Biogenic Iron-Rich Filaments in the Quartz Veins in the Uppermost Ediacaran Qigebulake Formation, Aksu Area, Northwestern Tarim Basin, China: Implications for Iron Oxidizers in Subseafloor Hydrothermal Systems

doi:10.1089/ast.2014.1234

CORC > 地质与地球物理研究所 > 中国科学院地质与地球物理研究所 > 中国科学院油气资源研究重点实验室

	Biogenic Iron-Rich Filaments in the Quartz Veins in the Uppermost Ediacaran Qigebulake Formation, Aksu Area, Northwestern Tarim Basin, China: Implications for Iron Oxidizers in Subseafloor Hydrothermal Systems
	Zhou, Xiqiang 1,2; Chen, Daizhao 1; Tang, Dongjie 3; Dong, Shaofeng 1; Guo, Chuan 1,2; Guo, Zenghui 1,2; Zhang, Yanqiu 1
刊名	ASTROBIOLOGY
	2015-07-01
卷号	15 期号:7 页码:523-537
关键词	Filamentous microfossils Fe-oxidizing bacteria Uppermost Ediacaran Quartz vein Submarine hydrothermal feeder system The earliest Cambrian
DOI	10.1089/ast.2014.1234
文献子类	Review
英文摘要	Fe-(oxyhydr)oxide-encrusted filamentous microstructures produced by microorganisms have been widely reported in various modern and ancient extreme environments; however, the iron-dependent microorganisms preserved in hydrothermal quartz veins have not been explored in detail because of limited materials available. In this study, abundant well-preserved filamentous microstructures were observed in the hydrothermal quartz veins of the uppermost dolostones of the terminal-Ediacaran Qigebulake Formation in the Aksu area, northwestern Tarim Basin, China. These filamentous microstructures were permineralized by goethite and hematite as revealed by Raman spectroscopy and completely entombed in chalcedony and quartz cements. Microscopically, they are characterized by biogenic filamentous morphologies (commonly 20-200m in length and 1-5m in diameter) and structures (curved, tubular sheath-like, segmented, and mat-like filaments), similar to the Fe-oxidizing bacteria (FeOB) living in modern and ancient hydrothermal vent fields. A previous study revealed that quartz-barite vein swarms were subseafloor channels of low-temperature, silica-rich, diffusive hydrothermal vents in the earliest Cambrian, which contributed silica to the deposition of the overlying bedded chert of the Yurtus Formation. In this context, this study suggests that the putative filamentous FeOB preserved in the quartz veins might have thrived in the low-temperature, silica- and Fe(II)-rich hydrothermal vent channels in subseafloor mixing zones and were rapidly fossilized by subsequent higher-temperature, silica-rich hydrothermal fluids in response to waning and waxing fluctuations of diffuse hydrothermal venting. In view of the occurrence in a relatively stable passive continental margin shelf environment in Tarim Block, the silica-rich submarine hydrothermal vent system may represent a new and important geological niche favorable for FeOB colonization, which is different from their traditional habitats reported in hydrothermal vent systems at oceanic spreading centers or volcanic seamounts. Thus, these newly recognized microfossils offer a new clue to explore the biological signatures and habitat diversity of microorganisms on Earth and beyond.
WOS关键词	DE-FUCA RIDGE ; NORTHEAST PACIFIC-OCEAN ; SI OXYHYDROXIDE DEPOSITS ; PAPUA-NEW-GUINEA ; RAMAN-SPECTROSCOPY ; CIRCUMNEUTRAL PH ; OXIDE DEPOSITS ; AXIAL-VOLCANO ; MORPHOLOGICAL BIOSIGNATURES ; EXTREME ENVIRONMENTS
WOS研究方向	Astronomy & Astrophysics ; Life Sciences & Biomedicine - Other Topics ; Geology
语种	英语
WOS记录号	WOS:000363933700002
资助机构	National Science and Technology Special Project of China(2011ZX0500803) ; National Science and Technology Special Project of China(2011ZX0500803) ; National Basic Research Program Project (973 Project)(2012CB214802) ; National Basic Research Program Project (973 Project)(2012CB214802) ; National Natural Science Foundation of China(40839907 ; National Natural Science Foundation of China(40839907 ; 41203030 ; 41203030 ; 41472089) ; 41472089) ; National Science and Technology Special Project of China(2011ZX0500803) ; National Science and Technology Special Project of China(2011ZX0500803) ; National Basic Research Program Project (973 Project)(2012CB214802) ; National Basic Research Program Project (973 Project)(2012CB214802) ; National Natural Science Foundation of China(40839907 ; National Natural Science Foundation of China(40839907 ; 41203030 ; 41203030 ; 41472089) ; 41472089)
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/62204]
专题	地质与地球物理研究所_中国科学院油气资源研究重点实验室
作者单位	1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Petr Resources Res, Beijing, Peoples R China 2.Univ Chinese Acad Sci, Beijing, Peoples R China 3.China Univ Geosci, Sch Geosci & Resources, Beijing, Peoples R China
推荐引用方式 GB/T 7714	Zhou, Xiqiang,Chen, Daizhao,Tang, Dongjie,et al. Biogenic Iron-Rich Filaments in the Quartz Veins in the Uppermost Ediacaran Qigebulake Formation, Aksu Area, Northwestern Tarim Basin, China: Implications for Iron Oxidizers in Subseafloor Hydrothermal Systems[J]. ASTROBIOLOGY,2015,15(7):523-537.
APA	Zhou, Xiqiang.,Chen, Daizhao.,Tang, Dongjie.,Dong, Shaofeng.,Guo, Chuan.,...&Zhang, Yanqiu.(2015).Biogenic Iron-Rich Filaments in the Quartz Veins in the Uppermost Ediacaran Qigebulake Formation, Aksu Area, Northwestern Tarim Basin, China: Implications for Iron Oxidizers in Subseafloor Hydrothermal Systems.ASTROBIOLOGY,15(7),523-537.
MLA	Zhou, Xiqiang,et al."Biogenic Iron-Rich Filaments in the Quartz Veins in the Uppermost Ediacaran Qigebulake Formation, Aksu Area, Northwestern Tarim Basin, China: Implications for Iron Oxidizers in Subseafloor Hydrothermal Systems".ASTROBIOLOGY 15.7(2015):523-537.