nerc.ac.uk

Electrical structure across a major ice-covered fault belt in northern Victoria Land (East Antarctica)

Armadillo, E.; Ferraccioli, F. ORCID: https://orcid.org/0000-0002-9347-4736; Tabellario, G.; Bozzo, E.. 2004 Electrical structure across a major ice-covered fault belt in northern Victoria Land (East Antarctica). Geophysical Research Letters, 31 (10), L10615. 4, pp. https://doi.org/10.1029/2004GL019903

Before downloading, please read NORA policies.
[img] Text
2004GL019903.pdf - Published Version
Restricted to NERC registered users only

Download (280kB) | Request a copy

Abstract/Summary

A Geomagnetic Depth Sounding profile was performed across the glaciated Rennick Graben and the adjacent fault-bounded terranes of northern Victoria Land in East Antarctica. Induction arrows analysis and a 2D inversion model provide a unique deep electrical resistivity window beneath these fault zones. The electrical resistivity break across the Lanterman Fault is apparently restricted to the upper crust, suggesting that this strike-slip fault may not represent a deep lithospheric suture. Further east, a westward-dipping conductor is traced to a depth of 40 km beneath the Robertson Bay Terrane. It may image a remnant of the paleo-Pacific oceanic plate, which subducted beneath the Bowers Terrane. Within the Wilson Terrane, the Rennick Graben is an upper-crust resistive block. The Rennick Graben lacks a deep crustal or upper mantle conductor, in contrast to several continental rifts. However, similar resistive lower crust underlies some other major strike-slip fault belts.

Item Type: Publication - Article
Digital Object Identifier (DOI): https://doi.org/10.1029/2004GL019903
Programmes: BAS Programmes > Antarctic Science in the Global Context (2000-2005) > Antarctica in the Dynamic Global Plate System
ISSN: 0094-8276
NORA Subject Terms: Glaciology
Earth Sciences
Date made live: 19 May 2011 14:48 +0 (UTC)
URI: https://nora.nerc.ac.uk/id/eprint/12096

Actions (login required)

View Item View Item

Document Downloads

Downloads for past 30 days

Downloads per month over past year

More statistics for this item...