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青海卡巴纽尔多地区上三叠统巴颜喀拉山群牙形石的发现及其意义
引用本文:白国典, 王坤, 陈泳霖, 李伟, 谢朝永, 何凯. 2018. 青海卡巴纽尔多地区上三叠统巴颜喀拉山群牙形石的发现及其意义. 西北地质, 51(4): 24-32.
作者姓名:白国典  王坤  陈泳霖  李伟  谢朝永  何凯
作者单位:河南省金属矿产成矿地质过程与资源利用重点实验室, 河南省地质调查院, 河南 郑州 450001
基金项目:中国地质调查局区域地质调查项目“青海省曲麻莱县卡巴纽尔多地区I46E003021、I46E004021、I46E005021三幅1∶5万区域地质矿产调查”(12120113033018)
摘    要:在青藏高原北部卡巴纽尔多湖-错坎巴昂日东湖一带上三叠统巴颜喀拉山群中首次发现牙形石Epigondolella sp.、Metapolygnathus communisti、Metapolygnathus spp.、Metapolygnathus primitius及有孔虫Gaudryina sp.、Jacullella sp.、Verneulinoides maurtii(Terquem)、Gaudryina triassica Trifonova、Ammodiscus sp.等。其中,Epigondolella与Metapolygnathus均为晚三叠世诺利期典型牙形石和常见类型,有孔虫亦显示为晚三叠世常见分子,从而为厘定该套地层时代提供了重要生物依据,对于该地区巴颜喀拉山群形成于早三叠世和中三叠世早期的观点有待于重新审视。

关 键 词:牙形石   诺利期   巴颜喀拉山群   卡巴纽尔多   青海
收稿时间:2017-12-03
修稿时间:2018-06-07

Discovery of the Conodonts in Upper Triassic Bayankalashan Group,Cabanualdo Region,Qinghai Province and Its Significance
BAI Guodian, WANG Kun, CHENG Yonglin, LI Wei, XIE Chaoyong, HE Kai. 2018. Discovery of the Conodonts in Upper Triassic Bayankalashan Group, Cabanualdo Region, Qinghai Province and Its Significance. Northwestern Geology, 51(4): 24-32.
Authors:BAI Guodian  WANG Kun  CHENG Yonglin  LI Wei  XIE Chaoyong  HE Kai
Affiliation:Key Laboratory of Ore Forming Processes and Resources Utilization of Metal Minerals in Henan Province, Henan Institute of Geological Survey, Zhengzhou 450001, Henan, China
Abstract:Conodonts (Epigondolella sp., Metapolygnathus communisti, Metapolygnathus spp., Metapolygnathus primitius) and foraminifers (Gaudryina sp., Jacullella sp., Verneulinoides maurtii (Terquem), Gaudryina triassica Trifonova, Ammodiscus sp.) are firstly discovered in Upper Triassic Bayankalashan Group, Cabanualdo Lake-Khampat Kardong Lake region, northern Qinghai-Tibet Plateau. In which, Epigondolella and Metapolygnathus are typical and vary common conodonts in Norian Stage of Late Triassic Period. The foraminifers are also show as common elements of Late Triassic Period. Thus, on the basis of these important biological data, the strata age in this area can be determined. The traditional opinion of Bayankalashan Group Group formed from Early Triassic to Middle Triassic in this area needs to be reviewed.
Keywords:Conodonts  Norian  Bayankalashan Group  Cabanualdo  Qinghai
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