The breakup of East Gondwana: A best-fit tectonic model
This data collection is associated with the publication: Gibbons, A. D., Whittaker, J. M., & Müller, R. D. (2013). The breakup of East Gondwana: Assimilating constraints from Cretaceous ocean basins around India into a best-fit tectonic model. Journal of Geophysical Research: Solid Earth, 118(3)...
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The University of Sydney
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Online Access: | https://doi.org/10.4227/11/5587A87EC4E5C https://doi.org/10.1002/jgrb.50079 https://researchdata.ands.org.au/breakup-east-gondwana-tectonic-model/616572 http://earthbyte.org/Resources/Gibbons_etal_2013_EGondwana.html |
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ftands:oai:ands.org.au::616572 |
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record_format |
openpolar |
institution |
Open Polar |
collection |
Research Data Australia (Australian National Data Service - ANDS) |
op_collection_id |
ftands |
language |
unknown |
topic |
Indian Ocean Kerguelen Plateau Madagascar Australia East Antarctica 85-East Ridge Afanasy Nikitin Seamounts Conrad Rise hotspot magnetic anomalies seafloor-spreading ridge jump plate kinematics mid-ocean ridges transform faults fracture zones plate reorganisations Cretaceous Cenozoic GPlates plate motion model plate boundaries East Gondwana Greater India Enderby Basin Wharton Basin Elan Bank Tectonics EARTH SCIENCES GEOLOGY Marine Geoscience Geodynamics GEOPHYSICS Expanding Knowledge in the Earth Sciences EXPANDING KNOWLEDGE Pure basic research |
spellingShingle |
Indian Ocean Kerguelen Plateau Madagascar Australia East Antarctica 85-East Ridge Afanasy Nikitin Seamounts Conrad Rise hotspot magnetic anomalies seafloor-spreading ridge jump plate kinematics mid-ocean ridges transform faults fracture zones plate reorganisations Cretaceous Cenozoic GPlates plate motion model plate boundaries East Gondwana Greater India Enderby Basin Wharton Basin Elan Bank Tectonics EARTH SCIENCES GEOLOGY Marine Geoscience Geodynamics GEOPHYSICS Expanding Knowledge in the Earth Sciences EXPANDING KNOWLEDGE Pure basic research The breakup of East Gondwana: A best-fit tectonic model |
topic_facet |
Indian Ocean Kerguelen Plateau Madagascar Australia East Antarctica 85-East Ridge Afanasy Nikitin Seamounts Conrad Rise hotspot magnetic anomalies seafloor-spreading ridge jump plate kinematics mid-ocean ridges transform faults fracture zones plate reorganisations Cretaceous Cenozoic GPlates plate motion model plate boundaries East Gondwana Greater India Enderby Basin Wharton Basin Elan Bank Tectonics EARTH SCIENCES GEOLOGY Marine Geoscience Geodynamics GEOPHYSICS Expanding Knowledge in the Earth Sciences EXPANDING KNOWLEDGE Pure basic research |
description |
This data collection is associated with the publication: Gibbons, A. D., Whittaker, J. M., & Müller, R. D. (2013). The breakup of East Gondwana: Assimilating constraints from Cretaceous ocean basins around India into a best-fit tectonic model. Journal of Geophysical Research: Solid Earth, 118(3), 808-822. doi:10.1002/jgrb.50079 Publication Abstract Published models for the Cretaceous seafloor-spreading history of East Gondwana result in unlikely tectonic scenarios for at least one of the plate boundaries involved and/or violate particular constraints from at least one of the associated ocean basins. We link East Gondwana spreading corridors by integrating magnetic and gravity anomaly data from the Enderby Basin off East Antarctica within a regional plate kinematic framework to identify a conjugate series of east-west-trending magnetic anomalies, M4 to M0 (~126.7–120.4 Ma). The mid-ocean ridge that separated Greater India from Australia-Antarctica propagated from north to south, starting at ~136Ma northwest of Australia, and reached the southern tip of India at ~126 Ma. Seafloor spreading in the Enderby Basin was abandoned at ~115 Ma, when a ridge jump transferred the Elan Bank and South Kerguelen Plateau to the Antarctic plate. Our revised plate kinematic model helps resolve the problem of successive two-way strike-slip motion between Madagascar and India seen in many previously published reconstructions and also suggests that seafloor spreading between them progressed from south to north from 94 to 84 Ma. This timing is essential for tectonic flow lines to match the curved fracture zones of the Wharton and Enderby basins, as Greater India gradually began to unzip from Madagascar from ~100 Ma. In our model, the 85-East Ridge and Kerguelen Fracture Zone formed as conjugate flanks of a “leaky” transform fault following the ~100Ma spreading reorganization. Our model also identifies