滇西腾冲地区二叠系中统大东厂组层序地层特征  

THE STRATIGTAPHIC SEQUENCE FEATURE OF MIDDLE P DADONGCHANG FORMATION IN TENGCHONG AREA,W YUNNAN

作　　者：姚金昌 张蓉 李蓬博 YAO Jin-chang;ZHANG Yong;LI Peng-bo(Yunnan Professional Institute of Land Resources,Kunming 650217;Yunnan General Company(Group),Kunming650011;Yunnan Exploration Institute of Geology & Mineral Resources,Kunming650051)

机构地区：[1]云南国土资源职业学院,云南昆明650217 [2]云南地矿总公司(集团),云南昆明650011 [3]云南省地质矿产勘查院,云南昆明650051

出　　处：《云南地质》2019年第3期265-272,共8页Yunnan Geology

摘　　要：通过对云南腾冲、梁河地区二叠系中统大东厂组(P2dd)岩石地层的调查研究,初步将其划分为3个地层间隔、7种类型基本层序,并于大东厂组一段与二段之间,发现存在Ⅱ型不整合界面(SB2)。大东厂组基本层序的划分,与其岩石地球化学特征及生物地层划分基本吻合。According to the study on Middle P Dadongchang Formation(P 2 dd)lithologic stratigraphy in Tengchong,Lianghe area,Yunnan,we have preliminarily divided them into 3 stratigraphic intervals,7 basic sequences and discovered the type 2 unconformity interface(SB 2)between Member 1 and 2 of Dadongchang Formation.The division of Dadongchang Formation basic sequence consists with those of petrologic geochemical feature and biostratigraphic division.

关 键 词：大东厂组 基本层序 层序地层 云南腾冲-梁河 

分 类 号：P539.2[天文地球—古生物学与地层学]