The values and distribution patterns of the strontium (Sr) isotope ratio 87Sr/86Sr in Earth surface materials is of use in the geological, environmental and social sciences. Ultimately, the 87Sr/86Sr ratio of any mineral or biological material reflects its value in the rock that is the parent material to the local soil and everything that lives in and on it. In Australia, there are few large-scale surveys of 87Sr/86Sr available, and here we report on a new, low-density dataset using 112 catchment outlet (floodplain) sediment samples covering 529,000 km2 of inland southeastern Australia (South Australia, New South Wales, Victoria). The coarse (<2 mm) fraction of bottom sediment samples (depth ~0.6-0.8 m) from the National Geochemical Survey of Australia were fully digested before Sr separation by chromatography and 87Sr/86Sr determination by multicollector-inductively coupled plasma-mass spectrometry. The results show a wide range of 87Sr/86Sr values from a minimum of 0.7089 to a maximum of 0.7511 (range 0.0422). The median 87Sr/86Sr (± robust standard deviation) is 0.7199 (± 0.0112), and the mean (± standard deviation) is 0.7220 (± 0.0106). The spatial patterns of the Sr isoscape observed are described and attributed to various geological sources and processes. Of note are the elevated (radiogenic) values (≥~0.7270; top quartile) contributed by (1) the Palaeozoic sedimentary country rock and (mostly felsic) igneous intrusions of the Lachlan geological region to the east of the study area; (2) the Palaeoproterozoic metamorphic rocks of the central Broken Hill region; both these sources contribute fluvial sediments into the study area; and (3) the Proterozoic to Palaeozoic rocks of the Kanmantoo, Adelaide, Gawler and Painter geological regions to the west of the area; these sources contribute radiogenic material to the region mostly by aeolian processes. Regions of low 87Sr/86Sr (≤~0.7130; bottom quartile) belong mainly to (1) a few central Murray Basin catchments; (2) some Darling Basin catchments in the northeast; and (3) a few Eromanga geological region-influenced catchments in the northwest of the study area. The new spatial dataset is publicly available through the Geoscience Australia portal (https://portal.ga.gov.au/restore/cd686f2d-c87b-41b8-8c4b-ca8af531ae7e).

The annual offshore petroleum exploration acreage release is part of the government’s strategy to promote offshore oil and gas exploration. Each year, the government invites companies to bid for the opportunity to invest in oil and gas exploration in Australian waters. The 2022 acreage release consists of 10 areas offshore of the Northern Territory, Western Australia, Victoria, and the Ashmore and Cartier Islands.

The annual offshore petroleum exploration acreage release is part of the government’s strategy to promote offshore oil and gas exploration. Each year, the government invites companies to bid for the opportunity to invest in oil and gas exploration in Australian waters. The 2022 acreage release consists of 10 areas offshore of the Northern Territory, Western Australia, Victoria, and the Ashmore and Cartier Islands.

The annual offshore petroleum exploration acreage release is part of the government’s strategy to promote offshore oil and gas exploration. Each year, the government invites companies to bid for the opportunity to invest in oil and gas exploration in Australian waters. The 2022 acreage release consists of 10 areas offshore of the Northern Territory, Western Australia, Victoria, and the Ashmore and Cartier Islands.

Monash University under commission of Geoscience Australia produced an offshore wind capacity factor map assessed at a 150m hub height applying the Bureau of Meteorology 10 year (2009-2018) “Bureau of Meteorology Atmospheric high-resolution Regional Reanalysis for Australia” (BARRA) hindcast model. The wind capacity factor has been calculated using the bounding curve of all scaled power curves for wind turbines available within the Open Energy Platform as of 2021. Average wind capacity factor values were also calculated for the Vestas V126 3.45MW and the GE V130 3.2MW wind turbines and are available in this web map service.

Monash University under commission of Geoscience Australia produced an offshore wind capacity factor map assessed at a 150m hub height applying the Bureau of Meteorology 10 year (2009-2018) “Bureau of Meteorology Atmospheric high-resolution Regional Reanalysis for Australia” (BARRA) hindcast model. The wind capacity factor has been calculated using the bounding curve of all scaled power curves for wind turbines available within the Open Energy Platform as of 2021. Average wind capacity factor values were also calculated for the Vestas V126 3.45MW and the GE V130 3.2MW wind turbines and are available in this web map service.

This service uses the data supplied by the Department of Defence for use internally within Geoscience Australia. The following conditions must be adhered to in relation to the supplied data: A. The data must be handled in accordance with its classification, handling caveats and in accordance with the terms and conditions below; <b>· TOPOGRAPHIC DOMAIN </b> <b> · Australia – Defence training area data for Australia</b> · Dataset classification: OFFICIAL · Any derived products produced from the supplied data must credit the source of the data as: <b>“© Copyright Australian Geospatial Organisation - Department of Defence”.</b> · Terms of Use: <b>Expires 25 July 2023</b> B. The data must only be used for the following purposes: · Authorised user/s: <b><i>Australian Department of Defence or affiliates.</i></b> · Purpose of use: <b><i>For Official Australian Government Purposes Only.</i></b> · Term of use: <b>Enduring, unless stated otherwise</b> C. Any further intended use of the data requires written approval from the Manager Estate Geospatial. D. In addition, the data; without the written approval of Manager Estate Geospatial: · cannot be stored or used in a publicly accessible system domain and nor can it or any part of it be transferred via the internet; · cannot be disseminated to third parties who do not have a requirement to view the data for the purposes for which it has been provided; · cannot be duplicated, copied or otherwise reproduced for the purposes other than those permitted in these conditions and · on completion of the Terms of Use, any copy or product of the data must be returned to the Estate Geospatial or destroyed in a manner that prevents reconstruction and provide Estate Geospatial with written certification of such destruction. E. No rights in ownership or licence in the data are acquired by the customer and the customer is not entitled to sell, sublicense or trade in the data.

