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Understanding carbonate ramp dynamics using δ^(13)C profiles: examples from the Neoproterozoic Buah Formation of Oman

Cozzi, Andrea and Allen, Philip A. and Grotzinger, John P. (2004) Understanding carbonate ramp dynamics using δ^(13)C profiles: examples from the Neoproterozoic Buah Formation of Oman. Terra Nova, 16 (2). pp. 62-67. ISSN 0954-4879. https://resolver.caltech.edu/CaltechAUTHORS:20181127-085739118

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Abstract

The Late Neoproterozoic Buah Formation (Nafun Group, Oman) is a carbonate unit outcropping in the Jabal Akhdar and Huqf areas. It is composed mostly of shallow‐water carbonates deposited on a distally steepened carbonate ramp. Correlation of two δ^(13)C isotope shifts shows that in the Jabal Akhdar ramp differentiation into fast and slow subsiding areas was followed by lateral progradation. In the Huqf area, however, a uniform scenario of upward shallowing of the facies and lateral progradation is demonstrated by chemostratigraphic timelines cross‐cutting the facies belts. The chemostratigraphic profiles show that the Buah Formation was deposited during sea‐level highstand conditions and that ramp differentiation was due to synsedimentary tectonics. High‐resolution correlation of δ^(13)C profiles from the same lithostratigraphic unit (whether Precambrian or Phanerozoic in age) lacking biostratigraphic data can shed light on carbonate systems dynamics, tectonic vs. eustatic controls on depositional sequences and basin subsidence.


Item Type:Article
Related URLs:
URLURL TypeDescription
https://doi.org/10.1111/j.1365-3121.2004.00528.xDOIArticle
ORCID:
AuthorORCID
Grotzinger, John P.0000-0001-9324-1257
Additional Information:© 2004 Blackwell Publishing Ltd. Received 16 April 2003; revised version accepted 18 December 2003. We are grateful for the financial and logistical support of Petroleum Development Oman.
Funders:
Funding AgencyGrant Number
Petroleum Development OmanUNSPECIFIED
Issue or Number:2
Record Number:CaltechAUTHORS:20181127-085739118
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20181127-085739118
Official Citation:Cozzi, A. , Allen, P. A. and Grotzinger, J. P. (2004), Understanding carbonate ramp dynamics using δ13C profiles: examples from the Neoproterozoic Buah Formation of Oman. Terra Nova, 16: 62-67. doi:10.1111/j.1365-3121.2004.00528.x
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:91210
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:27 Nov 2018 18:14
Last Modified:03 Oct 2019 20:32

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