Significance of fossilized microbes from the Cambrian stromatolites in the Tarim Basin, Northwest China

doi:10.1007/s11430-014-4935-z

	Significance of fossilized microbes from the Cambrian stromatolites in the Tarim Basin, Northwest China
	You XueLian 1,2,3; Sun Shu 2; Zhu JingQuan 2
刊名	SCIENCE CHINA-EARTH SCIENCES
	2014-12-01
卷号	57 期号:12 页码:2901-2913
关键词	Cambrian stromatolite fossilized microbe mediated dolomite
ISSN号	1674-7313
DOI	10.1007/s11430-014-4935-z
文献子类	Article
英文摘要	Samples of the Cambrian microbial dolomites were collected from Penglaiba section, a well-exposed stratigraphic section in the northwestern area of the Tarim Basin. This study provides an analogue for mediated dolomites that can precipitate in microbial mats and biofilms. The Cambrian stromatolitic dolomites were studied using high-resolution scanning electron microscopy. The results are as follows: (1) dolomites with 50 nm to 100 nm spherical nanostructures are aggregated into minerals of larger sphericities; (2) nanospherical dolomites of 50 nm to 170 nm diameter are densely arranged as dumbbell-shaped or chained aggregates; (3) silicified filaments, as well as dumbbell-shaped and chain arrangements, are preserved as important microstructures. On the basis of sedimentological, compositional, geochemical, and petrographic data, the microstructures were interpreted as nanoglobules that function as bacteria in the nucleation and filament mineralization stages. The microstructures function as such because they are wrapped in extracellular polymeric substance (EPS) or mucus and mineralized fossils. Silicification accounts for the exceptional preservation of microbial mat structures, including biofilms, as well as filamentous and coccoid microbes. In addition, EPS process is capable of binding different elements, with preference for Si, Mg, and Ca. Such suitable composition favors microbe mineralization and dolomite nucleation on organic substrates. These microscopic structures suggest bacterial mineralization and provide visual evidence for the origin of microbial dolomites.
WOS关键词	SULFATE-REDUCING BACTERIA ; EXTRACELLULAR POLYMERIC SUBSTANCES ; CYANOBACTERIAL-S-LAYER ; CALCIUM-CARBONATE ; DOLOMITE PRECIPITATION ; INDUCED MINERALIZATION ; SOUTH-AUSTRALIA ; ORGANIC-MATTER ; COORONG REGION ; CASE-HISTORY
WOS研究方向	Geology
语种	英语
出版者	SCIENCE PRESS
WOS记录号	WOS:000346170700004
资助机构	National Natural Science Foundation of China(41402102) ; National Natural Science Foundation of China(41402102) ; National Natural Science Foundation of China(41402102) ; National Natural Science Foundation of China(41402102) ; Fundamental Research Funds for the Central Universities(2652014001) ; Fundamental Research Funds for the Central Universities(2652014001) ; Fundamental Research Funds for the Central Universities(2652014001) ; Fundamental Research Funds for the Central Universities(2652014001) ; National Science and Technology Major Project of the Ministry of Science and Technology of China(2011ZX05005-002-008HZ) ; National Science and Technology Major Project of the Ministry of Science and Technology of China(2011ZX05005-002-008HZ) ; National Science and Technology Major Project of the Ministry of Science and Technology of China(2011ZX05005-002-008HZ) ; National Science and Technology Major Project of the Ministry of Science and Technology of China(2011ZX05005-002-008HZ) ; National Basic Research Program of China(2011CB201100-03) ; National Basic Research Program of China(2011CB201100-03) ; National Basic Research Program of China(2011CB201100-03) ; National Basic Research Program of China(2011CB201100-03) ; National Natural Science Foundation of China(41402102) ; National Natural Science Foundation of China(41402102) ; National Natural Science Foundation of China(41402102) ; National Natural Science Foundation of China(41402102) ; Fundamental Research Funds for the Central Universities(2652014001) ; Fundamental Research Funds for the Central Universities(2652014001) ; Fundamental Research Funds for the Central Universities(2652014001) ; Fundamental Research Funds for the Central