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Pandurra Formation

The Pandurra Formation is a thick, monotonous unit of unmetamorphosed, flat-lying, arenaceous redbed sediments restricted to the north eastern Gawler Craton (South Australia Geological Survey Bulletin, 54:139). The Cariewerloo Basin, which hosts the Pandurra Formation, has potential for unconformity-style Uranium. An important aspect of this exploration model are the depth and geometry of the cover-basement contact.

The Pandurra Formation 3D model was created primarily from two sources: drillhole stratigraphic logs obtained from SA_GEODATA and a selection of cross sections from Bulletin 54 and the Kingoonya and Port Augusta 250K map sheets.

The cross sections were brought into the 3D environment of Gocad and the interpreted top and bottom horizons of the Pandurra Formation were digitised. These points were then incorporated into the drillhole data set and gridded using Intrepid (www.intrepid-geophysics.com).

The final model includes the top and base of Pandurra Formation surfaces, all the drillholes and cross sections used to construct the model and Pandurra Formation thickness isopachs.

Pandurra Formation 3D sections

View a larger image of the 3D section (.jpg), opens in new window

 

Using the model

In order to increase its accessibility, the Pandurra model has been converted to .pdf format, allowing for maximum portability and eliminating the need for the end user to purchase any specialised software.
 
The user can fully interact with the model using Adobe Acrobat’s 3D Toolbar (Note: the toolbar varies with the version of Acrobat Reader):

  1. Rotate
  2. Spin
  3. Pan
  4. Zoom
  5. Default view
  6. Select view
  7. Toggle model tree
  8. Pause animation
  9. Use orthographic projection
  10. Model render mode
  11. Enable extra lighting
  12. Background colour (disabled if a gradient background is being used)

Adobe Acrobat 3D toolbar

The user can also:

  • Selectively activate and/or deactivate any geological unit, cross section or isopach 
  • Enable geological surfaces to be displayed as transparent, solid or as a solid-wireframe

Software Information
The models can be viewed with Acrobat Reader 8 as it incorporates 3D visualisation capabilities. Acrobat Reader 8 can be downloaded free from the Adobe website.

Download the Pandurra 3D model

Pandurra 3D model

 Download the Pandurra 3D Geology Model (.pdf 4.3Mb) opens in new window

Note: these models are presented as a 'proof of concept' only and their accuracy (spatial or otherwise) should not be relied upon for exploration or other decision making processes.