Crust and upper mantle in Dronning Maud Land/Antarctica retrieved from shear-wave splitting, receiver functions, seismic refraction and 3-D gravity modelling
The crust and upper mantle of Dronning Maud Land (DML), Antarctica, have been investigated using teleseismic data from broadband seismograph stations deployed at temporary and permanent locations and recordings from a seismic refraction experiment. For shear-wave splitting analyses the observed anis...
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ftawi:oai:epic.awi.de:16867 2024-09-15T17:47:07+00:00 Crust and upper mantle in Dronning Maud Land/Antarctica retrieved from shear-wave splitting, receiver functions, seismic refraction and 3-D gravity modelling Bayer, Bettina Müller, Christina Geissler, Wolfram Eaton, D. W. Jokat, Wilfried Eckstaller, Alfons 2007 application/pdf https://epic.awi.de/id/eprint/16867/ https://epic.awi.de/id/eprint/16867/1/Bay2007a.pdf https://hdl.handle.net/10013/epic.26697 https://hdl.handle.net/10013/epic.26697.d001 unknown https://epic.awi.de/id/eprint/16867/1/Bay2007a.pdf https://hdl.handle.net/10013/epic.26697.d001 Bayer, B. , Müller, C. , Geissler, W. orcid:0000-0001-6807-555X , Eaton, D. W. , Jokat, W. orcid:0000-0002-7793-5854 and Eckstaller, A. (2007) Crust and upper mantle in Dronning Maud Land/Antarctica retrieved from shear-wave splitting, receiver functions, seismic refraction and 3-D gravity modelling , 10th International Symposium on Antarctic Earth Science August 26 - September 1, 2007 University of California, Santa Barbara. . hdl:10013/epic.26697 EPIC310th International Symposium on Antarctic Earth Science August 26 - September 1, 2007 University of California, Santa Barbara. Conference notRev 2007 ftawi 2024-06-24T03:59:51Z The crust and upper mantle of Dronning Maud Land (DML), Antarctica, have been investigated using teleseismic data from broadband seismograph stations deployed at temporary and permanent locations and recordings from a seismic refraction experiment. For shear-wave splitting analyses the observed anisotropy can in most cases be related to major tectonic events that formed the geological features of the present-day Antarctic continent. We rule out an anisotropic contribution from recent asthenospheric flow. An abrupt change in fast axis direction of the shear-waves as well as a remarkable Moho jump beneath the Kottas mountains appears to mark a suture between the Grunehogna craton, a fragment of the Kalahari-Kaapvaal craton in southern Africa, and the Mesoproterozoic Namaqua-Natal belt. In general, the Moho increases from the coast towards the mountain ranges of Wohlthatmassif and Kottas, where thick crust between 45-53 km is found. The Vp/Vs-ratio are similar within geological units but different throughout DML. Conference Object Antarc* Antarctic Antarctica DML Dronning Maud Land Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
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Open Polar |
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Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
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ftawi |
language |
unknown |
description |
The crust and upper mantle of Dronning Maud Land (DML), Antarctica, have been investigated using teleseismic data from broadband seismograph stations deployed at temporary and permanent locations and recordings from a seismic refraction experiment. For shear-wave splitting analyses the observed anisotropy can in most cases be related to major tectonic events that formed the geological features of the present-day Antarctic continent. We rule out an anisotropic contribution from recent asthenospheric flow. An abrupt change in fast axis direction of the shear-waves as well as a remarkable Moho jump beneath the Kottas mountains appears to mark a suture between the Grunehogna craton, a fragment of the Kalahari-Kaapvaal craton in southern Africa, and the Mesoproterozoic Namaqua-Natal belt. In general, the Moho increases from the coast towards the mountain ranges of Wohlthatmassif and Kottas, where thick crust between 45-53 km is found. The Vp/Vs-ratio are similar within geological units but different throughout DML. |
format |
Conference Object |
author |
Bayer, Bettina Müller, Christina Geissler, Wolfram Eaton, D. W. Jokat, Wilfried Eckstaller, Alfons |
spellingShingle |
Bayer, Bettina Müller, Christina Geissler, Wolfram Eaton, D. W. Jokat, Wilfried Eckstaller, Alfons Crust and upper mantle in Dronning Maud Land/Antarctica retrieved from shear-wave splitting, receiver functions, seismic refraction and 3-D gravity modelling |
author_facet |
Bayer, Bettina Müller, Christina Geissler, Wolfram Eaton, D. W. Jokat, Wilfried Eckstaller, Alfons |
author_sort |
Bayer, Bettina |
title |
Crust and upper mantle in Dronning Maud Land/Antarctica retrieved from shear-wave splitting, receiver functions, seismic refraction and 3-D gravity modelling |
title_short |
Crust and upper mantle in Dronning Maud Land/Antarctica retrieved from shear-wave splitting, receiver functions, seismic refraction and 3-D gravity modelling |
title_full |
Crust and upper mantle in Dronning Maud Land/Antarctica retrieved from shear-wave splitting, receiver functions, seismic refraction and 3-D gravity modelling |
title_fullStr |
Crust and upper mantle in Dronning Maud Land/Antarctica retrieved from shear-wave splitting, receiver functions, seismic refraction and 3-D gravity modelling |
title_full_unstemmed |
Crust and upper mantle in Dronning Maud Land/Antarctica retrieved from shear-wave splitting, receiver functions, seismic refraction and 3-D gravity modelling |
title_sort |
crust and upper mantle in dronning maud land/antarctica retrieved from shear-wave splitting, receiver functions, seismic refraction and 3-d gravity modelling |
publishDate |
2007 |
url |
https://epic.awi.de/id/eprint/16867/ https://epic.awi.de/id/eprint/16867/1/Bay2007a.pdf https://hdl.handle.net/10013/epic.26697 https://hdl.handle.net/10013/epic.26697.d001 |
genre |
Antarc* Antarctic Antarctica DML Dronning Maud Land |
genre_facet |
Antarc* Antarctic Antarctica DML Dronning Maud Land |
op_source |
EPIC310th International Symposium on Antarctic Earth Science August 26 - September 1, 2007 University of California, Santa Barbara. |
op_relation |
https://epic.awi.de/id/eprint/16867/1/Bay2007a.pdf https://hdl.handle.net/10013/epic.26697.d001 Bayer, B. , Müller, C. , Geissler, W. orcid:0000-0001-6807-555X , Eaton, D. W. , Jokat, W. orcid:0000-0002-7793-5854 and Eckstaller, A. (2007) Crust and upper mantle in Dronning Maud Land/Antarctica retrieved from shear-wave splitting, receiver functions, seismic refraction and 3-D gravity modelling , 10th International Symposium on Antarctic Earth Science August 26 - September 1, 2007 University of California, Santa Barbara. . hdl:10013/epic.26697 |
_version_ |
1810495757771341824 |