松辽盆地钱家店砂岩型铀矿成矿地质特征  

Metallogenic characteristics of Qianjiadian sandstone uranium deposit in Songliao basin

作　　者：罗毅[1,2] 何中波[1,2] 马汉峰[1,2] 孙祥[1,2] 

机构地区：[1]核工业北京地质研究院,北京100029 [2]铀资源勘查与评价技术重点实验室,北京100029

出　　处：《矿床地质》2012年第2期391-400,共10页Mineral Deposits

摘　　要：通过对钱家店铀矿床产出的地质背景、地质构造环境、矿床铀矿物特征、蚀变地球化学特征、微量元素地球化学特征、成矿物质来源及成矿年代学等综合研究,认为钱家店铀矿床受"晚白垩世姚家期辫状河道洼地、晚白垩世嫩江期末反转隆升剥蚀构造天窗、NNE向贯通性基底断裂"三位一体控制,矿床成因类型为同生沉积后生叠加复成因型。这为进一步的找矿工作提供了依据。The main purpose of this study is metallogenic prognosis in Songliao basin on the basis of the study of geological conditions and genetic model of the ore deposit.According to comprehensive researches on characteristics of the Qianjiadian sandstone uranium deposit,such as geological background,geological metallogenic conditions,uranium minerals,alteration geochemistry,minor element geochemistry,source of minerals and ore-forming stages,the authors hold that the Qianjiadian uranium deposit is controlled by late Cretaceous Yaojia stage braided channel depression,the last phase of late Cretaceous Nenjiang stage reverse uplifted and denudated windows,and NNE-trending transgressive fractures.And this model is called ＂three ore-forming stages in one place＂.The ore deposit is of syngenetic sedimentation and epigenetic superimposition polygenetic and compound type.

关 键 词：地质学 复成因矿床 辫状河道洼地 构造天窗 贯通性基底断裂 

分 类 号：P619.14[天文地球—矿床学]