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学科主题: Multidisciplinary Sciences
题名: Emerged fossil corals on the coast of northwestern Hainan Island, China: Implications for mid-Holocene sea level change and tectonic uplift
作者: [Yao YanTao ; Zhan WenHuan ; Sun JinLong ; Sun Jie] Chinese Acad Sci, South China Sea Inst Oceanol, CAS Key Lab Marginal Sea Geol, Guangzhou 510301, Guangdong, Peoples R China
通讯作者: yaoyt@scsio.ac.cn
关键词: fossil coral ; higher sea level ; tectonic uplift ; mid-Holocene ; coast of northwestern Hainan Island
刊名: CHINESE SCIENCE BULLETIN
发表日期: 2013
卷: 58, 期:23, 页:2869-2876
部门归属: 海洋地质
资助者: This work was supported by the National Natural Science Foundation of China (41006029 and 40976030) and the United Foundation of National Natural Science Foundation of China-Guangdong Natural Science Fund Committee (U0933006). The authors would like to thank the reviewers for their comments that help improve the manuscript.
摘要: Fossil corals are widespread on the coast of northwestern Hainan Island, China. Most of these corals are exposed during low tide levels, indicating that a higher sea level may have existed during their life time. The radiocarbon data introduced by this paper in combination with those from other sources show that the corals were alive mainly during the mid- to late-Holocene. Mid-Holocene sea levels 1-3 m higher than the present level were confirmed for adjacent coasts; however, the emerged corals on the investigated coast are not necessarily indicators of a higher eustatic sea level. They do predict relative sea levels of 1.5-3.4 m when using 1 m below the tidal datum as the upper limit of coral growth. However, using the Mean Lower Low Water as the coral's upper growth limit, the relative sea level on the non-volcanic coast was almost as high as the present level, whereas that on the volcanic coast was 0.4-2.0 m higher than present. Therefore, the exposure of these dead coral heads and their discrepancy in elevation may be the result of tectonic uplift caused by volcanic activities. From these results, the highest sea level of upward coral growth must be defined first when using fossil corals to reconstruct past sea levels. Meanwhile, vertical tectonics have to be taken into account as a significant factor when conducting high-resolution sea level reconstruction, although the South China coast is located in a "tectonically stable" region.
语种: 英语
原文出处: 查看原文
WOS记录号: WOS:000323343100013
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内容类型: 期刊论文
URI标识: http://ir.scsio.ac.cn/handle/344004/11122
Appears in Collections:中科院边缘海地质重点实验室_期刊论文

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Recommended Citation:
[Yao YanTao; Zhan WenHuan; Sun JinLong; Sun Jie] Chinese Acad Sci, South China Sea Inst Oceanol, CAS Key Lab Marginal Sea Geol, Guangzhou 510301, Guangdong, Peoples R China.Emerged fossil corals on the coast of northwestern Hainan Island, China: Implications for mid-Holocene sea level change and tectonic uplift,CHINESE SCIENCE BULLETIN,2013,58(23):2869-2876
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