Imaging the electrical lithosphere of South Australia - 2D profiles and preliminary results of AusLAMP SA

Stephan Thiel; Graham Heinson; Steve Hill

doi:10.1071/ASEG2015ab277

24th International Geophysical Conference and Exhibition – Geophysics and Geology Together for Discovery

ISSN: 2202-0586
E-ISSN:

oa Imaging the electrical lithosphere of South Australia - 2D profiles and preliminary results of AusLAMP SA
Authors Stephan Thiel^a, Graham Heinson^b and Steve Hill^c
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^a Department of State DevelopmentGeological Survey of South Australia, Level 4, 101 Grenfell Street Adelaide, , SA, 5000, [email protected] ^b Geology and GeophysicsThe University of Adelaide, Adelaide, , SA, 5005, [email protected] ^c Department of State DevelopmentGeological Survey of South Australia, Level 4, 101 Grenfell Street Adelaide, , SA, 5000, [email protected]
Publisher: Australian Society of Exploration Geophysicists
Source: ASEG Extended Abstracts, Volume 2015, Issue 24th International Geophysical Conference and Exhibition – Geophysics and Geology Together for Discovery, Dec 2015, p. 1 - 3
DOI: https://doi.org/10.1071/ASEG2015ab277
- Published online: 01 Dec 2015

Abstract

The Australian Lithospheric Architecture Magnetotelluric Project (AusLAMP) has the goal of mapping the electrical resistivity of the Australian lithosphere to constrain the geodynamic framework of the continent. Between August 2014 and May 2015, 125 long-period magnetotelluric (MT) data will be collected across the Gawler Craton and the south-eastern part of South Australia at intervals of 50 km. Results will be compared to existing 3D models highlighting enhanced conductivity in the sub-lithospheric mantle of the Gawler Craton. Initial results of 1D depth transformations show a significant change in resistivity at mantle lithosphere depths (100 km). The results will also be tied to the newly acquired Eucla MT line and a new 1000 km NS MT profile extending north from the central Gawler Craton into the Arunta Province, NT.

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References

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Article Type: Research Article

Keyword(s): AusLAMP; Gawler Craton; lithosphere; magnetotellurics; South Australia

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oa Imaging the electrical lithosphere of South Australia - 2D profiles and preliminary results of AusLAMP SA

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