Cenozoic continental rifting in the north-western Ross Sea
- Creators
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Davey, Fred J.
- Cande, Stephen
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Stock, Joann
Abstract
Marine gravity and seismic data are used to derive a preliminary crustal model for the Central Basin of the northern Ross Sea. The model is consistent with the presence of a thick (8 km) ocean crust. Existing geophysical data indicates the rift forming the Central Basin continues, with offsets, into the Central Trough further south. Using limited existing data on the age (61–53 Ma), and the amount and direction of extension of the Central rift system, an estimate is made of the pole of rotation for 61–53 Ma (79°S, 170°W and rotation 6°). This pole of rotation and those for 43–26 Ma and 26–10 Ma, previously derived, are used to reconstruct the northern Ross Sea margin prior to 61 Ma. The reconstruction shows a close fit of the continental components.
Additional Information
© 2021 The Royal Society of New Zealand. Received 17 Aug 2020, Accepted 14 Feb 2021, Published online: 04 Mar 2021. Gravity modelling used Geosource Oasis montaj software. Reviews by two anonymous reviewers are greatly appreciated. Disclosure statement: No potential conflict of interest was reported by the author(s). Data availability statement: Data sharing is not applicable to this article as no new data were created or analysed in this study.Additional details
- Eprint ID
- 108714
- Resolver ID
- CaltechAUTHORS:20210413-121133507
- Created
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2021-04-13Created from EPrint's datestamp field
- Updated
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2022-11-11Created from EPrint's last_modified field
- Caltech groups
- Seismological Laboratory, Division of Geological and Planetary Sciences