干旱区生态环境知识资源中心(Arid): Economic phosphorite from the Ediacaran Doushantuo Formation, South China, and the Neoproterozoic-Cambrian Phosphogenic Event

Arid

DOI	10.1016/j.sedgeo.2019.05.004
	Economic phosphorite from the Ediacaran Doushantuo Formation, South China, and the Neoproterozoic-Cambrian Phosphogenic Event
	Zhang, Yaguan 1,2,3; Pufahl, Peir K.4; Du, Yuansheng 1,2,3; Chen, Guoyong 5; Liu, Jianzhong 3,5; Chen, Qinggang 5; Wang, Zepeng 3,5; Yu, Wenchao 1,2,3
通讯作者	Du, Yuansheng
来源期刊	SEDIMENTARY GEOLOGY
ISSN	0037-0738
EISSN	1879-0968
出版年	2019
卷号	388 页码:1-19
英文摘要	Phosphorite of the Ediacaran Doushantuo Formation accumulated in the central Guizhou province during the Neoproterozoic-Cambrian Phosphogenic Event, producing the first true phosphorite giant in Earth history. Deposition is interpreted to have occurred on a wave-dominated epeiric platform along the northern margin of the Qianzhong Uplift. Lithofacies stacking patterns and two paleokarst surfaces record phosphogenesis through at least two sea-level cycles. As in younger Phanerozoic epeiric sea phosphorites, the delivery of upwelled phosphorus is interpreted to have stimulated phosphogenesis in a range of shallow-water environments. Ten phosphatic and associated lithofacies are recognized in the Doushantuo Formation. Wavy and horizontal laminated pristine facies were the locus of phosphogenesis and reflect the authigenic precipitation of francolite in accumulating fine sediment. Granular, cross-stratified phosphorite is interpreted to have been produced through storm-wave winnowing of pristine facies and the subsequent transport, redeposition, and concentration of phosphatic peloids into economic beds. Beds with the highest concentration of phosphorus formed in shallow, wave-agitated environments around paleo-topographic highs. Paragenetic analysis suggests that secondary meteoric processes further enriched the phosphorus content (>35 wt%) of these granular beds during sea-level lowstands. Such aerially extensive, upwelling-related phosphorite contrasts Paleoproterozoic and Neoproterozoic phosphatic deposits. Throughout much the Proterozoic francolite precipitation was restricted to shallow-water, photosynthetic oxygen oases where redox sensitive phosphogenic processes were focused in the sediment. The Doushantuo Formation is interpreted to record the oxygenation of the water column and concomitant expansion of phosphogenic environments during the Neoproterozoic Oxygenation Event. This progressive ventilation of the deep ocean forever changed the biogeochemical cycling of phosphorus in the marine realm and set the stage for the deposition of phosphorite giants that punctuate the Phanerozoic stratigraphic record. (C) 2019 Elsevier B.V. All rights reserved.
英文关键词	Doushantuo Formation Neoproterozoic phosphogenic event Economic phosphorite Hydrodynamic reworking Secondary ore enrichment Neoproterozoic Oxygenation Event
类型	Article
语种	英语
国家	Peoples R China ; Canada
收录类别	SCI-E
WOS记录号	WOS:000474681600001
WOS关键词	PROTEROZOIC CYANOBACTERIAL BLOOMS ; OCEAN OXYGENATION ; COLLAPSE BRECCIAS ; SULFUR BACTERIA ; YANGTZE BLOCK ; WENGAN BIOTA ; PB AGES ; PHOSPHATE ; SEDIMENTARY ; CONSTRAINTS
WOS类目	Geology
WOS研究方向	Geology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/218819
作者单位	1.China Univ Geosci, State Key Lab Biogeol & Environm Geol, Wuhan 430074, Hubei, Peoples R China; 2.China Univ Geosci, Sch Earth Sci, Wuhan 430074, Hubei, Peoples R China; 3.Minist Nat Resources Peoples Republ China, Innovat Ctr Ore Resources Explorat Technol Reg Be, Guiyang 550000, Guizhou, Peoples R China; 4.Acadia Univ, Dept Earth & Environm Sci, 12 Univ Ave, Wolfville, NS B4P 2R6, Canada; 5.Guizhou Bur Geol & Mineral Explorat & Dev, Guiyang 550000, Guizhou, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Yaguan,Pufahl, Peir K.,Du, Yuansheng,et al. Economic phosphorite from the Ediacaran Doushantuo Formation, South China, and the Neoproterozoic-Cambrian Phosphogenic Event[J],2019,388:1-19.
APA	Zhang, Yaguan.,Pufahl, Peir K..,Du, Yuansheng.,Chen, Guoyong.,Liu, Jianzhong.,...&Yu, Wenchao.(2019).Economic phosphorite from the Ediacaran Doushantuo Formation, South China, and the Neoproterozoic-Cambrian Phosphogenic Event.SEDIMENTARY GEOLOGY,388,1-19.
MLA	Zhang, Yaguan,et al."Economic phosphorite from the Ediacaran Doushantuo Formation, South China, and the Neoproterozoic-Cambrian Phosphogenic Event".SEDIMENTARY GEOLOGY 388(2019):1-19.