The early drift of the Indian plate
Plate kinematic models propose that India and Sri Lanka (INDSRI) separated from Antarctica by extremely slow seafloor spreading that started in early Cretaceous times, and that a long-distance ridge jump left a continental fragment stranded off the Antarctic margin under the Southern Kerguelen Plate...
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ftawi:oai:epic.awi.de:54172 2023-05-15T13:45:22+02:00 The early drift of the Indian plate Jokat, Wilfried Altenbernd, Tabea Eagles, Graeme Geissler, Wolfram 2021-05-24 application/pdf https://epic.awi.de/id/eprint/54172/ https://epic.awi.de/id/eprint/54172/1/Jokat_et_al-2021-Scientific_Reports.pdf https://rdcu.be/clbQK https://hdl.handle.net/10013/epic.3cd0d878-2534-411d-9cd6-b96f8f0510ce https://hdl.handle.net/ unknown https://epic.awi.de/id/eprint/54172/1/Jokat_et_al-2021-Scientific_Reports.pdf https://hdl.handle.net/ Jokat, W. orcid:0000-0002-7793-5854 , Altenbernd, T. orcid:0000-0002-2295-9250 , Eagles, G. orcid:0000-0001-5325-0810 and Geissler, W. orcid:0000-0001-6807-555X (2021) The early drift of the Indian plate , Scientific Reports, 11 (10796) . doi:10.1038/s41598-021-90172-z <https://doi.org/10.1038/s41598-021-90172-z> , hdl:10013/epic.3cd0d878-2534-411d-9cd6-b96f8f0510ce EPIC3Scientific Reports, 11(10796) Article isiRev 2021 ftawi https://doi.org/10.1038/s41598-021-90172-z 2021-12-24T15:46:21Z Plate kinematic models propose that India and Sri Lanka (INDSRI) separated from Antarctica by extremely slow seafloor spreading that started in early Cretaceous times, and that a long-distance ridge jump left a continental fragment stranded off the Antarctic margin under the Southern Kerguelen Plateau. Here, we present newly acquired magnetic and deep wide-angle seismic data that require a fundamental re-evaluation of these concepts. The new data clearly define the onset of oceanic crust in the Enderby Basin and off southern Sri Lanka, and date its formation with unprecedented confidence. The revised timing indicates that India and Sri Lanka detached from Antarctica earlier in the east than in the west. Furthermore, no compelling evidence for an extinct spreading axis is found in the Enderby Basin. A refined plate motion model indicates that India and Sri Lanka departed from Antarctica without major rift jumps, but by the action of three spreading ridges with different timings and velocities that must have been accommodated by significant intracontinental deformation. Article in Journal/Newspaper Antarc* Antarctic Antarctica Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) Antarctic Indian Kerguelen The Antarctic Scientific Reports 11 1 |
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 |
Plate kinematic models propose that India and Sri Lanka (INDSRI) separated from Antarctica by extremely slow seafloor spreading that started in early Cretaceous times, and that a long-distance ridge jump left a continental fragment stranded off the Antarctic margin under the Southern Kerguelen Plateau. Here, we present newly acquired magnetic and deep wide-angle seismic data that require a fundamental re-evaluation of these concepts. The new data clearly define the onset of oceanic crust in the Enderby Basin and off southern Sri Lanka, and date its formation with unprecedented confidence. The revised timing indicates that India and Sri Lanka detached from Antarctica earlier in the east than in the west. Furthermore, no compelling evidence for an extinct spreading axis is found in the Enderby Basin. A refined plate motion model indicates that India and Sri Lanka departed from Antarctica without major rift jumps, but by the action of three spreading ridges with different timings and velocities that must have been accommodated by significant intracontinental deformation. |
format |
Article in Journal/Newspaper |
author |
Jokat, Wilfried Altenbernd, Tabea Eagles, Graeme Geissler, Wolfram |
spellingShingle |
Jokat, Wilfried Altenbernd, Tabea Eagles, Graeme Geissler, Wolfram The early drift of the Indian plate |
author_facet |
Jokat, Wilfried Altenbernd, Tabea Eagles, Graeme Geissler, Wolfram |
author_sort |
Jokat, Wilfried |
title |
The early drift of the Indian plate |
title_short |
The early drift of the Indian plate |
title_full |
The early drift of the Indian plate |
title_fullStr |
The early drift of the Indian plate |
title_full_unstemmed |
The early drift of the Indian plate |
title_sort |
early drift of the indian plate |
publishDate |
2021 |
url |
https://epic.awi.de/id/eprint/54172/ https://epic.awi.de/id/eprint/54172/1/Jokat_et_al-2021-Scientific_Reports.pdf https://rdcu.be/clbQK https://hdl.handle.net/10013/epic.3cd0d878-2534-411d-9cd6-b96f8f0510ce https://hdl.handle.net/ |
geographic |
Antarctic Indian Kerguelen The Antarctic |
geographic_facet |
Antarctic Indian Kerguelen The Antarctic |
genre |
Antarc* Antarctic Antarctica |
genre_facet |
Antarc* Antarctic Antarctica |
op_source |
EPIC3Scientific Reports, 11(10796) |
op_relation |
https://epic.awi.de/id/eprint/54172/1/Jokat_et_al-2021-Scientific_Reports.pdf https://hdl.handle.net/ Jokat, W. orcid:0000-0002-7793-5854 , Altenbernd, T. orcid:0000-0002-2295-9250 , Eagles, G. orcid:0000-0001-5325-0810 and Geissler, W. orcid:0000-0001-6807-555X (2021) The early drift of the Indian plate , Scientific Reports, 11 (10796) . doi:10.1038/s41598-021-90172-z <https://doi.org/10.1038/s41598-021-90172-z> , hdl:10013/epic.3cd0d878-2534-411d-9cd6-b96f8f0510ce |
op_doi |
https://doi.org/10.1038/s41598-021-90172-z |
container_title |
Scientific Reports |
container_volume |
11 |
container_issue |
1 |
_version_ |
1766222469816909824 |