The Tamar conductivity anomaly

Details The Tamar conductivity anomaly The Tamar conductivity anomaly

Oct 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988pepi...52....8p&link_type=abstract

Physics of the Earth and Planetary Interiors, Volume 52, Issue 1-2, p. 8-22.

Physics

9

Scientific paper

Magneto-variational measurements in eastern Tasmania have shown the presence of a conductivity anomaly coinciding with the Tamar Lineament. Magneto-telluric observations indicate a shallow body (2-5 km deep) with a high conductivity (0.2-1 S m-1. Analogue model measurements made at the university of Victoria have been used to correct for the effect of the oceans surrounding Tasmania. Rather than model the form of the conducting body, the results have been interpreted in terms of current flowing in a NNW-SSE direction in a channel ~ 40 km wide with a sharp eastern edge and a more gradual tapering to the west. The most likely explanation of the high conductivity is fractured rock saturated with conducting pore fluids.

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