Conodont biostratigraphic division of Lower Permian-Lower Triassic carbonate rocks in Cuoqin Basin, Tibet
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摘要:
措勤盆地下二叠统昂杰组之上广泛发育碳酸盐岩沉积，前人先后对这套碳酸盐岩进行了解体，建立了多个地层单元。本次报道剖面为盆地中的二叠系-三叠系的连续整合沉积剖面，通过牙形石研究在这套碳酸盐岩中识别出了下二叠统-下三叠统的5个牙形石带，即：Mesogondolella siciliensis-Sweetognathodus subsymmetricus带、Mesogondolella idahoensis带、Jingondolella aserrata带、Clarkina meishanensis带、Neospathodus dieneri带，并将下拉组时代修订为下二叠统空谷期-中二叠统末。
Abstract:Carbonate sediment is widely developed above Lower Permain Angjie Formation in Coqin basin, which was disintegrated by previous research to establish several formations. Five conodont zones of Lower Permian-Lower Triassic were identified in the carbonate rocks through conodont studies, namely Mesogondolella siciliensis -Sweetognathodus subsymmetricu zone, Mesogondolella idahoensis zone, Jingondolella aserrata zone, Clarkina meishanensis zone, Neospathodus dieneri zone, and the stratigraphic age of the Xiala Formation was constrained at Lower Permian Kungurian-the later of Middle Permian.
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致谢: 本文化石鉴定由华北油田研究院张放老师完成，并经南京古生物研究所相关专家复核，两位审稿专家提出了宝贵修改意见和建议，在此一并表示感谢。
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图 1 研究区地质简图
1—第四系全新统；2—第四系更新统；3—芒乡组；4—典中组；5—接奴群；6—郎山组；7—多尼组；8—坚扎弄组；9—下拉组；10—拉嘎组；11—永珠组；12—晚白垩世石英闪长玢岩；13—断层；14—样品位置
Figure 1. Geological map of the study area
1-Quaternary holocene; 2-Quaternary pleistocene; 3-Mangxiang Formation; 4-Dianzhong Formation; 5-Jienu Group; 6-Langshan Formation; 7-Duoni Formation; 8-Jianzhanong Formation; 9-Xiala Formation; 10-Laga Formation; 11-Yongzhu Formation; 12-Late Cretaceous quartz diorite porphyrite; 13-Fault; 14-The position of the sample
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图 2 织弄剖面中牙形石在地层中的分布
Figure 2. Stratigraphic distribution of conodonts at the Zhinong profile
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图 3 织弄剖面的牙形石显微照片（线比例尺长度代表100 μm）
1, 2, 5~9, 11~15b, 16~24, 26a, 27, 28—口视；3—反口视；4, 10, 15a, 25, 26b—侧视；1~7—西西里中舟刺，发现于PM03-24-WT1；8、9—爱达华中舟刺，发现于PM03-25-WT1；10—小欣德齿刺，发现于PM03-27-WT1；11—西西里中舟刺，发现于PM03-28-WT1；12—爱达华中舟刺, 发现于PM03-28-WT1；13、14—西西里中舟刺，发现于PM03-29-WT1；15a, 15b—莫夫肖特什双颚刺，发现于PM03-29-WT1；16—矛刺，发现于PM03-29-WT1；17、18—无锯齿金舟刺，发现于PM03-31-WT1；19—瘤状伊朗颚刺，发现于PM03-33-WT1；20—脊克拉科刺，发现于PM03-34-WT1；21、22—煤山克拉科刺，发现于PM03-35-WT1；23—煤山克拉科刺，发现于PM03-36-WT1；24—张氏克拉科刺，发现于PM03-36-WT1；25—内华达新欣德齿刺，发现于PM03-36-WT1；26a、26b—伊朗颚刺，发现于PM03-36-WT1；27—迪内尔新铲齿刺，发现于PM03-40-WT1；28—迪内尔新铲齿刺，发现于PM03-40-WT2
Figure 3. Photomicrograph of conodontites from the Zhinong profile (The length of the line scale represents 100 μm)
