Riley, Teal R;
Carter, Andrew;
Burton-Johnson, Alex;
Leat, Philip T;
Hogan, Kelly A;
Bown, Paul R;
(2022)
Crustal block origins of the South Scotia Ridge.
Terra Nova
10.1111/ter.12613.
(In press).
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Abstract
The Cenozoic development of the Scotia Sea and opening of Drake Passage evolved in a complex tectonic setting with sea-floor spreading accompanied by the dispersal of continental fragments and the creation of rifted oceanic basins. The post-Eocene tectonic setting of the Scotia Sea is relatively well established, but Late Mesozoic palaeo-locations of many continental fragments prior to dispersal are largely unknown, with almost no geological control on the submerged banks. Detrital zircon analysis of dredged metasedimentary rocks of Bruce Bank from the South Scotia Ridge demonstrates a geological continuity with the South Orkney microcontinent (SOM) and also a clear geological affinity with the Trinity Peninsula Group metasedimentary rocks of the Antarctic Peninsula and components of the Cordillera Darwin Metamorphic Complex of Tierra del Fuego. Kinematic modelling indicates an Antarctic Plate origin for Bruce Bank and the SOM is the most plausible setting, prior to translation to the Scotia Plate during Scotia Sea opening.
| Type: | Article |
|---|---|
| Title: | Crustal block origins of the South Scotia Ridge |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1111/ter.12613 |
| Publisher version: | https://doi.org/10.1111/ter.12613 |
| Language: | English |
| Additional information: | Copyright © 2022 The Authors. Terra Nova published by John Wiley & Sons Ltd. This is an open access article under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/), which permits use, distribution and reproduction in any medium, provided the original work is properly cited. |
| UCL classification: | UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Earth Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS UCL |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10153948 |
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