滇西保山地区早石炭世生物地层研究  

Early Carboniferous Biostratigraphy of West Yunnan

作　　者：姜建军[1] 

机构地区：[1]地质矿产部国际合作司

出　　处：《沉积与特提斯地质》1997年第21期184-199,共16页Sedimentary Geology and Tethyan Geology

摘　　要：滇西保山地区早石炭世生物地层研究姜建军（地质矿产部国际合作司）本文研究了滇西保山早石炭世腕足动物群的分布及特征。笔者根据腕足动物纵向的分布规律，建立了三个腕足类组合，它们分别是岩关阶渔洞组Ｕｎｉｓｐｉｒｉｆｅｒｓｔｒｉａｔｏｃｏｎｖｏｌｕｔｕｓ－Ｍａ...The marine Lower Carboniferous of West Yunnan is well developed and is rich in brachiopod and coral fossils.In this paper,53 brachiopod species of 36 genera have been identified and described from this area.The present study shows that the Lower Carboniferous brachiopods there can be biostratigraphically grouped into the following three assemblages from the bottom upwards: ①Unispirifer striatoconvolotus Marginatia burlingtonensisStegacanthia sibirica sibirica assemblage(Upper Tournasian);②Delepinea subcarinata Syringothyris texta Productina margaritacea assemblage (Lower Visean);③Balakhonia yunnanensis Megachonetes zimmermanni assemblage (Upper Visean). By analysing the geological range and geographical distribution of the brachiopods,the extensive correlation of the Lower Carboniferous of West Yunnan with other 15 regions in the world has been proposed.Some biostratigraphic problems are discussed.The Lower Carboniferous of West Yunnan is divided in ascending order into Yudong formation(Upper Tournasian),Shihuadong formation (Lower Visean) and Yunruijie formation(Upper Visean).The strata of Early Tournasian and Serpukhovian(or Lower Namurian) are absent.

关 键 词：早石炭世 下石炭统 生物地层 腕足类 保山地区 大塘阶 登记号 云南保山 石花洞 腕足动物 

分 类 号：P534.45[天文地球—古生物学与地层学]