Sedimentary Facies Feature of Early-Middle Jurassic and Implication for Uranium Mineralization in the North Monocline of Western Kuche Depression
XU Qiang ， QIN Mingkuan ， HUANG Shaohua ， YANG Ye ， LI Juan ， LIU Zhangyue ，#br# HE Zhongbo ， GUO Qiang ， SONG Jiye
Beijing Research Institute of Uranium Geology ， CNNC Key Laboratory of Uranium Resources Exploration and Evaluation Technology ， Beijing 100029 ， China
Abstract： The North monocline in the west of Kuche depression is a southern dripping slope which
deposited alluvial-lacustrine lithosomic bodies of Early Jurassic Taliqike ， Ahe ， Yangxia formations and
greycoal-bearing series of Middle Jurassic Kezilenuer Formation ， which are favorable for sandstone type
uranium mineralization. Braided stream ， raided stream delta ， meandering stream delta ， swamp and
lacustrine were identified by measured section and drillanalysis. Braided stream delta and meandering stream
delta are favorable for sandstone type uranium mineralization because of well developed sandbodies ，
sustained water division layer and composition of mudstone-sandstone-mudstone. Braided stream sediments
is not favorable for sandstone type uranium mineralization because of poor in confining bed and composition
of mudstone-sandstone-mudstone. Swamp and lacustrine sediments are not favorable for sandstone type
uranium mineralization because of less sandbodies.
2019, Vol. 35 
