| 贵州册亨中三叠统坡段组中上部石珊瑚及牙形石生物地层 |
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| 引用本文： | 薄婧方,姚建新,肖加飞,白宇明,彭传凯.贵州册亨中三叠统坡段组中上部石珊瑚及牙形石生物地层[J].地质学报,2017,91(2):487-497. |
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| 作者姓名： | 薄婧方 姚建新 肖加飞 白宇明 彭传凯 |
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| 作者单位： | 中国地质科学院地质研究所,中国地质科学院地质研究所,中国科学院地球化学研究所，矿床地球化学国家重点实验室,武警黄金第二支队,新疆地质矿产开发局第七地质大队 |
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| 基金项目： | 科技部科技基础性工作专项项目（编号 2015FY310100），国家自然科学基金项目（编号 41472030），中国地质调查局项目（编号 DD20160120-04，12120114026701，DD20160345） |
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| 摘 要： | 为进一步精确限定黔西南中三叠统坡段组的地质时代,论文选择贵州册亨中三叠统坡段组典型剖面开展了石珊瑚及牙形石生物地层研究,在中三叠统坡段组(中上部)识别出石珊瑚3属3种,它们包括Pentasmilia zaitingnaensis,Pinacophyllum spizzensis,Gillastraea delicate;识别出牙形石Neogondolella constricta带。该带除含有带分子外,还含有Neogondolella bulgarica,Neogondoela navicula,Neogondolella acuta,Neogondolella alpina alpina,Cratognathodus kochi,Ozarkodina tortilis,Prioniodinasp.,Lonchodinasp.等重要牙形石。通过对牙形石特征的分析和国内外同名带的对比,认为坡段组Neogondolella constricta带大体可与贵州省盘县地区羊圈-楚皮凹剖面中三叠统关岭组上段、贵州罗甸关刀(2)剖面关刀岩楔、和云南开远马者哨法郎组的同名化石带对比,进而确定贵州册亨地区坡段组含牙形石Neogondolella constricta带的地层时代为安尼期的Illyrian亚期。
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| 关 键 词： | 石珊瑚 牙形石生物地层 坡段组 Illyrian 亚期 册亨 贵州省 |
| 收稿时间： | 2016/8/2 0:00:00 |
| 修稿时间： | 2016/9/22 0:00:00 |
Scleractinian Coral and Conodont Biostratigraphy of the Middle-Upper part of the Poduan Formation in Ceheng, Guizhou Province, South China |
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| Bo Jingfang,Yao Jianxin,Xiao Jiafei,Bai Yuming and Peng Chuankai.Scleractinian Coral and Conodont Biostratigraphy of the Middle-Upper part of the Poduan Formation in Ceheng, Guizhou Province, South China[J].Acta Geologica Sinica,2017,91(2):487-497. |
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| Authors: | Bo Jingfang Yao Jianxin Xiao Jiafei Bai Yuming and Peng Chuankai |
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| Institution: | nstitute of Geology, Chinese Academy of Geological Sciences,nstitute of Geology, Chinese Academy of Geological Sciences,State key Laboratory of Ore Deposit Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences,No. 2 Gold Geological Party of CAPF,No. 7 Geological Party, Xinjiang Bureau of Geology and Minerals Exploration |
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| Abstract: | Abstract: To further determine the biological appearance and composition features of corals and conodonts in Poduan Formation, the geological age of Poduan Formation in south western part of Guizhou and the contrast relationship between conodonts and other categories, the typical section of Poduan Formation in Ceheng is selected to carry out the research on corals and conodont biostratigraphy. Three species of scleractinian corals, Pentasmilia zaitingnaensis, Pinacophyllum spizzensis and Gillastraea delicate, and one conodont zone, Neogondolella constricta are identified in middle-upper part of the Poduan Formation in Ceheng. Besides Neogondolella constricta, there are some other important conodonts: Neogondolella bulgarica, Neogondoela navicula, Neogondolella acuta, Neogondolella alpina alpine, Cratognathodus kochi, Ozarkodina tortilis, Prioniodina sp., Lonchodina sp., etc. in the Neogondolella constricta zone. Based on the analysis of conodonts characteristics and regional stratigraphical correlation, this conodont zone of the Poduan Formation can be comparable to the following synonym conodont zone: the upper member of Guanling Formation of Yangjuan-Chupiwa Section in Panxian of Guizhou, Guandaoyanqi of Guandao Section (2) in Luodain of Guizhou, Falang Formation of Mazheshao in Kaiyuan of Yunnan, and the stratigraphic age of the middle-upper part of the Poduan Formation, can be considered as the Illyrian substages of the Anisian stage (middle Triassic). |
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| Keywords: | Scleractinian Coral Conodont Poduan Formation Illyrian substages Ceheng Guizhou Province |
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