1, 2, 5~9, 11~15b, 16~24, 26a, 27, 28-Oral view; 3-Excessive penetration view; 4, 10, 15a, 25, 26b-Side view; 1~7-Mesogondolella siciliensis, were found in PM03-24-WT1 samples; 8, 9-Mesogondolella idahoensis, were found in PM03-25-WT1 samples; 10-Hindeodus minutus, was found in PM03-27-WT1 sample; 11-Mesogondolella siciliensis, was found in PM03-28-WT1 sample; 12-Mesogondolella idahoensis, were found in PM03-28-WT1 sample; 13, 14-Mesogondolella siciliensis, were found in PM03-29-WT1 samples; 15a, 15b-Diplognathodus movschoitshi, were found in PM03-29-WT1 samples; 16-Lochodina sp., was found in PM03-29-WT1 sample; 17, 18-Jingondolella aserrata, were found in PM03-31-WT1 samples; 19-Iranognathus punctatus, was found in PM03-33-WT1 samples; 20-Clarkina carinata, was found in PM03-34-WT1 samples; 21, 22-Clarkina meishanensis, were found in PM03-35-WT1 samples; 23-Clarkina meishanensis, was found in PM03-36-WT1 samples; 24-Clarkina zhangi Mei, was found in PM03-36-WT1 samples; 25-Neohindeodella nevadensis, was found in PM03-36-WT1 samples; 26a, 26b-Iranognathus sp., were found in PM03-36-WT1 samples; 27-Neospathodus dieneri, was found in PM03-40-WT1 samples; 28-Neospathodus dieneri, was found in PM03-40-WT2 samples
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Bai Peirong, Xiong Xingguo, Ma Desheng, Jiang Kaiyuan, Li Yuesen, Wu Tao. 2019. Discovery of Middle Jurassic Ostracoda fossils and discussion on stratigraphic assignment in the Duobuza aera of Gaze County, Tibet[J]. Guizhou Geology, 36(3): 228-231 (in Chinese with English abstract). http://en.cnki.com.cn/Article_en/CJFDTotal-GZDZ201903005.htm
Chen Qinghua, Wang Jianping, Wang Shaolan, Wu Kongyou. 1998. Discovery of Upper Permian in Coqen Basin and its geological significance[J]. Chinese Science Bulletin, 43(19): 2111-2114 (in Chinese). doi: 10.1360/csb1998-43-19-2111
Cheng Liren, Wang Tianwu, Li Cai, Wu Shizhong. 2002. Establishment of the Upper Permian Mujiu Co Formation and Rugose coral assemblage in the Xainza area, northern Tibet[J]. Geological Bulletin of China, 21(3): 140-143(in Chinese with English abstract). http://www.researchgate.net/publication/285452481_Establishment_of_the_Upper_Permian_Mujiuco_Formation_and_rugose_coral_assemblage_in_the_Xainza_area_northern_Tibet
Charles M Henderson, Mei Shilong. 2003. Stratigraphic versus environmental significance of Permian serrated conodonts around the Cisuralian-Guadalupian boundary: New evidence from Oman[J]. Palaeogeography Palaeoclimatology Palaeoecology, S0031-0182 (02) 00669 -7. http://www.sciencedirect.com/science/article/pii/S0031018202006697
Ji Zhansheng, Yao Jianxin, Wu Guichun, Liu Guizhong. 2006. Discovery of Late Triassic Norian Epigondolella in the Xiala Formation in the Dibu Co area, Coqen County, Tibet, China[J]. Geological Bulletin of China, 25(1/2): 138-141(in Chinese with English abstract). http://en.cnki.com.cn/Article_en/CJFDTOTAL-ZQYD2006Z1021.htm
Ji Zhansheng, Yao Jianxin, Wu Guichun. 2007. Revision of the age of the Xiagangjiang flora and its related strata in the Gerze area, northern Tibet, China[J]. Geological Bulletin of China, 26(8): 953-959(in Chinese with English abstract). http://ci.nii.ac.jp/naid/10026542204
Ji Zhansheng, Yao Jianxin, Wu Guichun. 2007. Stratigraphic division of the marine Triassic in the Coqên area, western Gangdise, Tibet[J]. Geological Bulletin of China, 26(8): 947-952(in Chinese with English abstract).
