藏东八宿怒江桥—邦达一带嘉玉桥群研究的新进展  

NEW ADVANCE IN THE STUDY OF THE JIAYUQIAO GROUP IN THE NUJIANG BRIDGE BAMDA AREA,BAXOI,EASTERN TIBET

作　　者：王克勇 

机构地区：[1]贵州地勘局区调研究院

出　　处：《中国区域地质》1998年第1期105-111,共7页Regional Geology of China

摘　　要：在西藏八宿怒江桥—邦达一带嘉玉桥群中发现较丰富的化石，其中腕足类有：Ｎｅｏｓｐｉｒｉｆｅｒ，Ｓｙｒｉｎｇｏｔｈｙｒｉｓ？Ａｓｙｒｉｎｘｉａ，Ｓｐｉｒｉｆｅｒ；牙形石：Ｐａｌｍａｔｏｄｅｌａｄｅｌｉｃｕｔｕｌａ，Ｐａｌｍａｔｏｌｅｐｉｓｇｒａｃｉｌｉｓｓｉｇｍｏｉｄａｌｉｓ，Ｓｐａｔｈｏｇｎａｔｈｏｄｕｓｃｆ．Ｓｔａｂｉｌｉｓ，Ｐｏｌｙｇｎａｔｈｕｓｐｕｒｕｓ；孢子：Ｌｅｉｇａｔｏｓｐｏｒｉｔｉｓｖｕｌｇａｒｉｓ，Ｃｒａｓｉｓｐｏｒａｔｒｙｃｈｅｒａ，Ｓｕｌｃａｔｉｓｐｏｒｉｔｅｓｏｖａｔｕｓ，Ｌｉｍｉｔｉｓｐｏｒｉｔｅｓ，Ｌｅｉｏｔｒｉｌｅｔｅｓ等。据此对嘉玉桥群的划分和时代进行了重新厘定。Abundant fossils have been found in the Jiayuqiao Group in the Nujiang Bridge Bamda area,Baxoi,eastern Tibet.They include the brachiopods:Neospirifer,Syringothyris?Asyrinxia and Spirifer;conodonts:Palmatodella delicutula,palmatolepis gracilis sigmoidalis,Spathognathodus cf.stabilis and Polygnathus purus;spores:Leigatosporites,Vulgaris,Crassispora trychera,Sulcatisporites ovatus,Limitisporites and Leiotriletes.In addition,there are also lamellibranchs and gastropods. The above mentioned fossils were first discovered in the Nujiang Bridge Bamda area,Baxoi.They are of important significance for the subdivision of the Jiayuqiao Group.

关 键 词：化石 嘉玉桥群 怒江桥 腕足动物 下古生代 地层 

分 类 号：Q915.64[天文地球—古生物学与地层学]