吉南集安群层序的新认识  

NEW UND ERSTANDING TOS TRATIGRAPHIC SEQUENCEOFTHEJIAN GROUP,JIENAN

作　　者：武殿英 

机构地区：[1]有色总公司吉林地勘局地质处

出　　处：《矿产与地质》1995年第2期112-119,共8页Mineral Resources and Geology

摘　　要：作者认为，集安群的层序自下而上应是新开河组，清河组，大东岔组，新开河组原岩为碱质酸－基杜双峰式火山岩和镁质碳酸盐岩建造，清河组原岩为火山岩和碳酸盐岩建造。大东岔组原岩为碎屑岩－粘土岩建造，浊流沉积十分典型。集安群主体呈狭长带状分布，厚度巨大，同沉积断裂活动明显，滑移褶皱和滑塌角砾岩分布普遍，柔性变形与浊积岩共生，显示了一个裂谷盆地的基本特征。It is considered tliat the stratigraphic seqtience of the Jian group should be the Xingkaihe group, Qinghe group and Dadongcha group from bottom to top.The original rocks of the xingkaihe group were alkali acid-basic bimodal formationsof volcanic rock and magnesian carbonatite. Those of the Qirighe group are volcanic rock and carbnatite formation.Those of the Dadongcha grotip are clastic and clay rock fornmation with very typicaI turbidity sedimen-tation.Majoraty of the Jian group occurs as a long and narrow zone with a giant thickness,ohiotis synsedimeiitary fauIting,common slump fold and olistolith,soft deformation associ-ated with turbidite,which suggest some basic characters of a rift basin.

关 键 词：集安群 建造 裂谷 吉林 地层层序 

分 类 号：P53[天文地球—古生物学与地层学]