Indentor-escape, delamination and orogenic collapse of the ca. 600-500 Ma East African/Antarctic Orogen in Mozambique and Dronning Maud Land (East Antarctica)

The East African/Antarctic Orogen (EAAO) is one of the largest orogenic belts on the planet, resulting from the collision of various parts of East and West- Protogondwana between ca. 600 and 550 Ma. The central and southern parts of the orogen are typified by high-grade rocks, representing the overp...

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Bibliographic Details
Main Authors: Jacobs, Joachim, Thomas, Robert J., Ueda, Kosuke, Kleinhanns, Ilka, Bingen, Bernard, Engvik, Ane
Format: Text
Language:English
Published: Geological Society of America 2010
Subjects:
Earth Sciences
Antarctic
East Antarctica
Dronning Maud Land
Antarc*
Antarctica
Online Access:http://nora.nerc.ac.uk/id/eprint/11305/
https://nora.nerc.ac.uk/id/eprint/11305/1/JJ_GSA_abs.pdf
http://gsa.confex.com/gsa/2010AM/finalprogram/
Description
Summary:The East African/Antarctic Orogen (EAAO) is one of the largest orogenic belts on the planet, resulting from the collision of various parts of East and West- Protogondwana between ca. 600 and 550 Ma. The central and southern parts of the orogen are typified by high-grade rocks, representing the overprinted margins of the various colliding continental blocks. New fieldwork and geochronology in northern Mozambique reveals a protracted polyphase Ediacaran/Cambrian deformation history. New age constraints reveal high-grade metamorphism at 600-550 Ma, overprinting and older basement.

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