羌塘雁石坪中侏罗统雀莫错组地层及沉积环境  

Stratigraphy and sedimentary environments of the Qoimaco Formation in the Yanshiping region, Qiangtang

作　　者：王建坡[1] 赵兵[1] 

机构地区：[1]成都理工大学,四川成都610059

出　　处：《沉积与特提斯地质》2004年第3期43-47,共5页Sedimentary Geology and Tethyan Geology

基　　金：中国地质调查局"1:25万<乌兰乌拉湖幅>区域地质调查"。

摘　　要：本文详细描述了雁石坪附近一段地层剖面,并根据地层的岩石组合特征将其归入雀莫错组;依据古生物化石特征,将其时代划为侏罗纪早巴通期。沉积环境分析表明,雁石坪剖面为一套海侵的半咸水潮坪相沉积。The present paper deals, in details, with a stratigraphic section (formerly Matuo Formation) in the Yanshiping region, Qiangtang, which may be assigned to the Qoimaco Formation in the light of rock (associations), and to the early Bathonian (Middle Jurassic) according to organic fossils in the strata. The sedimentary facies analysis shows that the strata within the section belong to the delta and tidal-flat deposits. The palaeontological and palaeoecological data indicate that these strata were deposited in a brackish environment, with the sea water deepening upwards.

关 键 词：羌塘盆地 雁石坪 雀莫错组 中侏罗统 

分 类 号：P534.52[天文地球—古生物学与地层学]