干旱区生态环境知识资源中心(Arid): Genesis of sandstone-type uranium deposits along the northern margin of the Ordos Basin, China

Arid

DOI	10.1016/j.gsf.2019.07.005
	Genesis of sandstone-type uranium deposits along the northern margin of the Ordos Basin, China
	Jin, Ruoshi 1,2; Teng, Xueming 1,2; Li, Xiaoguang 1,2; Si, Qinghong 1,2; Wang, Wei 1,2
通讯作者	Jin, Ruoshi
来源期刊	GEOSCIENCE FRONTIERS
ISSN	1674-9871
出版年	2020
卷号	11 期号:1 页码:215-227
英文摘要	Sandstone-type U mineral resources are among the important sources for nuclear energy. The U deposits in the Ordos Basin in China form part of the northern segment of the sandstone-hosted Central Asian Uranium Mega-Province. Two types of mineralizations are recognized in this basin: phreatic permeable type and interlayer permeable type, both exhibiting features equivalent to roll-front subtypes. The interlayer permeable type is widely accepted as the dominant mineralization type for sandstone-type uranium deposits within large-scale basins, also designated as the interlayer oxidation zone type, based on the horizontal color zoning model representing changing redox conditions. Here we synthesize data from several drill holes within the Ordos Basin, which suggest that major Mesozoic tectonic movements controlled the evolution of the sedimentary system in the basin. These tectonic movements contributed to the formation of three angular unconformities and four parallel unconformities as inferred from the stratigraphic relationships. In addition, other features such as vertical color zoning, paleo-channel controlled tabular or lentoid ore bodies (without roll-type) and a group interlayer horizontal zoning of altered minerals are also documented. Sequence stratigraphic analysis indicates that the Ordos Basin generally witnessed four cycles of water level variations during Mesozoic. During the variations, three high water level and three low water level events were recorded. Biological characteristics imply that the Ordos Basin went through multiple arid to humid climatic evolutions during Mesozoic. Combining the newly documented features with some novel concepts on the hydrodynamic mechanism for supergene ore-forming fluids, we propose a metallogenic model which invokes the importance of tectonic movements and water level fluctuations to explain the genesis of uranium deposits along the northern margin of the Ordos Basin.
英文关键词	Sequence stratigraphic analysis Hydrodynamic mechanisms Metallogenic model Tectonic history Ordos Basin
类型	Article
语种	英语
国家	Peoples R China
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:000503182200013
WOS关键词	VELOCITY STRUCTURE ; ERLIAN BASIN ; MINERALIZATION ; BLOCK ; CONSTRAINTS ; SYSTEMS ; BENEATH ; MODEL
WOS类目	Geosciences, Multidisciplinary
WOS研究方向	Geology
EI主题词	2020-01-01
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/312019
作者单位	1.China Geol Survey, Tianjin Ctr, Tianjin 300170, Peoples R China; 2.China Geol Survey, Key Lab Uranium Geol, Tianjin 300170, Peoples R China
推荐引用方式 GB/T 7714	Jin, Ruoshi,Teng, Xueming,Li, Xiaoguang,et al. Genesis of sandstone-type uranium deposits along the northern margin of the Ordos Basin, China[J],2020,11(1):215-227.
APA	Jin, Ruoshi,Teng, Xueming,Li, Xiaoguang,Si, Qinghong,&Wang, Wei.(2020).Genesis of sandstone-type uranium deposits along the northern margin of the Ordos Basin, China.GEOSCIENCE FRONTIERS,11(1),215-227.
MLA	Jin, Ruoshi,et al."Genesis of sandstone-type uranium deposits along the northern margin of the Ordos Basin, China".GEOSCIENCE FRONTIERS 11.1(2020):215-227.