Continental deformation of Antarctica during Gondwana’s breakup


Contact
Florian.Wobbe [ at ] awi.de

Abstract

Geophysical data acquired along the Antarctic passive margins constrain the structure and geometry of the deformed continental crust. Crustal thickness estimates range between 7 and 50 km and the Antarctic continent–ocean transition zone (COTZ) extends up to 100–670 km towards the ocean. Continental deformation prior to rifting over a c. 100 million years long time span resulted in crustal stretching factors varying between 1.8 and 5.9. The time span of deformation was sufficiently large and the rifting velocity low enough to extend the margin by up to 300–400 km. Crustal thinning generates a significant subsidence and shallow water passages might already have developed during the rifting phase along the margin. Accounting for accurate continental margin deformation has also consequences for plate-tectonic reconstructions.



Item Type
Inbook
Authors
Divisions
Programs
Peer revision
Peer-reviewed
Publication Status
Published
Eprint ID
25680
DOI 10.1007/978-3-642-32235-8_4

Cite as
Wobbe, F. and Gohl, K. (2013): Continental deformation of Antarctica during Gondwana’s breakup / G. Lohmann ORCID: https://orcid.org/0000-0003-2089-733X , K. Grosfeld ORCID: https://orcid.org/0000-0001-5936-179X , D. Wolf-Gladrow ORCID: https://orcid.org/0000-0001-9531-8668 , A. Wegner , J. Notholt and V. Unnithan (editors) , Earth System Science: Bridging the gaps between disciplines—A multi-disciplinary Helmholtz Graduate Research School, Berlin Heidelberg, Springer, 7 p., ISBN: 978-3-642-32235-8 . doi: 10.1007/978-3-642-32235-8_4


Share


Citation

Research Platforms
N/A

Campaigns


Actions
Edit Item Edit Item