川西高原海相侏罗系研究进展

Advances in the Research into Marine Jurassic in the West Sichuan Plateau

前人报导川西木里县桃坝乡、搏科乡凯司梁子及新龙县披差乡之西的呷拉西等地,在区调中获得多门类的古生物化石,确认为川西高原海相侏罗系的新发现,并创命为端环山组。但持不同意见的人认为这套地层在甘孜-理塘缝合带内,以往的文献均以碳酸盐岩块砾混杂层归属于晚三叠世地层曲嘎寺组之中。本文对该地层研究进展以及存在问题加以综合性的论述。

It is reported that many marine fossils have been discovered in the strata in Taoba Township and Boke Township,Muli County and in Galaxi,Xinlong County.The strata are considered to belong to Jurassic System and named after the Duanhuanshan Formation.However,some other geologists believe that the strata are exposed in the Garzê-Litang suture zone and consist of carbonate mélange which should belong to the Triassic Qugasi Formation.This paper deals with advances in the research into the strata and existing problems.