Unlocking Value back from Geoscience Australia's legacy data sets

23 August 2017

Two 4wd vehicles camping out on the sand dunes in Canning Basin

S.W Canning Basin, WA. 1956.
Camping out in the Sand Dunes area.
Geoscience Australia (Ref G/5016)

The evolution of isotopic studies: adding value when the dating is dated

Geoscience Australia has non-destructively dated tens of thousands of zircons over the last 20-30 years, via SHRIMP. A meticulously maintained catalogue of the epoxy mounts and photo-mosaics has proven invaluable in allowing this zircon 'library' to be reused with newer isotopic techniques (Lu-Hf, O isotopes) aimed at understanding crustal evolution of the Australian continent.

Simon Bodorkos earned his PhD from Curtin University in 2001, and following three-year stints at the University of Melbourne and the Geological Survey of Western Australia, has spent the last 10 years conducting U-Pb SHRIMP research in the Geochronology Section at Geoscience Australia.

Adding value to Historic data and the importance of archiving

The correct archiving of data allows it to be retrieved and enhanced by reprocessing and modelled using current day techniques. The extensive Airborne Electromagnetic (AEM) surveys, conducted during 1990's, were never modelled due to the non-existence of suitable algorithms and computing capacity. Recent technical advancements now allow the data to be processed.

The Geoscience Australia's Australian National Virtual Geophysical Laboratory (ANVGL) allows stakeholders to use the latest AEM inversion and cloud hardware to add value to not only current day data but also the historic data. Modern processing of historic data can identify ore bodies using gravity and induced Polarisation data.

David McInnes is a geophysicists working at GA for a little over 15 months within the Geophysical Acquisition and Processing section. Prior to this he was a consultant geophysicists for 15 years, working throughout Australia, the Americas, eastern and northern Europe and Aisa.  In the consultancy role he designed and processed modelled and interpreted in-mine, near a mine and Greenfields geophysical exploration programs. 

Breathing New Life into old collections (Slide Based Collections)

Geoscience Australia and its predecessors has gathered a significant collection of slide based items (including: thin sections, micro and nano-fossils) from across Australia, Antarctica, Papua New Guinea and the region). Slides from Sir Douglas Mawson's expedition 1911-14, early Snowy Hydro investigations and other historic geological research areas have been unearthed.

Aging of the card based management systems necessitates the need to modernise and provide better access to this collection if it is to remain useful.

John Pring gained a Masters from University of New South Wales in 2007 and has previously worked in Defence and Centrelink (DHS) before joining Geoscience Australia in 2007 as a project manager.

This talk is presented as part of the Wednesday Seminar Series.

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Date: 23 August 2017
Time: 11.00am
Location: Sir Harold Raggatt Theatre, Geoscience Australia
Cost/bookings: Free, No bookings required
Audience: General/Technical
More information: talks@ga.gov.au