Thickness of Paleogene-Neogene sequence overlying the Great Artesian Basin  (GABWRA)

## **Abstract** 

This dataset and its metadata statement were supplied to the Bioregional Assessment Programme by a third party and are presented here as originally supplied.



Thickness of Paleogene-Neogene sequence overlying the Great Artesian Basin Data is available as isopachs and raster. Isopachs are in Shapefile format. Rasters are in both ESRI grid and ASCII grid formats. This GIS data set was produced for the Great Artesian Basin Water Resource Assessment and used in: Figure 3.2 of Ransley 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. Figure 3.3 of Smerdon BD, Ransley TR, Radke BM and Kellett JR (2012) Water resource assessment for the Great Artesian Basin. A report to the Australian Government from the CSIRO Great Artesian Basin Water Resource Assessment. CSIRO Water for a Healthy Country Flagship, Australia.

## **Dataset History** 

SOURCE: Thickness of Paleogene-Neogene sequence was interpolated from thickness values calculated from drill-hole data from company well completion reports, from BMR and GSQ stratigraphic drilling, and from isopach contours from existing reports (references below). 

REFERENCES 

1. Chamberlain, T., K. Wilkinson, et al. (2004). Salinity Investigations Using Airborne Geophysics in the Lower Balonne Area, Southern Queensland, Department of Natural Resources and Mines. 

2. Gibson, D. L., B. S. Powell, et al. (1974). Shallow stratigraphic drilling, northern Cape York Peninsula, 1973. Record 1974/76. Australia, Bureau of Mineral Resources. 

3. Habermehl, M. A. (2001). Wire-line logged water bores in the Great Artesian Basin, Australia - digital data of logs and water bore data acquired by AGSO. Australian Geological Survey Organisation Bulletin 245. Canberra, Bureau of Rural Sciences: ix, 98 p. 

4. Kellett, J. R., B. Pearce, et al. (2004). Groundwater. Salinity investigations using airborne geophysics in the Lower Balonne area Southern Queensland. National Action Plan for Salinity and Water Quality. T. Chamberlain and K. Wilkinson. Australia, Bureau of Rural Sciences: 81-138.

5. Langford, R. P., G. E. Wilford, et al. (1995). Palaeogeographic Atlas of Australia. Volume 10 - Cainozoic. Canberra, Australian Geological Survey Organisation. 

6. Macaulay, S. & Kellett, J. (Eds) (2009). Mapping groundwater and salinity using airborne electromagnetics in the Lower Macquarie River Valley, New South wales. Bureau of Rural Sciences, Canberra. 

7. Moussavi-Harami, R. and E. Alexander (1998). "Tertiary stratigraphy and tectonics, Eromanga Basin region." MESA 8: 32-36. 

8. NSW Office of Water (2012a). Alluvium thickness in the Upper Darling. Digital Dataset. 

9. NSW Office of Water (2012b). Alluvium thickness in the Lower Namoi. Digital Dataset. 

10. PIRSA (2007). Petroleum and geothermal in South Australia. 19th Edition (DVD). Adelaide, Primary Industries and Resources South Australia, Division of Minerals and Energy Resources. 

11. Queensland Department of Natural Resources and Mines (2012) "Queensland Digital Exploration Reports (QDEX)". http://mines.industry.qld.gov.au/geoscience/company-exploration-reports.htm 

12. Senior, B.R., 1978 - The Whitula Formation, a new Tertiary stratigraphic unit. Appendix, p.49-50 In Senior, B.R., Mond, A.& Harrison, P.L., 1978 - Geology of the Eromanga Basin. Bureau of Mineral Resources, Bulletin 176, 102p. 

13. Senior, B. R., A. Mond, et al. (1978). Geology of the Eromanga Basin. Bulletin 167. Canberra, Bureau of Mineral Resources, Geology and Geophysics.



METHOD:

Data covering the areas of Upper Darling, Lower Namoi was supplied by the NSW government. Contours in the Macquarie region NSW were interpreted from the Cenozoic isopachs taken from Macaulay, S. & Kellett, J. (2009) Lower Balonne Deep Lead tertiary isopach contours captured from a National Action Plan for Salinity and Water Quality report (Chamberlain, T. & Wilkinson, K., 2004; Kellett et.al. 2004). Isopachs in the southern portion of the GAB were captured from the Cainozoic Structural Features page 22 of Palaeogeographic Atlas of Australia: Cainozoic (Langford & Wilford, 1995) Isopachs over the Poolowanna Trough and Cooper Basin region were taken from Tertiary Stratigraphy and Tectonics, Eromanga Basin (Moussavi-Harami, R. & Alexander, E., 1998) Isopachs in the central Eromanga Basin, Queensland came from Senior 1978. Position and boundary of the Condamine Basin from Klohn, Crippen & Berger, 2011 - feasibility of injecting CSG water into the central Condamine Alluvium - Summary. Report prepared for department of Environment and Resource Management, Queensland, 8p. Isopachs came from the Cainozoic Structural Features page 22 of Palaeogeographic Atlas of Australia: Cainozoic (Langford & Wilford, 1995) Drill-hole data sourced from PIRSA (2007) and GABLOG (Habermehl, 2001) databases, Gibson et al 1974, and well completion reports from GSQ (Queensland Department of Natural Resources and Mines, 2012). Data were used to interpolate a surface using the Topo to Raster tool in the ArcGIS Spatial analyst toolset and the resulting raster was clipped to the Great Artesian Basin Water Resource project boundary. Isopach contours were generated from the raster, using the Contour tool in the 3d analyst toolset in ArcGIS.



Further information can be found at http://www.ga.gov.au/metadata-gateway/metadata/record/gcat_76538

## **Dataset Citation** 

Geoscience Australia (2013) Thickness of Paleogene-Neogene sequence overlying the Great Artesian Basin  (GABWRA). Bioregional Assessment Source Dataset. Viewed 11 April 2016, http://data.bioregionalassessments.gov.au/dataset/efcb07c6-a0b3-49fa-bdb2-1cf31a67be37.

Tags: Gwydir subregion, geoscientificInformation
Organization: Bioregional Assessment Program