气候变化领域集成服务门户(CCPortal): The impact of eustatic sea-level fluctuations; temperature variations and nutrient-level changes since the Pliocene on tropical carbonate platform (Xisha Islands; South China Sea)

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DOI	10.1016/j.palaeo.2018.10.013
	The impact of eustatic sea-level fluctuations; temperature variations and nutrient-level changes since the Pliocene on tropical carbonate platform (Xisha Islands; South China Sea)
	Wu F.; Xie X.; Betzler C.; Zhu W.; Zhu Y.; Guo L.; Ma Z.; Bai H.; Ma B.
发表日期	2019
ISSN	0031-0182
起始页码	373
结束页码	385
卷号	514
英文摘要	Sedimentological, paleontological, and geochemical data from core XK-1 in the Xisha Islands, South China Sea, allow a detailed documentation of the evolution of the reef-bank system from the early Pliocene to the late Pleistocene and of the aeolianite deposits from the late Pleistocene to the Holocene. A bank characterized by heterozoan carbonates occurred until 1.7 Ma. Between 1.7 and 0.2 Ma, the system turned into a reef dominated by photozoan carbonates. After 0.2 Ma, the aeolianite deposits, composed of heterozoan skeletal grains, occupied this area. A Pliocene to Pleistocene decrease in the abundance of planktonic foraminifera and some benthic foraminifer species generally associated with deep water settings indicates a long-term shallowing-upwards trend, resulting from the large-scale eustatic sea-level falls. Seven exposure horizons are recorded in core XK-1, due to high-frequency sea-level changes. The thickness of the reef body in the individual cycles increased after the Middle Pleistocene transition. This is interpreted as a consequence of the increase in duration of the short-term sea-level highstands. The formation of heterozoan aeolianite deposits after 0.2 Ma is probably caused by climate cooling, related with the intensification of East Asian winter monsoon. The rapid increase in coral abundance at ~1.7 Ma correlates well with a sharp decline in nutrient level, recorded by decreases in geochemical nutrient indexes values, declines in bryozoan and red algae (rhodolith) abundance, and decreases in the abundance of foraminifer species indicative of elevated nutrient-level. This correlation indicates that the carbonate factory turnovers were also affected by nutrient-level fluctuations, which could be linked to a paleoceanographic reorganization. These results demonstrate that together with sea-level fluctuations, also paleoceanographic changes had a significant effect on the Pliocene-Holocene tropical carbonate system. © 2018 Elsevier B.V.
英文关键词	Carbonate factory; Cooling event; Middle Pleistocene transition; Nutrient
语种	英语
scopus关键词	abundance; benthic foraminifera; bryozoan; carbonate platform; cooling; coral; coral reef; deep water; eolian deposit; Holocene; paleoceanography; planktonic foraminifera; Pleistocene; Pliocene; red alga; sea level; sea level change; temperature gradient; Pacific Ocean; Paracel Islands; South China Sea; Anthozoa; Bryozoa; Foraminifera; Rhodophyta
来源期刊	Palaeogeography, Palaeoclimatology, Palaeoecology
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/151149
作者单位	College of Marine Science and Technology, China University of Geosciences, Wuhan, 430074, China; Institut für Geologie, Universität Hamburg, Bundesstrasse 55, Hamburg, 20146, Germany; China National Offshore Oil Corporation Ltd., Beijing, 100010, China; CAS Key Laboratory of Economic Stratigraphy and Palaogeography, Nanjing Institute of Geology and Palaeontology, Nanjing, 210008, China; Zhanjiang Branch of China National Offshore Oil Corporation, Enter Tech-Drilling & Production Co., Zhanjiang, 524057, China; Laboratory of Marine Geophysics and Georesource, Institute of Deep-sea Science and Engineering, CAS, Sanya, 572000, China
推荐引用方式 GB/T 7714	Wu F.,Xie X.,Betzler C.,et al. The impact of eustatic sea-level fluctuations; temperature variations and nutrient-level changes since the Pliocene on tropical carbonate platform (Xisha Islands; South China Sea)[J],2019,514.
APA	Wu F..,Xie X..,Betzler C..,Zhu W..,Zhu Y..,...&Ma B..(2019).The impact of eustatic sea-level fluctuations; temperature variations and nutrient-level changes since the Pliocene on tropical carbonate platform (Xisha Islands; South China Sea).Palaeogeography, Palaeoclimatology, Palaeoecology,514.
MLA	Wu F.,et al."The impact of eustatic sea-level fluctuations; temperature variations and nutrient-level changes since the Pliocene on tropical carbonate platform (Xisha Islands; South China Sea)".Palaeogeography, Palaeoclimatology, Palaeoecology 514(2019).