SCSIO OpenIR  > 中科院边缘海地质重点实验室
Diagenesis and Evolution of the Holocene Coquinite from the Haishan Island, Eastern Guangdong, China
Sun, J; Xu, H; Qiu, X; Zhan, W; Li, Y; hlxu@scsio.ac.cn
2009
发表期刊ACTA GEOLOGICA SINICA-ENGLISH EDITION
ISSN1000-9515
卷号83期号:1页码:70-80
摘要The coastal hard rock with a thickness of over 5 m and a distribution area of nearly 200 ha in the Haishan Island, south China, has long drawn researchers'attention. However, there were controversies over its formation and classification, and these controversies in turn lead to the dispute of sea level changes and coastal uplift-subsidence of this area. To investigate its diagenesis and evolution, petrographic analysis, elemental geochemistry, isotopic analysis, and radiocarbon dating were used in the present study. Radiocarbon dating indicates that the deposition of the Haishan Coquinite commenced in the mid Holocene and lasted to similar to 600 a B.P. Petrographic analysis shows that the Haishan Coquinite is cemented by low-Mg calcite, indicating that the cementation occurred in a meteoric environment. The elemental geochemistry and isotopic values demonstrate that the coquinite suffered strong leaching, which was thought to be responsible for the meteoric cementation of the coquinite. According to these results, the diagenesis of the coquinite is revealed: deposition of the Haishan Coquinite commenced in the mid Holocene in a shoal environment, initial cementation occurred and cement may be high-Mg calcite or aragonite; latterly the coquinite exposed to meteoric environment as a result of lowering of relative sea level, and the cement altered to low-Mg, which took the morphologies of bladed calcite rim and equant spar. A four-stage evolution model is proposed: (1) deposition stage, (2) initial cementation, (3) exposure to and cementation in meteoric environment, and (4) erosion stage. The published reports indicate that the hard rock should be designated as coquinite. Based on these studies, mid-Holocene sea level in this area was discussed, and the Haishan Island was proposed to uplift with a rate of similar to 5 mm/a in the last similar to 600 a.
部门归属[Sun Jinlong; Xu Huilong; Qiu Xuelin; Zhan Wenhuan; Li Yamin] Chinese Acad Sci, S China Sea Inst Oceanol, CAS Key Lab Marginal Sea Geol, Guangzhou 510301, Guangdong, Peoples R China; [Sun Jinlong; Li Yamin] Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China
关键词Beachrock Coquinite Diagenesis Evolution Model Mid Holocene Sea Level
学科领域Geosciences, Multidisciplinary
URL查看原文
收录类别sci
资助项目海洋地质
WOS记录号WOS:000263831000009
引用统计
被引频次:1[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.scsio.ac.cn/handle/344004/4654
专题中科院边缘海地质重点实验室
通讯作者hlxu@scsio.ac.cn
推荐引用方式
GB/T 7714
Sun, J,Xu, H,Qiu, X,et al. Diagenesis and Evolution of the Holocene Coquinite from the Haishan Island, Eastern Guangdong, China[J]. ACTA GEOLOGICA SINICA-ENGLISH EDITION,2009,83(1):70-80.
APA Sun, J,Xu, H,Qiu, X,Zhan, W,Li, Y,&hlxu@scsio.ac.cn.(2009).Diagenesis and Evolution of the Holocene Coquinite from the Haishan Island, Eastern Guangdong, China.ACTA GEOLOGICA SINICA-ENGLISH EDITION,83(1),70-80.
MLA Sun, J,et al."Diagenesis and Evolution of the Holocene Coquinite from the Haishan Island, Eastern Guangdong, China".ACTA GEOLOGICA SINICA-ENGLISH EDITION 83.1(2009):70-80.
条目包含的文件
条目无相关文件。
个性服务
推荐该条目
保存到收藏夹
查看访问统计
导出为Endnote文件
相关权益政策
暂无数据
收藏/分享
所有评论 (0)
暂无评论
 

除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。