摘要
综合应用沉积学、测井地质学及地层学等理论及方法,分析了平庄盆地黑水地区晚白垩世孙家湾组上段的沉积体系特征以及有利的铀矿化部位.结果表明,黑水地区在孙家湾组上段沉积期并不是处于平庄盆地的沉积中心,而是处于盆地的沉积边缘地区;黑水地区在孙家湾组上段沉积期主要发育陆相冲积扇相沉积,沉积基准面经历早期上升,中期到达顶点,晚期下降的一个演化过程,冲积扇的辫状河道沉积为铀矿化主要富集部位.
Based on former research findings,sedimentary system characteristics and potential uranium mineralization sections of the upper Sunjiawan formation of the late cretaceous located near Heishui were analyzed using principles of sedimentology,well logging geology,and stratigraphy.Results indicated that the Heishui area is in the formative stage of the upper Sunjiawan formation and is not located at the center of the Pingzhuang basin but lies on the edge of the basin.The sedimentary base level experienced a cycle in which elevation occurred during the early stage,a high point was reached in mid stage,and a drop off during the late stage.During this period,alluvial braided channel deposits were favorable to uranium mineralization.
出处
《东北大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2011年第4期583-586,共4页
Journal of Northeastern University(Natural Science)
基金
辽宁省自然科学基金资助项目(20082040)
关键词
沉积体系
铀矿化
孙家湾组
平庄盆地
黑水地区
sedimentary system
uranium mineralization
Sunjiawan formation
Pingzhuang basin
Heishui area
