Aeromagnetic search for Cenozoic magmatism over the Admiralty Mountains Block (East Antarctica)

Cenozoic magmatic rocks of the Transantarctic Mountains provide an important window on the tectonic and magmatic processes of the West Antarctic Rift System. Previous aeromagnetic investigations in northern Victoria Land have delineated Cenozoic volcanic and intrusive complexes assigned to the McMur...

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Bibliographic Details
Main Authors: Armadillo, E., Ferraccioli, Fausto, Zunino, A., Bozzo, E., Rocchi, S., Armienti, P.
Other Authors: Cooper, A.K., Raymond, C.R.
Format: Book Part
Language:unknown
Published: National Academy Press 2007
Subjects:
Earth Sciences
Antarctic
East Antarctica
Victoria Land
Transantarctic Mountains
Daniell
Admiralty Mountains
Mariner Glacier
Malta Plateau
Daniell Peninsula
Trafalgar Glacier
Antarc*
Antarctica
Online Access:http://nora.nerc.ac.uk/id/eprint/15383/
http://pubs.usgs.gov/of/2007/1047/srp/srp075/of2007-1047srp075.pdf
Description
Summary:Cenozoic magmatic rocks of the Transantarctic Mountains provide an important window on the tectonic and magmatic processes of the West Antarctic Rift System. Previous aeromagnetic investigations in northern Victoria Land have delineated Cenozoic volcanic and intrusive complexes assigned to the McMurdo Volcanic Group and Meander Intrusives over the Transantarctic Mountains. We present a new aeromagnetic anomaly map for the region north of the Mariner Glacier to study the extent and spatial distribution of these Cenozoic rocks over the previously unexplored Admiralty Mountains. The new map shows that the Meander Intrusives are restricted to the coastal region between the Malta Plateau and the Daniell Peninsula. However, the McMurdo Volcanic Group rocks extend further inland, and may delineate a hitherto unrecognised volcano-tectonic rift zone, extending as far north as the Trafalgar Glacier.

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