新疆东昆仑且地塔格西地区志留系白干湖组初步研究  

Primarily research of the Baiganhu Formation of Silurian in Qieditage western area of east Kunlun mountains,Xinjiang

作　　者：岳跃破 张军进 张天池 YUE Yue-po;ZHANG Jun-jin;ZHANG Tian-chi(No.3 Exploration Institute of Geology and Mineral Resources,Yantai 264000,Shandong,China;Sichuan Bureau of Nuclear Geology,Chengdu 610052,Sichuan,China)

机构地区：[1]山东省第三地质矿产勘查院,山东烟台264000 [2]四川省核工业地质调查院,四川成都610052

出　　处：《吉林地质》2020年第2期33-38,共6页Jilin Geology

基　　金：2016年中央返还两权价款资金项目“新疆东昆仑且地塔格西一带1∶5万四幅区域地质矿产调查”(K16-1-LQ17)。

摘　　要：对新疆东昆仑且地塔格西地区志留系白干湖组实测地质剖面进行了描述和分析,记录了该组地层岩石组合特征及沉积学特征,确定了研究区白干湖组为一套低绿片岩相的复理石弧后盆地沉积碎屑岩,代表被动陆缘大陆斜坡-深海平原的沉积物。通过碎屑岩浆锆石U-Pb同位素测年,获得(429.6±3.7) Ma年龄值,结合区域取得的化石资料,将白干湖组时代定为早志留世。The Baiganhu Formation of Silurian in Qieditage western area of east Kunlun mountains of Xinjiang is described and analyzed,and rock association characteristics and sedimentary characteristics of the strata are recorded,determined the Baiganhu Formation in the study area is flysch back arc basin sedimentary environment with a set of low greenschist facies,which represents the sediments of the passive margin slope-the abyssal plain. Through detrital zircon U-Pb dating,acquired the age of429. 6 ± 3. 7 Ma,combining the fossil data obtained from the region,the age of Baiganhu Formation settled the Lower Silurian.

关 键 词：东昆仑 志留系 白干湖组 复理石建造 

分 类 号：P534.43[天文地球—古生物学与地层学]