|Table of Contents|

Relationship Between Late Reformation and Formation of Sandstone-type UraniumOre in Ordos Basin(PDF)

《地球科学与环境学报》[ISSN:1672-6561/CN:61-1423/P]

Issue:
2006年第03期
Page:
19-23
Research Field:
Publishing date:

Info

Title:
Relationship Between Late Reformation and Formation of Sandstone-type UraniumOre in Ordos Basin
Author(s):
LI Wei-hongXU Gao-zhong
No.203 Research Institute in Nuclear Industry, Xianyang 712000, Shaanxi, China
Keywords:
late reformation sandstone-type uranium deposit origine Ordos basin
PACS:
P618.130.1;TE121.1;P54
DOI:
-
Abstract:
The stages, types, distribution features of late reformation in Ordos Basin are researched based on con- tact relation, sedimentary formation, tectonic deformation, main tectonic events and isotopic ages. The reforma- tion of the basin occurred in the late Jurassic and later epoches, and can be divided into 5 phase, they are late Ju- rassic, early Cretaceous, early Cretaceous end time-Paleocene epoch, Eocene epoch-Miocene epoch and Miocene epoch–present phases. The reformation types are uplifting and weathering, thrust fold, fault depression, deep burial with superimposition, and thermodynamic reforming, and their spacial distributions are uniformity. Rela- tionship between the late reformation and Sandstone-type uranium deposits are analyzed. This paper put forward that multi-stage uplifting and weathering since late Jurassic Epoch controlled the formation of Sandston-type Ura- nium deposits; uplifting tilting area controlled the spacial distribution of Sandstone-type Uranium deposits; but thrust fold, fault depression, deep burial with superimposition is unfavorable to metallogenetic of sandstone-type uramium deposits, because they change the form, depth of ore-bearing layers and local groundwater discharge.

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Last Update: 2006-09-20