{"help": "https://data.gov.au/data/api/3/action/help_show?name=package_show", "success": true, "result": {"author_email": null, "contact_point": "bioregionalassessments@environment.gov.au", "creator_user_id": "2846d45e-3969-4419-a085-84f5716ede91", "duplicate_score": 1, "geospatial_topic": [], "id": "03a79a91-8f8a-4f9b-8745-18785c16657b", "isopen": false, "language": "eng", "license_id": "Creative Commons Attribution 4.0 International, http://creativecommons.org/licenses/by/4.0/, (c) Commonwealth of Australia (Geoscience Australia)", "license_title": "Creative Commons Attribution 4.0 International, http://creativecommons.org/licenses/by/4.0/, (c) Commonwealth of Australia (Geoscience Australia)", "maintainer": null, "maintainer_email": null, "metadata_created": "2018-12-07T00:37:09.349000", "metadata_modified": "2022-04-13T09:09:35.621429", "name": "580e6e5f-38a9-40b5-a41c-2949b5488e73", "notes": "## **Abstract** \n\nThis dataset and its metadata statement were supplied to the Bioregional Assessment Programme by a third party and are presented here as originally supplied.\n\n\n\nThe regional scale hydraulic interconnection across the base of the Great Artesian Basin data categorises the hydraulic nature of the base the GAB, through properties of rocks in direct contact below and above the base of the GAB. It indicates areas of potential connectivity between aquifers in older basins and the aquifers in the GAB sequence. \n\n\n\nThere are two data layers described as;\n\n\n\nA: Hydrogeological basement units in contact with the base of the Great Artesian Basin - representing a regional interpretation of basement stratigraphic units as hydrostratigraphic units, in contact with the base of the Jurassic-Cretaceous sequence of the GAB\n\n\n\nB: Base Great Artesian Basin hydrogeological units directly overlying hydrogeological basement - representing a regional interpretation of the of the Jurassic-Cretaceous stratigraphic units at the base of the GAB, as hydrostratigraphic units.\n\n\n\nBoth represent coverages of hydraulic character, with qualitative categories from Aquiclude, through Tight Aquitard, Leaky Aquitard, to Partial Aquifer and Aquifer.\n\n\n\nThis dataset and associated metadata can be obtained from www.ga.gov.au, using catalogue number 81685.\n\n## **Dataset History** \n\nSOURCE DATA: \n\nData was obtained from a variety of sources, as listed below:\n\n\n\n1.\tRansley TR and Smerdon BD (eds) (2012) Hydrostratigraphy, hydrogeology and system conceptualisation of the Great Artesian Basin. A technical report to the Australian Government from the CSIRO Great Artesian Basin Water Resource Assessment. CSIRO Water for a Healthy Country Flagship, Australia.\n\n2.\tStewart, A.J., Raymond, O.L., Totterdell, J.M., Zhang, W. & Gallagher, R., 2013. Australian Geological Provinces, 2013.01 edition. 2013.01 ed. Scale 1:2500000. Geoscience Australia, Canberra, Australia.\n\n3.\tUnpublished Arkaringa and Pedirka basin boundary data supplied by South Australian Department of Environment, Water and Natural Resources (Pers. Comm.  Daniel Wohling 2014)\n\n\n\nMETHOD:\n\nData layer 'A' (Hydrogeological basement units in contact with the base of the Great Artesian Basin) is modified from Ransley & Smerdon (2012), Figure 5.8 (12-6563-45), using data from Stewart et.al (2013) and unpublished, revised  Arkaringa and Pedirka basin boundaries, supplied by the South Australian Department of Environment, Water and Natural Resources. \n\n\n\nPolygons representing basement units in contact with base of the Great Artesian Basin. Compiled and used in conjunction with Polygons of Great Artesian Basin units directly overlying hydrogeological basement to represent the hydraulic interconnection between the Great Artesian Basin and basement units.\n\n\n\nData Layer 'B' (Base Great Artesian Basin hydrogeological units directly overlying hydrogeological basement) is a composite dataset derived from the following aquifer and aquitard extent layers in the data sources listed below.\n\n\n\n1.\tPaleogene-Neogene (Geocat No. 81675)\n\n2.\tWinton-Mackunda (Geocat No. 81676)\n\n3.\tRolling Downs (Geocat No. 81677)\n\n4.\tCadna-owie Hooray (Geocat No. 81678)\n\n5.\tWestbourne (Geocat No. 81679)\n\n6.\tAdori-Springbok (Geocat No. 81680)\n\n7.\tBirkhead-Walloon (Geocat No. 81681)\n\n8.\tHutton (Geocat No. 81682)\n\n9.\tEvergreen-Poolowanna (Geocat No. 81683)\n\n10.\tPrecipice (Geocat No. 81684)\n\n\n\nThe Aquifer and Aquitard extents were combined and the area of contact with the base of the GAB was derived for each formation extent layer;\n\n\n\nThis data set is the Aquifer/Aquitard layers at the bottom of the GAB - those in contact with the underlying basins. This data therefore provides information about the hydrological connectivity between the GAB and the basins beneath. The attribute table has been populated with aquifer properties which can be used to map the distribution. Some of the main Aquifers have been split based on the spatial change in aquifer properties.\n\n\n\nQAQC:\n\nData has undergone a QAQC verification process in order to capture and repair attribute and geometric errors. \n\n\n\nSOFTWARE:\n\nAll modifications/edits and geoprocessing were performed using ESRI ArcGIS 10 software.\n\n## **Dataset Citation** \n\nGeoscience Australia (2014) GABATLAS 24 hydraulic connectivity at GAB_base. Bioregional Assessment Source Dataset. 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It is one of a number of actions undertaken by the Australian Government to strengthen the science underpinning decision making on coal seam gas and large coal mining developments.\r\n\r\nThe Geological and Bioregional Assessment Program (2017 - 2021) assessed the potential impacts of shale and tight gas development on water and the environment. 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