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.
出处
《吉林大学学报（地球科学版）》
EI
CAS
CSCD
北大核心
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)
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
Jingushan area, Yanbian
Kedao rock Formation
parental rocks of metamorphic rocks
cycle of volcanic eruption-sedimentation
sedimentation-tectonic setting
