Aerogeophysical investigations in Dronning Maud Land


Contact
Matthias.Mieth [ at ] awi.de

Abstract

In the recent years aerogeophysical investigations in the Dronning Maud Land (DML) were concentrated at specific geological structures along the coast and the interior of this part of Antarctica. One survey covered the Astrid Ridge, situated on the continental margin of the African sector of Antarctica, with a systematic network of potential field measurements. The data prove the formerly assumed calm magnetic field over the southern part of the ridge and reveal weak magnetic lineations within. The northern part of the ridge bears strong positive anomalies, in contrast. Current modelling favours the formation of the southern part during the initial phase of breakup between Africa and Antarctica and of the northern part together with the southern edge of the Mozambique Ridge. A survey around the German Kohnen‐Station intended to identify the boundary of the Pan‐African orogeny and the old Antarctic craton. Here, indications for a suture zone have been found. This zone finds its expression in several sub‐parallel magnetised structures, which widen towards southwest. Yet, this structure is not completely mapped. The latest results of these investigations will be presented.



Item Type
Conference (Poster)
Authors
Divisions
Primary Division
Programs
Primary Topic
Peer revision
Not peer-reviewed
Publication Status
Published
Event Details
11th International Symposium on Antarctic Earth Sciences, 10 Jul 2011 - 15 Jul 2011, Edinburgh.
Eprint ID
33119
Cite as
Jokat, W. , Riedel, S. , Leinweber, V. T. , Steinhage, D. and Mieth, M. (2011): Aerogeophysical investigations in Dronning Maud Land , 11th International Symposium on Antarctic Earth Sciences, Edinburgh, 10 July 2011 - 15 July 2011 .


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