川东北地区下三叠统嘉陵江组嘉二2亚段沉积相研究  

Study on Sedimentary Facies of J22 Subsection of Jialingjiang Formation of Lower Triassic in Northeastern Sichuan Basin

作　　者：周睿 代宗仰[1] 

机构地区：[1]西南石油大学地球科学与技术学院,四川 成都

出　　处：《地球科学前沿（汉斯）》2023年第9期1015-1022,共8页Advances in Geosciences

摘　　要：通过对研究区钻测井、岩心、薄片以及野外剖面等资料进行研究,并结合前人研究成果认为,川东北地区嘉二2亚段发育局限台地~蒸发台地沉积环境,可进一步划分为局限潮坪、台内浅滩、蒸发潮坪亚相及灰坪、云坪、膏坪、灰云坪、膏云坪等微相。从下至上,嘉二段共经历三个水体由深变浅的旋回。Based on the study of drilling, logging, core, thin section and field profile data in the study area, combined with previous research results, it is believed that the sedimentary environment of the restricted platform-evaporation platform is developed in the T1j22 of the northeastern Sichuan Basin, which can be further divided into restricted tidal flat, intra-platform shoal, evaporation tidal flat subfacies and ash flat, cloud flat, gypsum flat, ash cloud flat, gypsum cloud flat and other microfacies. From bottom to top, the second member of Jialingjiang experienced three cycles of water body from deep to shallow.

关 键 词：川东北 嘉陵江组 碳酸盐台地 沉积相 

分 类 号：P61[天文地球—矿床学]