De Kock, M. O. and Kirschvink, J. L. (2004) Paleomagnetic Constraints on the Permian-Triassic Boundary in Terrestrial Strata of the Karoo Supergroup, South Africa: Implications for Causes of the End-Permian Extinction Event. Gondwana Research, 7 (1). pp. 175-183. ISSN 1342-937X. doi:10.1016/S1342-937X(05)70316-6. https://resolver.caltech.edu/CaltechAUTHORS:20130111-082506399
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Abstract
The closure of the Palaeozoic witnessed the greatest biotic crisis in earth history. Surprisingly little is known about the effects and timing of the terrestrial counterpart of the well-described End-Permian mass extinction from known marine successions worldwide. In the present study, reliable paleomagnetic results were obtained from a PT boundary section in the terrestrial Karoo Basin of South Africa. Permo-Triassic aged mudstones from a locality in the Eastern Cape Province yielded two magnetic chrons, reverse followed by normal (with the boundary possibly close to the reversal). This extends to results from a previous study: thereby jointly identifying a R/N/R polarity pattern for this boundary interval. The PTB interval is constrained below the red mudstones of the Beaufort Group at the present locality and within reverse-magnetised green mudstone, implying a diachronic relation between the marine and terrestrial End-Permian mass extinction events.
| Item Type: | Article | |||||||||
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| Additional Information: | © 2004 International Association for Gondwana Research, Japan. Manuscript received August 30,2002; accepted May 16, 2003. | |||||||||
| Subject Keywords: | Permian-Triassic boundary; extinction; paleomagnetism; Karoo Supergroup; South Africa | |||||||||
| Issue or Number: | 1 | |||||||||
| DOI: | 10.1016/S1342-937X(05)70316-6 | |||||||||
| Record Number: | CaltechAUTHORS:20130111-082506399 | |||||||||
| Persistent URL: | https://resolver.caltech.edu/CaltechAUTHORS:20130111-082506399 | |||||||||
| Official Citation: | M.O. De Kock, J.L. Kirschvink, Paleomagnetic Constraints on the Permian-Triassic Boundary in Terrestrial Strata of the Karoo Supergroup, South Africa: Implications for Causes of the End-Permian Extinction Event, Gondwana Research, Volume 7, Issue 1, January 2004, Pages 175-183, ISSN 1342-937X, 10.1016/S1342-937X(05)70316-6. | |||||||||
| Usage Policy: | No commercial reproduction, distribution, display or performance rights in this work are provided. | |||||||||
| ID Code: | 36311 | |||||||||
| Collection: | CaltechAUTHORS | |||||||||
| Deposited By: | Tony Diaz | |||||||||
| Deposited On: | 11 Jan 2013 22:06 | |||||||||
| Last Modified: | 09 Nov 2021 23:21 |
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