| 广西恭城奥陶纪含笔石地层 |
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| 引用本文： | 唐兰,韩乃仁,张元动.广西恭城奥陶纪含笔石地层[J].地层学杂志,2004,28(2):158-167,191. |
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| 作者姓名： | 唐兰 韩乃仁 张元动 |
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| 作者单位： | 中国地质大学地球科学与资源环境学院,北京,100083;广西大学资源与环境学院,广西,南宁,530004;桂林工学院,广西,桂林,541004;中国科学院南京地质古生物研究所,江苏,南京,210008 |
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| 基金项目： | 广西青年科学基金,项目编号9811714 |
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| 摘 要： | 桂北恭城奥陶纪含笔石地层过去因缺乏生物化石证据将其划归于寒武系清溪组。1997年在其中发现笔石后重新将时代确定为奥陶纪,整套地层可划分为8个笔石带.自上而下为:8.Nemagraptus gracilis带;7.Ptero-graptus elegans带;6.Nicholsonograptus fasciculatus带;5.Acrograptus ellesae带;4.Undulograptus austroden-tatus带;3.Exigraptus clavus带;2.Isograptus caduceus cf.imitatus带;1.Didymograptus(Expansograptus)abnormis带。该地层与我国广东、浙江、江西、安徽等地区,以及澳大利亚、北美、英国等的相应层位可以对比。
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| 关 键 词： | 奥陶系 笔石 地层划分 恭城 广西 |
| 文章编号： | 0253-4959(2004)02-0158-10 |
ORDOVICIAN GRAPTOLITE BIOSTRATIGRAPHY OF GONGCHENG,GUANGXI,CHINA |
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| TANG Lan,HAN Nai-ren,ZHANG Yuan-dong China University of Geosciences,Beijing, College of Resource and Environment,Guangxi University,Nanning, Guilin Institute of Technology,Guilin, Nanjing Institute of Geology and Palaeontology,the Chinese Academy of Sciences,Nanjing.ORDOVICIAN GRAPTOLITE BIOSTRATIGRAPHY OF GONGCHENG,GUANGXI,CHINA[J].Journal of Stratigraphy,2004,28(2):158-167,191. |
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| Authors: | TANG Lan HAN Nai-ren ZHANG Yuan-dong China University of Geosciences Beijing College of Resource and Environment Guangxi University Nanning Guilin Institute of Technology Guilin Nanjing Institute of Geology and Palaeontology the Chinese Academy of Sciences Nanjing |
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| Institution: | TANG Lan,HAN Nai-ren,ZHANG Yuan-dong China University of Geosciences,Beijing,100083 College of Resource and Environment,Guangxi University,Nanning,530004 Guilin Institute of Technology,Guilin,541004 Nanjing Institute of Geology and Palaeontology,the Chinese Academy of Sciences,Nanjing,210008 |
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| Abstract: | The present paper deals with two sections of Huang’ai,Shengping and Tianlingkou Formations
in Gongcheng,Guangxi Autonomous Region used to be regarded as of Cambrian age due to the lacking of
fossils.In 1997 Ordovician graptolites indicating mainly Middle Ordovician were first discovered from the
rocks,and briefly reported in 1999.The details of these two sections are presented herein,and biostrati-
graphy discussed.The sections,located in the northeast of Gongcheng,Guangxi with considerably abun-
dant Ordovician graptolites,include the following 8 graptolite zones(in descending order):8.Nemagrap-
tus gracilis,7.Pterograptus elegans,6.Nicholosonograptus fasciculatus,5.Acrograptus ellesae,4.Undu-
lograptus austrodentatus,3.Exigraptus clavus,2.Isograptus caduceus of.imitatus,1.Didymograptus
(E.)abnomis.The graptolite biozones are comparable with those in SE China,Australia,Canada,North
America and Great Britain.The succession is believed to be representative of deep-water‘Isograptus’fa-
cies in the Zhujiang Region of South China. |
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| Keywords: | Ordovician graptolite biostratigraphy Gongcheng Guangxi |
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