Journal
MARINE GEOLOGY
Volume 350, Issue -, Pages 71-83Publisher
ELSEVIER
DOI: 10.1016/j.margeo.2013.12.016
Keywords
carbonate platform; reef; eustasy; tectonic control; post-rift; South China Sea
Categories
Funding
- Fundamental Research Program of the Ministry of Sciences and Technology, China [2009CB219406]
- Knowledge Innovation Project of the Chinese Academy of Sciences [KZCX3-SW-229]
- National Scientific Foundation of China [91228208, 40930845]
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Newly acquired seismic data allow improved understanding of the architecture and evolution of isolated carbonate platforms on the continental slope of the northern South China Sea. The Xisha carbonate platforms were initiated on a basement high, the Xisha Uplift, in the early Miocene and have remained active up to the present. Their distribution is limited to pre-existing localized, fault-bounded blocks within the Xisha Uplift so individual platforms were small in size at the beginning of the Miocene. However, during the middle Miocene, the platform carbonate factories flourished across an extensive area with 55,900 km(2). The platforms began to backstep in response to a relative sea-level rise in the late Miocene. Platform-edge reefs, patch reefs, pinnacle reefs, atoll reefs and horseshoe reefs, all developed on various platforms. The distribution of platform carbonates shrank significantly during Pliocene-Quaternary time to isolated carbonate platforms, represented today by Xuande Atoll and Yongle Atoll. Tectonics and eustasy were the two main controls on platform development. Tectonics controlled both the initial topography for reef growth and the distribution of platforms, including those that survived the drowning event associated with the late Miocene rapid relative sea-level rise. Eustasy controlled high-frequency carbonate sequence development Crown Copyright (C) 2014 Published by Elsevier B.V. All rights reserved.
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