the Afanasy Nikitin Seamounts as products of the Conrad Rise hotspot. Authors and Institutions Ana D. Gibbons - EarthByte Research Group, School of Geosciences, The University of Sydney, Australia Joanne M. Whittaker - EarthByte Research Group, School of Geosciences, The University of Sydney, Australia. ORCID: 0000-0002-3170-3935 R. Dietmar Müller - EarthByte Research Group, School of Geosciences, The University of Sydney, Australia. ORCID: 0000-0002-3334-5764 Overview of Resources Contained This data collection includes the all of the files needed to visualise, recreate, and interact with the plate motion model developed and published in Gibbons et al. (2013). Data used in the development of the plate motion model are also included. List of Resources Note: For details on the files included in this data collection, see “Description_of_Resources.txt”. Note: For information on file formats and what programs to use to interact with various file formats, see “File_Formats_and_Recommended_Programs.txt”. Rotation file for the tectonic model (.rot, 537 KB) Continent-ocean boundary geometries (.gpml, .kml, .txt, .shp, total 684 KB) Extinct ridge geometries (.gpml, .kml, .txt, .shp, total 414 KB) Fracture zone geometries (.gpml, .kml, .txt, .shp, total 6.8 MB) Isochron geometries (.gpml, .kml, .txt, .shp, total 4 MB) Large igneous province outlines (.gpml, .kml, .txt, .shp, total 279 KB) Magnetic anomaly picks (.gpmlz, .kml, .txt, .shp, total 17.5 MB) For more information on this data collection, and links to other datasets from the EarthByte Research Group please visit EarthByte For more information about using GPlates, including tutorials and a user manual please visit GPlates or EarthByte |
author2 |
Dietmar Muller (hasAssociationWith) Dietmar Muller (hasCollector) Joanne Whittaker (hasCollector) |
format |
Dataset |
title |
The breakup of East Gondwana: A best-fit tectonic model |
title_short |
The breakup of East Gondwana: A best-fit tectonic model |
title_full |
The breakup of East Gondwana: A best-fit tectonic model |
title_fullStr |
The breakup of East Gondwana: A best-fit tectonic model |
title_full_unstemmed |
The breakup of East Gondwana: A best-fit tectonic model |
title_sort |
breakup of east gondwana: a best-fit tectonic model |
publisher |
The University of Sydney |
url |
https://doi.org/10.4227/11/5587A87EC4E5C https://doi.org/10.1002/jgrb.50079 https://researchdata.ands.org.au/breakup-east-gondwana-tectonic-model/616572 http://earthbyte.org/Resources/Gibbons_etal_2013_EGondwana.html |
op_coverage |
Spatial: East Gondwana Spatial: Indian Ocean Spatial: Bounding Box: 30N, 6W; 60S, 6W; 60S, 160E; 30N, 160E Spatial: -5.9027222264561,-60.074047321703 -5.9027222264561,30.432764808463 160.73790277355,30.432764808463 160.73790277355,-60.074047321703 -5.9027222264561,-60.074047321703 |
long_lat |
ENVELOPE(41.000,41.000,-53.000,-53.000) ENVELOPE(-136.671,-136.671,63.833,63.833) ENVELOPE(67.000,67.000,-56.750,-56.750) ENVELOPE(157.817,157.817,-81.050,-81.050) |
geographic |
Antarctic Conrad Rise East Antarctica East Ridge Elan Bank Indian Kerguelen The Antarctic Wharton |
geographic_facet |
Antarctic Conrad Rise East Antarctica East Ridge Elan Bank Indian Kerguelen The Antarctic Wharton |
genre |
Antarc* Antarctic Antarctica East Antarctica |
genre_facet |
Antarc* Antarctic Antarctica East Antarctica |
op_source |
https://rdmp.sydney.edu.au/redbox/default |
op_relation |
https://researchdata.ands.org.au/breakup-east-gondwana-tectonic-model/616572 http://dx.doi.org/10.4227/11/5587A87EC4E5C http://doi.org/10.1002/jgrb.50079 http://earthbyte.org/Resources/Gibbons_etal_2013_EGondwana.html |
op_doi |
https://doi.org/10.4227/11/5587A87EC4E5C https://doi.org/10.1002/jgrb.50079 |
_version_ |
1766277472086654976 |
spelling |
ftands:oai:ands.org.au::616572 2023-05-15T14:05:30+02:00 The breakup of East Gondwana: A best-fit tectonic model Dietmar Muller (hasAssociationWith) Dietmar Muller (hasCollector) Joanne Whittaker (hasCollector) Spatial: East Gondwana Spatial: Indian Ocean Spatial: Bounding Box: 30N, 6W; 60S, 6W; 60S, 160E; 30N, 160E Spatial: -5.9027222264561,-60.074047321703 -5.9027222264561,30.432764808463 160.73790277355,30.432764808463 160.73790277355,-60.074047321703 -5.9027222264561,-60.074047321703 https://doi.org/10.4227/11/5587A87EC4E5C https://doi.org/10.1002/jgrb.50079 https://researchdata.ands.org.au/breakup-east-gondwana-tectonic-model/616572 http://earthbyte.org/Resources/Gibbons_etal_2013_EGondwana.html unknown The University of Sydney https://researchdata.ands.org.au/breakup-east-gondwana-tectonic-model/616572 http://dx.doi.org/10.4227/11/5587A87EC4E5C http://doi.org/10.1002/jgrb.50079 http://earthbyte.org/Resources/Gibbons_etal_2013_EGondwana.html