browse Basin is located offshore on Australia's North West Shelf and is a proven hydrocarbon province hosting gas with associated condensate and where oil reserves are typically small. The assessment of a basin's oil potential traditionally focuses on the presence or absence of oil-prone source rocks. However, light oil can be found in basins where source rocks are gas-prone and the primary hydrocarbon type is gas-condensate. Oil rims form whenever such fluids migrate into reservoirs at pressures less than their dew point (saturation) pressure. By combining petroleum systems analysis with geochemical studies of source rocks and fluids (gases and liquids), four Mesozoic petroleum systems have been identified in the basin. This study applies petroleum systems analysis to understand the source of fluids and their phase behaviour in the Browse Basin. Source rock richness, thickness and quality are mapped from well control. Petroleum systems modelling that integrates source rock property maps, basin-specific kinetics, 1D burial history models and regional 3D surfaces, provides new insights into source rock maturity, generation and expelled fluid composition. The principal source rocks are Early-Middle Jurassic fluvio-deltaic coaly shales and shales within the J10-J20 supersequences (Plover Formation), Middle-Late Jurassic to Early Cretaceous sub-oxic marine shales within the J30-K10 supersequences (Vulcan and Montara formations) and K20-K30 supersequences (Echuca Shoals Formation). All of these source rocks contain significant contributions of land-plant derived organic matter and within the Caswell Sub-basin have reached sufficient maturities to have transformed most of the kerogen into hydrocarbons, with the majority of expulsion occurring from the Late Cretaceous until present.

The Stavely Project is a collaboration between Geoscience Australia and the Geological Survey of Victoria. During 2014, fourteen pre-competitive stratigraphic drill holes were completed in the prospective Stavely region in western Victoria in order to better understand subsurface geology and its potential for a variety of mineral systems. Prior to drilling, existing airborne magnetic data were analysed and new refraction seismic, reflection seismic and gravity data were acquired as part of a pre-drilling geophysical acquisition program. The aim of this geophysical program was to provide cover thickness estimates at the drill site locations prior to the drilling program commencing, in order to reduce the geological and financial risk. Passive seismic data were acquired post-drilling for benchmarking with the other methods against the completed drilling in order to assess a potential tool kit of geophysical methods for the explorer to predict reliably the cover thickness at the tenement scale.