Oaklands Basin - Jerilderie Gravity survey data
Centred on the town of Jerilderie, the Oakland Basin - Jerilderie survey covers an area of 25 000 square kilometres extending from Darlington Point to the Victorian border. Over 2 700 gravity readings were acquired in June/July 2009 at a station spacing of 4 km x 4 km with limited infill in the basin at 2 km x 2 km spacing. The survey maps the extension into NSW of the Tabberabbera Zone, which is part of the Albury/Bega Terrane.
The new gravity data have more clearly defined highly prospective infra-basins, such as the Ovens Valley Graben, which have potential for hydrocarbons as well as potential for CO2 geostorage. The new data also better defines interpreted granites which may have potential for geothermal energy.
In regard to potential for mineral exploration, the new gravity data have improved the definition of the southern part of the regionally significant Bootheragandra Fault, which separates the Tabberabbera Zone from the Omeo Zone in NSW. The new data have also improved delineation of the fault-bounded Devonian Jindera Granite.
CD ROM Content
1. Oaklands-Jerilderie Gravity Data (Contractor: Daishat Pty Ltd)
Includes:
- Located data in ASEG-GDF2 format
- Grids of Bouguer gravity, elevation, terrain corrections, first vertical derivative Bouguer gravity
- Images as georectified .tif files of gridded data as above
2. Statewide Bouguer Gravity Data - merged files of new Daishat Pty Ltd data with existing NSWDPI data
Includes:
- Grids of Bouguer gravity employing a 500m gridBouguer gravity as .ecw image
- Bouguer gravity as georectified .tif image
- Bouguer gravity as georectified .jpg image
Further Information
David Robson, Chief Geophysicist, david.robson@industry.nsw.gov.au