沿河土地坳中奥陶统牙形石生物地层  

Middle Ordovician Conodont Biostratigraphy In Tudi'ao,Yanhe County, Guizhou Province

作　　者：陈笑媛[1] 

机构地区：[1]贵州工学院地质系

出　　处：《贵州地质》1994年第3期218-223,共6页Guizhou Geology

摘　　要：本文论述了贵州沿河土地坳中奥陶统牙形石生物地层，该地中奥陶统（十字铺组和宝塔组）地层发育，岩性以碳酸盐类为主，牙形石较丰富，其牙形石组合面貌与扬子地区基本一致，系属北大西洋生物地理区。In this paper, The author discusses middle Ordovician conodont biostratigraphy in Tudiao, Yuanhe county, Guizhou province, In the region, middle Ordovician (Shizhipu formation and Baota formation) strata were well, And the conodont was plentiful. Basing on the conodont assemblage in Tudiao, they were similar to those in other regions of the South China and belonged to the North Atlantic.

关 键 词：中奥陶统 牙形石 生物地层 沿河土地坳 

分 类 号：Q915.642[天文地球—古生物学与地层学]