{"help": "https://data.gov.au/data/en/api/3/action/help_show?name=package_show", "success": true, "result": {"archived": false, "author_email": null, "contact_point": "clientservices@ga.gov.au", "creator_user_id": "c2fbbe4a-4ba0-4945-808b-67454605a4cf", "duplicate_score": 2, "geospatial_topic": [], "id": "9a454ac6-1365-42e4-9227-15368e708d1e", "isopen": false, "language": "eng", "license_id": "notspecified", "license_title": "notspecified", "maintainer": null, "maintainer_email": null, "metadata_created": "2025-10-16T17:14:17.841672", "metadata_modified": "2025-10-16T17:14:17.841678", "name": "great-artesian-basin-birkhead-walloon-aquitard-thickness-and-extent", "notes": "The Birkhead-Walloon Aquitard - Thickness and Extent data set, is one of a set that represents the hydrostratigraphic units of the Great Artesian Basin, which include five major aquifers, four intervening aquitards, and the Cenozoic cover to the GAB.\nThere are five layers in the Birkhead-Walloon Aquitard map data.\nA: Formation Extent\nB: Outcrop extent\nC: Isopach Raster\nD: Isopach Contours\nE: Data Point Locations\nThe datasets have been derived from the lithostratigraphic intercepts in drillhole data from petroleum exploration wells, water bores, and stratigraphic wells. Seismic correlation and assessment of hydrogeological character based on electrofacies have not been used. The working datasets for this study has been derived primarily from the following databases:\n\nPEPS-SA (Petroleum Exploration and Production System - South Australia) (Department of Primary Industries and Regions SA, 2011)\nWaterConnect Groundwater database (Govt. of SA, 2011)\nQPED (Queensland Petroleum exploration database) (Geological Survey of Queensland, 2010).\nGABLOG (Great Artesian Basin Well Log Dataset) (Habermehl, 2001)\nAdditional supplementary information was derived from published reports listed in the following section.\n\nThis is a regional interpretation for mapping at approximately 1:1 000 000 to produce a broad scale overview, and examination of small areas by collecting extra data is most likely to produce results that differ from this regional interpretation.\nThis dataset and associated metadata can be obtained from www.ga.gov.au, using catalogue number 81681.\nAssociated report reference:\nRansley, T., Radke, B., Feitz, A., Kellett, J., Owens, R., Bell, J. and Stewart, G., 2015.  Hydrogeological Atlas the Great Artesian Basin. Geoscience Australia. Canberra. [available from www.ga.gov.au using catalogue number 79790]\nREFERENCES:\nReferences - main data sources\n\nDepartment of Primary Industries and Regions SA (2011). Petroleum Exploration and Production System - South Australia (PEPS-SA).  Version 2011-06-15. Retrieved from http://www.pir.sa.gov.au/petroleum/access_to_data/peps-sa_database\nGeological Survey of Queensland (2010). Queensland Petroleum Exploration Data (QPED) database. Retrieved 25 September 2011, from http://mines.industry.qld.gov.au/geoscience/geoscience-wireline-log-data.htm.\nGeoscience Australia, 2013. Mesozoic Geology of the Carpentaria and Laura Basins (dataset). Scale 1:6000000. Geoscience Australia, Canberra. [available from www.ga.gov.au using catalogue number 75840]\nGovt. of South Australia (2011). WaterConnect Groundwater database [available at https://www.waterconnect.sa.gov.au].\nHabermehl, M. A. and J. E. Lau (1997). Hydrogeology of the Great Artesian Basin Australia (Map at scale 1:2,500,000). Canberra, Australian Geological Survey Organisation.\nO'Brien, P. E. (2011). The eastern edge of the Great Artesian Basin: relationships between the Surat and Clarence-Moreton basins. Internal report. Canberra, Geoscience Australia.\nWells, A.T. , O'Brien, P.E. 1994 Lithostratigraphic framework of the Clarence-Moreton Basin IN Wells, A.T. and O'Brien, P.E. (eds.) \"Geology and Petroleum Potential of the Clarence-Moreton Basin, New South Wales and Queensland\" Australian Geological Survey Organisation. 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