Universities(2652014001) ; National Science and Technology Major Project of the Ministry of Science and Technology of China(2011ZX05005-002-008HZ) ; National Science and Technology Major Project of the Ministry of Science and Technology of China(2011ZX05005-002-008HZ) ; National Science and Technology Major Project of the Ministry of Science and Technology of China(2011ZX05005-002-008HZ) ; National Science and Technology Major Project of the Ministry of Science and Technology of China(2011ZX05005-002-008HZ) ; National Basic Research Program of China(2011CB201100-03) ; National Basic Research Program of China(2011CB201100-03) ; National Basic Research Program of China(2011CB201100-03) ; National Basic Research Program of China(2011CB201100-03) ; National Natural Science Foundation of China(41402102) ; National Natural Science Foundation of China(41402102) ; National Natural Science Foundation of China(41402102) ; National Natural Science Foundation of China(41402102) ; Fundamental Research Funds for the Central Universities(2652014001) ; Fundamental Research Funds for the Central Universities(2652014001) ; Fundamental Research Funds for the Central Universities(2652014001) ; Fundamental Research Funds for the Central Universities(2652014001) ; National Science and Technology Major Project of the Ministry of Science and Technology of China(2011ZX05005-002-008HZ) ; National Science and Technology Major Project of the Ministry of Science and Technology of China(2011ZX05005-002-008HZ) ; National Science and Technology Major Project of the Ministry of Science and Technology of China(2011ZX05005-002-008HZ) ; National Science and Technology Major Project of the Ministry of Science and Technology of China(2011ZX05005-002-008HZ) ; National Basic Research Program of China(2011CB201100-03) ; National Basic Research Program of China(2011CB201100-03) ; National Basic Research Program of China(2011CB201100-03) ; National Basic Research Program of China(2011CB201100-03) ; National Natural Science Foundation of China(41402102) ; National Natural Science Foundation of China(41402102) ; National Natural Science Foundation of China(41402102) ; National Natural Science Foundation of China(41402102) ; Fundamental Research Funds for the Central Universities(2652014001) ; Fundamental Research Funds for the Central Universities(2652014001) ; Fundamental Research Funds for the Central Universities(2652014001) ; Fundamental Research Funds for the Central Universities(2652014001) ; National Science and Technology Major Project of the Ministry of Science and Technology of China(2011ZX05005-002-008HZ) ; National Science and Technology Major Project of the Ministry of Science and Technology of China(2011ZX05005-002-008HZ) ; National Science and Technology Major Project of the Ministry of Science and Technology of China(2011ZX05005-002-008HZ) ; National Science and Technology Major Project of the Ministry of Science and Technology of China(2011ZX05005-002-008HZ) ; National Basic Research Program of China(2011CB201100-03) ; National Basic Research Program of China(2011CB201100-03) ; National Basic Research Program of China(2011CB201100-03) ; National Basic Research Program of China(2011CB201100-03)
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/85698]
专题	中国科学院地质与地球物理研究所
通讯作者	You XueLian
作者单位	1.China Univ Geosci, Sch Ocean Sci, Beijing 100083, Peoples R China 2.Chinese Acad Sci, Inst Geol & Geophys, Beijing 100029, Peoples R China 3.Max Planck Inst Marine Microbiol, D-28359 Bremen, Germany
推荐引用方式 GB/T 7714	You XueLian,Sun Shu,Zhu JingQuan. Significance of fossilized microbes from the Cambrian stromatolites in the Tarim Basin, Northwest China[J]. SCIENCE CHINA-EARTH SCIENCES,2014,57(12):2901-2913.
APA	You XueLian,Sun Shu,&Zhu JingQuan.(2014).Significance of fossilized microbes from the Cambrian stromatolites in the Tarim Basin, Northwest China.SCIENCE CHINA-EARTH SCIENCES,57(12),2901-2913.
MLA	You XueLian,et al."Significance of fossilized microbes from the Cambrian stromatolites in the Tarim Basin, Northwest China".SCIENCE CHINA-EARTH SCIENCES 57.12(2014):2901-2913.