NDLI: A fission track thermochronological study of King George and Livingston islands, South Shetland Islands (West Antarctica)

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A fission track thermochronological study of King George and Livingston islands, South Shetland Islands (West Antarctica)

Content Provider	Scilit
Author	Sell, I. Poupeau, G. González-Casado, J. M. López-Martínez, J.
Copyright Year	2004
Description	This paper reports the dating of apatite fission tracks in eleven rock samples from the South Shetland Archipelago, an island arc located to the north-west of the Antarctic Peninsula. Apatites from Livingston Island were dated as belonging to the Oligocene (25.8 Ma: metasediments, Miers Bluff Formation, Hurd Peninsula) through to the Miocene (18.8 Ma: tonalites, Barnard Point). Those from King George Island were slightly older, belonging to the Early Oligocene (32.5 Ma: granodiorites, Barton Peninsula). Towards the back-arc basin (Bransfield Basin), the apatite appears to be younger. This allows an opening rate of approximately 1.1 km $Ma^{−1}$ (during the Miocene–Oligocene interval) to be calculated for Bransfield Basin. Optimization of the apatite data suggests cooling to 100 ± 10°C was coeval with the end of the main magmatic event in the South Shetland Arc (Oligocene), and indicates slightly different tectonic-exhumation histories for the different tectonic blocks.
Related Links	https://www.cambridge.org/core/services/aop-cambridge-core/content/view/5A3395F6D36D20A68CB17B3E9F3CA464/S0954102004001907a.pdf/div-class-title-a-fission-track-thermochronological-study-of-king-george-and-livingston-islands-south-shetland-islands-west-antarctica-div.pdf
Ending Page	197
Page Count	7
Starting Page	191
ISSN	09541020
e-ISSN	13652079
DOI	10.1017/s0954102004001907
Journal	Antarctic Science
Issue Number	2
Volume Number	16
Language	English
Publisher	Cambridge University Press (CUP)
Publisher Date	2004-06-01
Access Restriction	Open
Subject Keyword	Antarctic Science Apatite Fission Track Dating Bransfield Basin Rifting Northern Antarctic Peninsula
Content Type	Text
Resource Type	Article
Subject	Geology Ecology, Evolution, Behavior and Systematics Oceanography

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