延边金谷山地区早二叠世“柯岛岩组”火山喷发沉积构造划分及构造环境  

Classification and tectonic settings of the volcanic-sedimentary structures of the Early Permian Kedao rock Formation in the Jingushan area,Yanbian

作　　者：王建新[1] 常建平[1] 赵志[2] 解成波[2] 

机构地区：[1]吉林大学地球科学学院,吉林长春130061 [2]吉林省地勘局,吉林长春130061

出　　处：《吉林大学学报（地球科学版）》2004年第3期333-337,共5页Journal of Jilin University：Earth Science Edition

基　　金：中国地质调查局矿产资源调查补偿基金资助(2001.12)

摘　　要：延边金谷山地区二叠纪"柯岛岩组"为一套低绿片岩相变质岩系,其原岩为一套酸性-中酸性火山碎屑沉积岩系。通过剖面详细测量和岩石学研究,建立了该地区"柯岛岩组"层序,划分了6个火山喷发沉积旋回,并依据各旋回序列岩相组合特征,恢复了该地区在陆表海裂陷(槽)构造条件水下火山喷发沉积作用及演化环境。The Permian Kedao Formation in the Jingushan area,Yanbian belongs to a succession of metamorphic rocks of low greenschist facies. Their parental rocks consist of a set of acid-intermediate-acid pyroclastics. Based on detailed profile measurement and petrological studies, the sequence of the Kedao rock Formation in the area has been set up and six volcanic eruption-sedimentation cycles are divided. Based on the lithofacies and their association of each cycle, a tectonic setting in which marine volcanic eruption and sedimentation in an inland rift is reconstructed.

关 键 词：延边金谷山地区 柯岛岩组 变质原岩 火山喷发一沉积旋回 沉积构造环境 

分 类 号：P535.231[天文地球—古生物学与地层学] P534.46[天文地球—地质学]