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| 山东莱芜地区晚寒武世炒米店组牙形石生物地层学研究 | |
| 引用本文： | 武桂春,姚建新,纪占胜,刘书才.山东莱芜地区晚寒武世炒米店组牙形石生物地层学研究[J].微体古生物学报,2005,22(2):185-195. |
| 作者姓名： | 武桂春 姚建新 纪占胜 刘书才 |
| 作者单位： | 1. 中国地质科学院地质研究所,北京,100037;北京大学地球与空间科学学院,北京,100871 2. 中国地质科学院地质研究所,北京,100037 3. 山东省地质科学实验研究院,济南,250013 |
| 基金项目： | 中国地质调查局(项目编号200313000054)，国家自然科学基金会(项目编号40302002)项目资助。 |
| 摘 要： | 本文报道了山东莱芜地区黄羊山剖面炒米店组的牙形石生物地层学研究成果。在该剖面上寒武统的炒米店组建立了9个牙形石带,自上而下分别是Cordylodusangulatus带,C.lindstromi带,C.intermedius带,C.proavus带,Eoconodontusnotchpeakensis带,Proconodontusmuelleri带,P.posterocostatus带,P.tenuiserratus带和Prooneotodusrotundatus-Muelleroduserectus带。牙形石动物群的面貌显示该地区炒米店组顶部在时代上已属早奥陶世,表明该地区的寒武-奥陶界线与三山子组白云岩的底界并不一致,后者在层位上稍高。建立并描述了一副牙形石新种Westergaardodinahuangyangshanensissp.nov.。 |
| 关 键 词： | 牙形石带 黄羊山剖面 晚寒武世 寒武-奥陶系界线 炒米店组 三山子组 莱芜地区 山东 |
| 修稿时间： | 2004年2月10日 |
THE CONODONT BIOSTRATIGRAPHY OF THE UPPER CAMBRIAN CHAOMIDIAN FORMATION IN THE LAIWU AREA, SHANDONG PROVINCE |
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| WU Gui-chun,YAO Jian-xin,JI Zhan-sheng,LIU Shu-cai.THE CONODONT BIOSTRATIGRAPHY OF THE UPPER CAMBRIAN CHAOMIDIAN FORMATION IN THE LAIWU AREA, SHANDONG PROVINCE[J].Acta Micropalaeontologica Sinica,2005,22(2):185-195. | |
| Authors: | WU Gui-chun YAO Jian-xin JI Zhan-sheng LIU Shu-cai |
| Institution: | WU Gui-chun1,2),YAO Jian-xin1),JI Zhan-sheng1) and LIU Shu-cai3) 1) Institute of Geology,Chinese Academy of Geological Sciences,Beijing 100037 2) School of Earth and Space Sciences,Peking University,Beijing 100871 3) Experimental Institute of Geological Science,Jinan 250013 |
| Abstract: | A new Cambro-Ordovician boundary section, Huangyangshan section in Laiwu area, Western Shandong, is reported in this paper. Nine conodont zones are established in Chaomidian Formation of middle to upper Cambrian. They are described respectively in descending order as Cordylodus angulatus Z.,C. lindstromi Z.,C. intermedius Z.,C. proavus Z.,Eoconodontus notch KG-*9]peakensis Z.,Proconodontus muelleri Z.,Proconodontus posterocostatus Z.,P. tenuiserratus Z.,and Prooneotodus rotundatus-Muellerodus erectus Z. Since Cordylodus angulatus fauna belongs to earlier Ordovician, the Cambro-Ordovician boundary must be located within the uppermost part of the Chaomidian Limestone. And there exists a clear inconsistency between the lithological boundary and the biological one for the latter being a little lower than the former. A new paraconodont species Westergaardodina huangyangshanensis sp. nov. is described in this paper too. |
| Keywords: | Conodont zonations Huangyangshan section Cambro-Ordovician boundary Chaomidian Formation Sanshanzi Formation Laiwu Shandong |
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