The early drift of the Indian plate
Abstract 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 Kergue...
Published in: | Scientific Reports |
---|---|
Main Authors: | , , , |
Other Authors: | , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Springer Science and Business Media LLC
2021
|
Subjects: | |
Online Access: | http://dx.doi.org/10.1038/s41598-021-90172-z http://www.nature.com/articles/s41598-021-90172-z.pdf http://www.nature.com/articles/s41598-021-90172-z |
id |
crspringernat:10.1038/s41598-021-90172-z |
---|---|
record_format |
openpolar |
spelling |
crspringernat:10.1038/s41598-021-90172-z 2023-05-15T14:10:00+02:00 The early drift of the Indian plate Jokat, Wilfried Altenbernd, Tabea Eagles, Graeme Geissler, Wolfram H. Bundesministerium für Bildung und Forschung Alfred-Wegener-Institut, Helmholtz-Zentrum für Polar- und Meeresforschung (AWI) 2021 http://dx.doi.org/10.1038/s41598-021-90172-z http://www.nature.com/articles/s41598-021-90172-z.pdf http://www.nature.com/articles/s41598-021-90172-z en eng Springer Science and Business Media LLC https://creativecommons.org/licenses/by/4.0 https://creativecommons.org/licenses/by/4.0 CC-BY Scientific Reports volume 11, issue 1 ISSN 2045-2322 Multidisciplinary journal-article 2021 crspringernat https://doi.org/10.1038/s41598-021-90172-z 2022-01-04T16:45:44Z Abstract 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 1-3 . 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 Springer Nature (via Crossref) Antarctic The Antarctic Kerguelen Indian Scientific Reports 11 1 |
institution |
Open Polar |
collection |
Springer Nature (via Crossref) |
op_collection_id |
crspringernat |
language |
English |
topic |
Multidisciplinary |
spellingShingle |
Multidisciplinary Jokat, Wilfried Altenbernd, Tabea Eagles, Graeme Geissler, Wolfram H. The early drift of the Indian plate |
topic_facet |
Multidisciplinary |
description |
Abstract 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 1-3 . 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. |
author2 |
Bundesministerium für Bildung und Forschung Alfred-Wegener-Institut, Helmholtz-Zentrum für Polar- und Meeresforschung (AWI) |
format |
Article in Journal/Newspaper |
author |
Jokat, Wilfried Altenbernd, Tabea Eagles, Graeme Geissler, Wolfram H. |
author_facet |
Jokat, Wilfried Altenbernd, Tabea Eagles, Graeme Geissler, Wolfram H. |
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 |
publisher |
Springer Science and Business Media LLC |
publishDate |
2021 |
url |
http://dx.doi.org/10.1038/s41598-021-90172-z http://www.nature.com/articles/s41598-021-90172-z.pdf http://www.nature.com/articles/s41598-021-90172-z |
geographic |
Antarctic The Antarctic Kerguelen Indian |
geographic_facet |
Antarctic The Antarctic Kerguelen Indian |
genre |
Antarc* Antarctic Antarctica |
genre_facet |
Antarc* Antarctic Antarctica |
op_source |
Scientific Reports volume 11, issue 1 ISSN 2045-2322 |
op_rights |
https://creativecommons.org/licenses/by/4.0 https://creativecommons.org/licenses/by/4.0 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1038/s41598-021-90172-z |
container_title |
Scientific Reports |
container_volume |
11 |
container_issue |
1 |
_version_ |
1766282025781690368 |