Ji Zhansheng, Yao Jianxin, Wu Guichun, Sun Qian, Shi Qiuyuan, He Jifu, Li Hao, Liu Zhenyu, Guo Anchen, Hou Zhaoshuo, Li Dongze. 2018. Stratigraphic progress of the Coqen Basin and redefinition of the Upper Permian-Jurassic stratigraphic sequence[J]. Acta Geoscientica Sinica, 39(4): 401-407 (in Chinese with English abstract). http://www.researchgate.net/publication/329376560_Stratigraphic_Progress_of_the_Coqen_Basin_and_Redefinition_of_the_Upper_Permian-Jurassic_Stratigraphic_Sequence
Ji Zhansheng, Yao Jianxin, Wu Guichun. 2007. Discovery of Permian and Triassic conodonts in the Shiquanhe area, Ngari, western Tibet, China and their significances[J]. Geological Bulletin of China, 26(4): 383-397(in Chinese with English abstract).
Ji Zhansheng, Yao Jianxin, Wu Guichun, Sun Qian, Shi Qiuyuan, Li Hao, He Jifu, Zhang Shaowen, 2018. Land submerged to carbonate platform by conodonts: paleoenvironment reconstruction of the western Gangdese in Tibet during Triassic[J]. China Geology, 1(4): 450-452. doi: 10.31035/cg2018053.
Li Yinglie, Wu Xinhe, Wang Rui. 2018. Multiple fossils found in Nima Basin, Tibet: New evidence for stratigraphic division[J]. Geology in China, 45(6): 1310-1311(in Chinese with English abstract).
Li Ming, Lin Baoyu, Song Yanyan. 2019. Distribution and ages of Ordovician and Silurian marine red beds in Tibet[J]. Acta Geoscientica Sinica, 40(3): 428-446 (in Chinese with English abstract).
Li Zeyu, Liu Han, Duan Yaoyao, Li Jun, Gou Zhengbin. 2019. Sedimentary facies and sedimentary evolution of the Oligocene Rihongla Formation in the Chejiaco area, Ngamring, Xizang[J]. Sedimentary Geology and Tethyan Geology, 39(1): 32-41 (in Chinese with English abstract). http://en.cnki.com.cn/Article_en/CJFDTotal-TTSD201901004.htm
Mei S, Zhang K, Wardlaw B R. 1998. A refined succession of Changhsingian and Griesbachian neogondolellid conodonts from the Meishan section, candidate of the global stratotype section and point of the Permian-Triassic boundary[J]. Palaeogeography Palaeoclimatology Palaeoecology, S0031-0182(98)00112-6. http://www.sciencedirect.com/science/article/pii/S0031018298001126
Mei Shilong, Jin Yugan, Wardlaw B R. 1994. Succession of Wuchiapingian conodonts form northeastern Sichuan and its worldwide correlation[J]. Acta Micropalaeontologica Sinica, 11(2): 121-140(in Chinese with English abstract). http://europepmc.org/abstract/CBA/268126
Shi Qiuyuan, Ji Zhansheng, Wu Guichun, Sun Qian, He Jifu, Guo Anchen, Hou Zhaoshuo, Li Dongze. 2021. Establishment of the Middle-Upper Triassic Garezhadi Formation in the Coqen Block, Tibet[J]. Geological Bulletin of China, 40(1): 22-30(in Chinese with English abstract).
