A model of plate kinematics in Gondwana breakup
An accurate model of relative plate motions in Gondwana breakup is based on visual fitting of seafloor isochrons and fracture zones (FZ) from the Riiser-Larsen Sea and Mozambique Basin. Used predictively, the model precisely locates kinematic markers in the West Somali Basin, which allows the conclusi...
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Online Access: | https://epic.awi.de/id/eprint/21681/ https://doi.org/10.1111/j.1365-246X.2008.03753.x https://hdl.handle.net/10013/epic.34049 |
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ftawi:oai:epic.awi.de:21681 2023-05-15T17:07:26+02:00 A model of plate kinematics in Gondwana breakup Eagles, G. König, Matthias 2008 https://epic.awi.de/id/eprint/21681/ https://doi.org/10.1111/j.1365-246X.2008.03753.x https://hdl.handle.net/10013/epic.34049 unknown Eagles, G. and König, M. (2008) A model of plate kinematics in Gondwana breakup , Geophysical Journal International. . doi:10.1111/j.1365-246X.2008.03753.x <https://doi.org/10.1111/j.1365-246X.2008.03753.x> , hdl:10013/epic.34049 EPIC3Geophysical Journal International. Article isiRev 2008 ftawi https://doi.org/10.1111/j.1365-246X.2008.03753.x 2021-12-24T15:33:57Z An accurate model of relative plate motions in Gondwana breakup is based on visual fitting of seafloor isochrons and fracture zones (FZ) from the Riiser-Larsen Sea and Mozambique Basin. Used predictively, the model precisely locates kinematic markers in the West Somali Basin, which allows the conclusion that the spreading centres in the West Somali and Mozambique basins and the Riiser-Larsen Sea formed parts of the boundary between the same two plates. The locations of FZ and less well-defined isochrons from neighbouring regions are also consistent with their formation on other lengths of this same boundary and with its relocation from the West Somali Basin and northern Natal Valley to the West Enderby Basin and Lazarev Sea during chron M10n. Small independently moving plates thus played no role in the breakup of this core part of Gondwana. In an inversion procedure, the data from these areas yield more precise finite rotations that describe the history of the two plates separation. Breakup is most simply inter preted to have occur red in coincidence with Karoo volcanism, and a reconstruction based on the rotations shows the Lebombo and Mateke-Sabi monoclines and the Mozambique and Astrid ridges as two sets of conjugate volcanic margins. Madagascars pre-drift position can be used as a constraint to reassess the positions of India and Sri Lanka in the supercontinent. Article in Journal/Newspaper Lazarev Sea Riiser-Larsen Sea Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) Lazarev ENVELOPE(12.917,12.917,-69.967,-69.967) Lazarev Sea ENVELOPE(7.000,7.000,-68.000,-68.000) Riiser-Larsen ENVELOPE(50.667,50.667,-66.783,-66.783) Riiser-Larsen Sea ENVELOPE(24.000,24.000,-68.000,-68.000) Geophysical Journal International 173 2 703 717 |
institution |
Open Polar |
collection |
Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
op_collection_id |
ftawi |
language |
unknown |
description |
An accurate model of relative plate motions in Gondwana breakup is based on visual fitting of seafloor isochrons and fracture zones (FZ) from the Riiser-Larsen Sea and Mozambique Basin. Used predictively, the model precisely locates kinematic markers in the West Somali Basin, which allows the conclusion that the spreading centres in the West Somali and Mozambique basins and the Riiser-Larsen Sea formed parts of the boundary between the same two plates. The locations of FZ and less well-defined isochrons from neighbouring regions are also consistent with their formation on other lengths of this same boundary and with its relocation from the West Somali Basin and northern Natal Valley to the West Enderby Basin and Lazarev Sea during chron M10n. Small independently moving plates thus played no role in the breakup of this core part of Gondwana. In an inversion procedure, the data from these areas yield more precise finite rotations that describe the history of the two plates separation. Breakup is most simply inter preted to have occur red in coincidence with Karoo volcanism, and a reconstruction based on the rotations shows the Lebombo and Mateke-Sabi monoclines and the Mozambique and Astrid ridges as two sets of conjugate volcanic margins. Madagascars pre-drift position can be used as a constraint to reassess the positions of India and Sri Lanka in the supercontinent. |
format |
Article in Journal/Newspaper |
author |
Eagles, G. König, Matthias |
spellingShingle |
Eagles, G. König, Matthias A model of plate kinematics in Gondwana breakup |
author_facet |
Eagles, G. König, Matthias |
author_sort |
Eagles, G. |
title |
A model of plate kinematics in Gondwana breakup |
title_short |
A model of plate kinematics in Gondwana breakup |
title_full |
A model of plate kinematics in Gondwana breakup |
title_fullStr |
A model of plate kinematics in Gondwana breakup |
title_full_unstemmed |
A model of plate kinematics in Gondwana breakup |
title_sort |
model of plate kinematics in gondwana breakup |
publishDate |
2008 |
url |
https://epic.awi.de/id/eprint/21681/ https://doi.org/10.1111/j.1365-246X.2008.03753.x https://hdl.handle.net/10013/epic.34049 |
long_lat |
ENVELOPE(12.917,12.917,-69.967,-69.967) ENVELOPE(7.000,7.000,-68.000,-68.000) ENVELOPE(50.667,50.667,-66.783,-66.783) ENVELOPE(24.000,24.000,-68.000,-68.000) |
geographic |
Lazarev Lazarev Sea Riiser-Larsen Riiser-Larsen Sea |
geographic_facet |
Lazarev Lazarev Sea Riiser-Larsen Riiser-Larsen Sea |
genre |
Lazarev Sea Riiser-Larsen Sea |
genre_facet |
Lazarev Sea Riiser-Larsen Sea |
op_source |
EPIC3Geophysical Journal International. |
op_relation |
Eagles, G. and König, M. (2008) A model of plate kinematics in Gondwana breakup , Geophysical Journal International. . doi:10.1111/j.1365-246X.2008.03753.x <https://doi.org/10.1111/j.1365-246X.2008.03753.x> , hdl:10013/epic.34049 |
op_doi |
https://doi.org/10.1111/j.1365-246X.2008.03753.x |
container_title |
Geophysical Journal International |
container_volume |
173 |
container_issue |
2 |
container_start_page |
703 |
op_container_end_page |
717 |
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1766062840883445760 |