庙高寺—二里场嘉陵江组层序地层研究  

Study on Stratigraphic Sequence of Jialingjiang Formation of Lower Triassic in Miaogaosi-Erlichang

作　　者：李文茂[1] 李国蓉[1] 张天操[1] 金小燕[2] 

机构地区：[1]"油气藏地质及开发工程"国家重点实验室.成都理工大学,四川成都610059 [2]中国石油西南油气田公司蜀南气矿,四川泸州646000

出　　处：《天然气技术》2009年第6期12-14,77,共3页NATURAL GAS TECHNOLOGY

摘　　要：依据层序地层学原理并结合研究区实际情况,识别出了嘉陵江组层序关键界面。以岩性、测井资料、地层叠置结构关系、沉积相序变化为依据,将庙高寺—二里场地区划为2个三级层序、6个四级层序和15个五级层序。以此为基础建立起层序地层格架,并阐明了层序格架的横向与纵向发育特征,即:层序横向上发育稳定,TST时期形成开阔台地相,HST时期形成局限台地相;纵向上2个三级层序的海侵和高位体系域厚度有所差异。The main sequence boundary of Jialingjiang Formation can be identified by sequence stratigraphy. In this study, two III sequences, six IV sequences and fifteen VII sequences may be classified for Miaogaosi-Erlichang area according to some lithological and well-logging data as well as strata overlapping structure and sedimentary-facies sequence variation. So, a stratigraphic framework has been established, and its horizontal or longitudinal development are also illustrated, showing that(1)sequences are developed very stable in lateral and the open platform facies were formed during TST whereas the restricted platform facies were formed during HST; and (2) longitudinally, there is a difference existing in thickness of both transgression and highstand system tracts for the two III sequences.

关 键 词：庙高寺-二里场 嘉陵江组 层序划分 层序格架 

分 类 号：P618.13[天文地球—矿床学]