Cambrian Series 3 lithistid sponge-microbial reefs in Shandong Province,   North China: reef development after the disappearance of archaeocyaths

doi:10.1111/let.12118

CORC > 北京大学 > 地球与空间科学学院

	Cambrian Series 3 lithistid sponge-microbial reefs in Shandong Province, North China: reef development after the disappearance of archaeocyaths
	Adachi, Natsuko ; Kotani, Ayaka ; Ezaki, Yoichi ; Liu, Jianbo
刊名	LETHAIA
	2015
关键词	Cambrian lithistid sponge microbialite North China reef METAZOAN REEFS SEQUENCE STRATIGRAPHY ANTHASPIDELLID SPONGE MIDEAST KOREA SOUTH CHINA NAMA GROUP ORDOVICIAN BUILDUPS CONSTRUCTION PLATFORM
DOI	10.1111/let.12118
英文摘要	The Cambrian Series 3 Zhangxia Formation in Shandong Province, North China, includes small-scale lithistid sponge-microbial reefs. The lithistid sponges grew on oolitic and bioclastic sediments, which were stabilized by microbial activities. The relative abundances of microbial components (e.g. calcimicrobe Epiphyton and stromatolites) vary among the reefs. However, the microbial components commonly encrusted or bound the lithistid sponges, formed remarkable encrustations on the surfaces of the sponges. Epiphyton especially grew upward and downward. The lithistid sponges thus provided substrates for the attachment and development of microbes, and the microbes played essential roles as consolidators, by encrusting reef-building sponges. Additionally, the lithistid sponges were prone to degradation via microbial activities and diagenetic processes, and were thus preserved as micritic bodies, showing faint spicular networks or abundant spicules. Such low preservation potential within the reef environment obscured the presence of the sponges and their widespread contribution as reef-building organisms during the Cambrian. During the prolonged interval after the demise of archaeocyaths, purely microbial reefs, such as stromatolites and thrombolites have been considered to be the principal reef builders, in association with rare lithistid sponge-microbial associations. However, recent findings, including those from Shandong Province and Korea, suggest that the lithistid sponge-bearing reefs were more extensive during the Epoch 3 to the Furongian than previously thought. These lithistid sponge-microbial reefs were precursors of the sponge-microbial reefs that dominated worldwide in the Early Ordovician.; Scientific Research Fund of the Japan Society for the Promotion of Science [24740350, 24340130, 25610151]; National Natural Science Foundation of China [41272035, 41221001, 41290260]; SCI(E); ARTICLE; nadachi@naruto-u.ac.jp; a.kotani@sci.osaka-cu.ac.jp; ezaki@sci.osaka-cu.ac.jp; jbliu@pku.edu.cn; 3; 405-416; 48
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/418806]
专题	地球与空间科学学院
推荐引用方式 GB/T 7714	Adachi, Natsuko,Kotani, Ayaka,Ezaki, Yoichi,et al. Cambrian Series 3 lithistid sponge-microbial reefs in Shandong Province, North China: reef development after the disappearance of archaeocyaths[J]. LETHAIA,2015.
APA	Adachi, Natsuko,Kotani, Ayaka,Ezaki, Yoichi,&Liu, Jianbo.(2015).Cambrian Series 3 lithistid sponge-microbial reefs in Shandong Province, North China: reef development after the disappearance of archaeocyaths.LETHAIA.
MLA	Adachi, Natsuko,et al."Cambrian Series 3 lithistid sponge-microbial reefs in Shandong Province, North China: reef development after the disappearance of archaeocyaths".LETHAIA (2015).