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    Kalberg, T. and Gohl, K. 2014. The crustal structure and tectonic development of the continental margin of the Amundsen Sea Embayment, West Antarctica: implications from geophysical data. Geophysical Journal International, Vol. 198, Issue. 1, p. 327.


    Gohl, Karsten Uenzelmann-Neben, Gabriele Larter, Robert D. Hillenbrand, Claus-Dieter Hochmuth, Katharina Kalberg, Thomas Weigelt, Estella Davy, Bryan Kuhn, Gerhard and Nitsche, Frank O. 2013. Seismic stratigraphic record of the Amundsen Sea Embayment shelf from pre-glacial to recent times: Evidence for a dynamic West Antarctic ice sheet. Marine Geology, Vol. 344, p. 115.


    Gohl, Karsten Denk, Astrid Eagles, Graeme and Wobbe, Florian 2013. Deciphering tectonic phases of the Amundsen Sea Embayment shelf, West Antarctica, from a magnetic anomaly grid. Tectonophysics, Vol. 585, p. 113.


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Granitoids and dykes of the Pine Island Bay region, West Antarctica

  • Andrea Kipf (a1), Nicholas Mortimer (a2), Reinhard Werner (a1), Karsten Gohl (a3), Paul Van Den Bogaard (a1), Folkmar Hauff (a1) and Kaj Hoernle (a1)
  • DOI: http://dx.doi.org/10.1017/S0954102012000259
  • Published online: 14 May 2012
Abstract
Abstract

We present geochronological and geochemical data for eight plutonic rocks from five locations in the Pine Island Bay area of West Antarctica, collected during RV Polarstern expedition ANT-XXIII/4. Ar-Ar laser method dating yielded closure temperatures ages of c. 147–98 Ma for dioritic and granitic plutonic rocks and an age range of c. 97–95 Ma for granitoid and trachyandesitic dykes. Major and trace element compositions indicate that all rocks have an I-type subduction-related chemistry. There are no A-type granitic rocks in our dataset, and none are yet reported from the Pine Island Bay area. Our results confirm earlier models of post 100 Ma subduction on this part of the Gondwana margin.

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Corresponding author
*Corresponding author: rwerner@geomar.de
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Antarctic Science
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