Formation Mechanism of Beach Rocks and Its Controlling Factors in Coral Reef Area, Qilian Islets and Cays, Xisha Islands, China

doi:10.1007/s12583-018-0981-3

CORC > 南海海洋研究所 > 中国科学院南海海洋研究所 > 中科院边缘海地质重点实验室

	Formation Mechanism of Beach Rocks and Its Controlling Factors in Coral Reef Area, Qilian Islets and Cays, Xisha Islands, China
	Shen, Dishu 1; Zhao, Na 2; Shen, Jian-Wei
刊名	JOURNAL OF EARTH SCIENCE
	2019
卷号	30 期号:4 页码:728
关键词	beach rock cementation micritization coral reef Qilian Islets and Cays the South China Sea
ISSN号	1674-487X
DOI	10.1007/s12583-018-0981-3
英文摘要	Beach rock, which forms at the intertidal zone, is a natural barrier to protect beach and island from wave erosion. The formation mechanism of beach rocks is significant in the study of surface carbonate diagenesis and protection of island. Beach rocks in Qilian Islets and Cays were formed about 500-700 a BP, neither its composition nor sedimentary structure experienced intense post-reformation. Beach rocks in Qilian Islets and Cays are mainly composed of reef-building skeletal fragments and bioclasts without terrigenous sediments. This study focused on the types and morphologies of cements in beach rocks of Qilian Islets and Cays, and its cementation mechanisms and influencing factors. Biological activities, such as micritization caused by microbial activities and algae binding action, play an important role in the initial stage of bioclast transformation and promote the subsequent early marine and early meteoric cementation. Acicular aragonite induced by early marine cementation is well developed in beach rocks, especially in those samples from Medium Islet. Early meteoric cementation is not common as marine cementation, generally presenting granular and meniscus cements. The main factors affecting the formation and development of beach rocks in Qilian Islets and Cays include sediment source, hydrodynamic condition, climate, sea level change and anthropogenic impacts.
内容类型	期刊论文
源URL	[http://ir.scsio.ac.cn/handle/344004/17939]
专题	南海海洋研究所_中科院边缘海地质重点实验室
作者单位	1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 2.Chinese Acad Sci, South China Sea Inst Oceanol, CAS Key Lab Ocean & Marginal Sea Geol, Guangzhou 510301, Guangdong, Peoples R China 3.Chongqing City Management Coll, Huxi Higher Educ Mega Ctr, Chongqing 401331, Peoples R China
推荐引用方式 GB/T 7714	Shen, Dishu,Zhao, Na,Shen, Jian-Wei. Formation Mechanism of Beach Rocks and Its Controlling Factors in Coral Reef Area, Qilian Islets and Cays, Xisha Islands, China[J]. JOURNAL OF EARTH SCIENCE,2019,30(4):728, 738.
APA	Shen, Dishu,Zhao, Na,&Shen, Jian-Wei.(2019).Formation Mechanism of Beach Rocks and Its Controlling Factors in Coral Reef Area, Qilian Islets and Cays, Xisha Islands, China.JOURNAL OF EARTH SCIENCE,30(4),728.
MLA	Shen, Dishu,et al."Formation Mechanism of Beach Rocks and Its Controlling Factors in Coral Reef Area, Qilian Islets and Cays, Xisha Islands, China".JOURNAL OF EARTH SCIENCE 30.4(2019):728.