摘要
一、前言 1964年,我们在江西西南部的崇义县过埠公社牛皮湾—牛皮垄测制了下奥陶统剖面(图1)。系统地采集了化石(图版Ⅰ)。该地的下奥陶统可分为印渚埠组和宁国组。宁国组中笔石丰富,可划分为九个带(其中包括Tetragraptus fruticosus带和Oncograptus带)。
The present paper deals with a de,tailed section of Lower Ordovician graptolite rocks of Chongyi,Jiangxi.The succession of the graptolite zones is as follows:M.Ordovician Glyptograptus teretiusculus zone Conformity L.Ordovician Ninggu9 formation Pterograptus elegans zone Amplexograptus confertus zone Nicholsondgraptus fasciculatus subzone Didymograptus ellesae subzone Glyptograptus austrodentatus zone Cardiograptus amplus zone Oncograptus zone Didymograptus abnormis zone Didymograptus"protobifidus"zone Tetragraptus fruticosus zone Tetragraptus(Etagr.)approximatus zone Conformity Yinzhufu formation Beds with Anisograptus-Clonograptus The Ningguo formation is 385 metres thick’and is essentially composed of slate.The Lower Ordovician graptolite zones,of Chongyi(southwest Jiangxi)and western Zhejiang may be thus correlated with equivalent zones of Britain,Australia and North America,as shown in Table 3.
作者
肖承协
薛春汀
黄学涔
Xiao Chengxie;Xue Chunting;Huang Xuecen
出处
《地质学报》
1975年第2期112-125,204,共15页
Acta Geologica Sinica
