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Biogeochemical significance of the Precambrian-Cambrian boundary carbon isotope anomaly; constraints from Oman

Amthor, J. E. and Grotzinger, J. P. and Schröder, S. and Bowring, S. A. and Matter, A. (2001) Biogeochemical significance of the Precambrian-Cambrian boundary carbon isotope anomaly; constraints from Oman. GeoArabia, 6 (2). p. 284. ISSN 1025-6059. https://resolver.caltech.edu/CaltechAUTHORS:20141015-092358401

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Abstract

Globally significant events of faunal turnover, tectonic reorganization, and biogeochemical change are now widely regarded to have closely coincided with the Precambrian. Cambrian boundary. Over the past decade, numerous studies have provided constraints on the age and duration of these events, the possible phylogenetic relationships between faunal assemblages, and the magnitude and significance of· contemporaneous shifts in the trace element composition and isotopic composition of C, O, S and Sr in the oceans. The Ara Group (Huqf Supergroup) of the South Oman Salt Basin (SOSB) presents an excellent succession with which to address this problem. At least six evaporite-carbonate sequences (A1 to A6) are observed in the SOSB. The carbonate rocks are tightly enclosed in a protective envelope of impermeable halite, and therefore these rocks have likely never exchanged isotopes with younger fluids.


Item Type:Article
ORCID:
AuthorORCID
Grotzinger, J. P.0000-0001-9324-1257
Additional Information:© 2001 Gulf PetroLink.
Issue or Number:2
Record Number:CaltechAUTHORS:20141015-092358401
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20141015-092358401
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:50394
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:15 Oct 2014 17:39
Last Modified:03 Oct 2019 07:23

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