<div>This data is supplied by the Department of Defence for use internally within Geoscience Australia.</div><div>The following conditions must be adhered to in relation to supplied data:</div><div><br></div><div>A. The data must be handled in accordance with its classification, handling caveats and in accordance with the terms and conditions below; </div><div>· <strong>TOPOGRAPHIC DOMAIN </strong></div><div> ·&nbsp;<strong>Australia – Defence training area data for Australia</strong></div><div> ·&nbsp;Dataset classification: OFFICIAL</div><div> ·&nbsp;Any derived products produced from the supplied data must credit the source of the data as: <strong>“© Copyright Australian Geospatial Organisation - Department of Defence”</strong>.</div><div> ·&nbsp;Terms of Use: <strong>Expires 25 July 2023</strong></div><div><br></div><div>B. The data must only be used for the following purposes:</div><div>· Authorised user/s: <strong><em>Australian Department of Defence or affiliates.</em></strong></div><div>· Purpose of use: <strong><em>For Official Australian Government Purposes Only.</em></strong></div><div>· Term of use: <strong>Enduring, unless stated otherwise</strong></div><div><br></div><div>C.&nbsp;Any further intended use of the data requires written approval from the Manager Estate Geospatial.</div><div><br></div><div>D.&nbsp;In addition, the data; without the written approval of Manager Estate Geospatial:</div><div>·&nbsp;cannot be stored or used in a publicly accessible system domain and nor can it or any part of it be transferred via the internet;</div><div>·&nbsp;cannot be disseminated to third parties who do not have a requirement to view the data for the purposes for which it has been provided;</div><div>·&nbsp;cannot be duplicated, copied or otherwise reproduced for the purposes other than those permitted in these conditions and</div><div>·&nbsp;on completion of the Terms of Use, any copy or product of the data must be returned to the Estate Geospatial or destroyed in a manner that prevents reconstruction and provide Estate Geospatial with written certification of such destruction.</div><div><br></div><div>E. No rights in ownership or licence in the data are acquired by the customer and the customer is not entitled to sell, sublicense or trade in the data.</div>

Strontium isotopes (87Sr/86Sr) are useful in the earth sciences (e.g., recognising geological provinces, studying geological processes) as well in archaeological (e.g., informing on past human migrations), palaeontological/ecological (e.g., investigating extinct and extant taxa’s dietary range and migrations) and forensic (e.g., validating the origin of drinks and foodstuffs) sciences. Recently, Geoscience Australia and the University of Wollongong have teamed up to determine 87Sr/86Sr ratios in fluvial sediments selected from the low-density National Geochemical Survey of Australia (www.ga.gov.au/ngsa). The initial study targeted the northern parts of the Northern Territory and Queensland in Australia. The samples were taken from a depth of ~60-80 cm depth in floodplain deposits at or near the outlet of large catchments (drainage basins). A coarse grain-size fraction (<2 mm) was air-dried, sieved, milled then digested (hydrofluoric acid + nitric acid followed by aqua regia) to release total strontium. Preliminary results demonstrate a wide range of strontium isotopic values (0.7048 < 87Sr/86Sr < 1.0330) over the survey area, reflecting a large diversity of source rock lithologies, geological processes and bedrock ages. Spatial distribution of 87Sr/86Sr shows coherent (multi-point anomalies and gradients), large-scale (>100 km) patterns that appears to be consistent, in many places, with surface geology, regolith/soil type and/or nearby outcropping bedrock. For instance, the extensive black clay soils of the Barkly Tableland define a >500 km-long northwest-southeast trending low anomaly (87Sr/86Sr < 0.7182). Where carbonate or mafic igneous rocks dominate, a low to moderate strontium isotope signature is observed. In proximity to the outcropping Proterozoic metamorphic provinces of the Tennant, McArthur, Murphy and Mount Isa geological regions, high 87Sr/86Sr values (> 0.7655) are observed. A potential link between mineralisation and elevated 87Sr/86Sr values in these regions needs to be investigated in greater detail. Our results to-date indicate that incorporating soil/regolith strontium isotopes in regional, exploratory geoscience investigations can help identify basement rock types under (shallow) cover, constrain surface processes (e.g., weathering, dispersion), and, potentially, recognise components of mineral systems. Furthermore, the resulting strontium isoscape can also be utilised in archaeological, paleontological and ecological studies that aim to investigate past and modern animal (including humans) dietary habits and migrations.

This OGC conformant web service delivers data from Geoscience Australia's Reservoir, Facies and Hydrocarbon Shows (RESFACS) Database. RESFACS is an interpretative reservoir/facies database containing depth-based information regarding permeability, porosity, shows, depositional environment and biostratigraphy of petroleum wells.