https://rdmp.sydney.edu.au/redbox/default Indian Ocean Kerguelen Plateau Madagascar Australia East Antarctica 85-East Ridge Afanasy Nikitin Seamounts Conrad Rise hotspot magnetic anomalies seafloor-spreading ridge jump plate kinematics mid-ocean ridges transform faults fracture zones plate reorganisations Cretaceous Cenozoic GPlates plate motion model plate boundaries East Gondwana Greater India Enderby Basin Wharton Basin Elan Bank Tectonics EARTH SCIENCES GEOLOGY Marine Geoscience Geodynamics GEOPHYSICS Expanding Knowledge in the Earth Sciences EXPANDING KNOWLEDGE Pure basic research dataset ftands https://doi.org/10.4227/11/5587A87EC4E5C https://doi.org/10.1002/jgrb.50079 2020-01-05T20:41:51Z This data collection is associated with the publication: Gibbons, A. D., Whittaker, J. M., & Müller, R. D. (2013). The breakup of East Gondwana: Assimilating constraints from Cretaceous ocean basins around India into a best-fit tectonic model. Journal of Geophysical Research: Solid Earth, 118(3), 808-822. doi:10.1002/jgrb.50079 Publication Abstract Published models for the Cretaceous seafloor-spreading history of East Gondwana result in unlikely tectonic scenarios for at least one of the plate boundaries involved and/or violate particular constraints from at least one of the associated ocean basins. We link East Gondwana spreading corridors by integrating magnetic and gravity anomaly data from the Enderby Basin off East Antarctica within a regional plate kinematic framework to identify a conjugate series of east-west-trending magnetic anomalies, M4 to M0 (~126.7–120.4 Ma). The mid-ocean ridge that separated Greater India from Australia-Antarctica propagated from north to south, starting at ~136Ma northwest of Australia, and reached the southern tip of India at ~126 Ma. Seafloor spreading in the Enderby Basin was abandoned at ~115 Ma, when a ridge jump transferred the Elan Bank and South Kerguelen Plateau to the Antarctic plate. Our revised plate kinematic model helps resolve the problem of successive two-way strike-slip motion between Madagascar and India seen in many previously published reconstructions and also suggests that seafloor spreading between them progressed from south to north from 94 to 84 Ma. This timing is essential for tectonic flow lines to match the curved fracture zones of the Wharton and Enderby basins, as Greater India gradually began to unzip from Madagascar from ~100 Ma. In our model, the 85-East Ridge and Kerguelen Fracture Zone formed as conjugate flanks of a “leaky” transform fault following the ~100Ma spreading reorganization. Our model also identifies the Afanasy Nikitin Seamounts as products of the Conrad Rise hotspot. Authors and Institutions Ana D. Gibbons - EarthByte Research Group, School of Geosciences, The University of Sydney, Australia Joanne M. Whittaker - EarthByte Research Group, School of Geosciences, The University of Sydney, Australia. ORCID: 0000-0002-3170-3935 R. Dietmar Müller - EarthByte Research Group, School of Geosciences, The University of Sydney, Australia. ORCID: 0000-0002-3334-5764 Overview of Resources Contained This data collection includes the all of the files needed to visualise, recreate, and interact with the plate motion model developed and published in Gibbons et al. (2013). Data used in the development of the plate motion model are also included. List of Resources Note: For details on the files included in this data collection, see “Description_of_Resources.txt”. Note: For information on file formats and what programs to use to interact with various file formats, see “File_Formats_and_Recommended_Programs.txt”. Rotation file for the tectonic model (.rot, 537 KB) Continent-ocean boundary geometries (.gpml, .kml, .txt, .shp, total 684 KB) Extinct ridge geometries (.gpml, .kml, .txt, .shp, total 414 KB) Fracture zone geometries (.gpml, .kml, .txt, .shp, total 6.8 MB) Isochron geometries (.gpml, .kml, .txt, .shp, total 4 MB) Large igneous province outlines (.gpml, .kml, .txt, .shp, total 279 KB) Magnetic anomaly picks (.gpmlz, .kml, .txt, .shp, total 17.5 MB) For more information on this data collection, and links to other datasets from the EarthByte Research Group please visit EarthByte For more information about using GPlates, including tutorials and a user manual please visit GPlates or EarthByte Dataset Antarc* Antarctic Antarctica East Antarctica Research Data Australia (Australian National Data Service - ANDS) Antarctic Conrad Rise ENVELOPE(41.000,41.000,-53.000,-53.000) East Antarctica East Ridge ENVELOPE(-136.671,-136.671,63.833,63.833) Elan Bank ENVELOPE(67.000,67.000,-56.750,-56.750) Indian Kerguelen The Antarctic Wharton ENVELOPE(157.817,157.817,-81.050,-81.050) |