Three-dimensional geological modelling of the Galilee and central Eromanga basins, Australia: New insights into aquifer/aquitard geometry and potential influence of faults on inter-connectivity

Moya, Claudio, Raiber, Matthias, & Cox, Malcolm (2014) Three-dimensional geological modelling of the Galilee and central Eromanga basins, Australia: New insights into aquifer/aquitard geometry and potential influence of faults on inter-connectivity. Journal of Hydrology: Regional Studies, 2, pp. 119-139.

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Abstract

Study region

The Galilee and Eromanga basins are located in central Queensland, Australia. Both basins are components of the Great Artesian Basin which host some of the most significant groundwater resources in Australia.

Study focus

This study evaluates the influence of regional faults on groundwater flow in an aquifer/aquitard interbedded succession that form one of the largest Artesian Basins in the world. In order to assess the significance of regional faults as potential barriers or conduits to groundwater flow, vertical displacements of the major aquifers and aquitards were studied at each major fault and the general hydraulic relationship of units that are juxtaposed by the faults were considered. A three-dimensional (3D) geological model of the Galilee and Eromanga basins was developed based on integration of well log data, seismic surfaces, surface geology and elevation data. Geological structures were mapped in detail and major faults were characterised.

New hydrological insights for the region

Major faults that have been described in previous studies have been confirmed within the 3D geological model domain and a preliminary assessment of their hydraulic significance has been conducted. Previously unknown faults such as the Thomson River Fault (herein named) have also been identified in this study.

Impact and interest:

5 citations in Scopus
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ID Code: 79941
Item Type: Journal Article
Refereed: Yes
Additional URLs:
Keywords: 3D Geological Model, Galilee/Eromanga Basins, Coal Seam Gas, Great Artesian Basin, Faults, Aquifier/Aquitards Connectivity
DOI: 10.1016/j.ejrh.2014.08.007
ISSN: 22145818
Divisions: Current > Schools > School of Earth, Environmental & Biological Sciences
Current > Institutes > Institute for Future Environments
Current > QUT Faculties and Divisions > Science & Engineering Faculty
Copyright Owner: Copyright 2014 The Authors
Copyright Statement: This is an open access article under the CC BY-NC-ND license
Deposited On: 12 Jan 2015 23:38
Last Modified: 14 May 2015 01:55

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