Tang Hua, Xu Lin, Luo Shaoqiang, Chen Yongdong, Xiao Jin. 2020. The discovery of bivalve fossils in Nimu area in Tibet and determination of related strata[J]. Geology in China, 47(3): 879-880 (in Chinese with English abstract).
Wang Chengyuan, Wang Zhihao. 2016. Conodont Biostratigraphy in China[M]. Zhejiag: Zhejiang University Press(in Chinese with English abstract).
Wang Chengyuan, Wu Jianjun, Zhu Tong. 1998. Permian conodonts from the Penglaitan Section, Laipin County, Guangxi and the base of the Wuchiapingian Stage(lopingian series)[J]. Acta Micropalaeontologica Sinica, 15(3): 225-235 (in Chinese with English abstract). http://europepmc.org/abstract/cba/317991
Wu Guichun, Yao Jianxin, Ji Zhansheng. 2007. Triassic conodont biostratigraphy in the Coqên area, western Gangdise, Tibet, China[J]. Geological Bulletin of China, 26(8): 938-946(in Chinese with English abstract). http://en.cnki.com.cn/Article_en/CJFDTOTAL-ZQYD200708003.htm
Wu Guichun, Ji Zhansheng, Julie A. Trotter, Yao Jianxin, Zhou Liqin. 2014. Conodont biostratigraphy of a new Permo-Triassic boundary section at Wenbudangsang, north Tibet[J]. Palaeogeography, Palaeoclimatology, Palaeoecology, 411: 188-207. doi: 10.1016/j.palaeo.2014.06.016
Wu Guichun, Ji Zhansheng, Yao Jianxin, He Jifu, Sun Qian, Shi Qiuyuan, Li Hao, Zhong Zhao, Liu Zhenyu, Guo Anchen, Hou Zhaoshuo, Li Dongze, Shen Bin. 2017. Age revision of the dolomite to the west of Namtso and the significance of the discovered oil-immersed dolomite[J]. Acta Geologica Sinica, 91(12): 2867-2880(in Chinese with English abstract). http://search.cnki.net/down/default.aspx?filename=DZXE201712020&dbcode=CJFD&year=2017&dflag=pdfdown
Wu Guichun, Ji Zhansheng, Sun Qian, Shi Qiuyuan, He Jifu, Li Hao, Liu Zhenyu, Guo Anchen, Hou Zhaoshuo, Li Dongze. 2018. The Early Triassic conodonts in Rendo Area of Zhongba County, Tibet, and paleogeographic pattern of the west Gangdise Block in Early Triassic[J]. Acta Geoscientica Sinica, 39(4): 409-418 (in Chinese with English abstract). http://www.researchgate.net/publication/329375649_The_Early_Triassic_Conodonts_in_Rendo_Area_of_Zhongba_County_Tibet_and_Paleogeographic_Pattern_of_the_West_Gangdise_Block_in_Early_Triassic
Xu Lin, Min Yongming. 2017. Stratigraphic correlation in the siling Co-Tari Co Region, Tibet[J]. Acta Geologica Sichuan, 129(1): 9-15(in Chinese with English abstract). http://en.cnki.com.cn/Article_en/CJFDTotal-SCDB201701002.htm
白培荣, 熊兴国, 马德胜, 蒋开源, 李月森, 吴滔. 2019. 西藏改则多不杂地区中侏罗世介形类化石的发现及其地层归属探讨[J]. 贵州地质, 36(3): 228-231. https://www.cnki.com.cn/Article/CJFDTOTAL-GZDZ201903005.htm 陈清华, 王建平, 王绍兰, 吴孔友, 1998, 西藏措勤盆地上二叠统的发现及其地质意义[J]. 科学通报, 1998, 43(19): 2111-2114. doi: 10.3321/j.issn:0023-074X.1998.19.023 程立人, 王天武, 李才, 武士忠. 2002. 藏北申扎地区上二叠统木纠错组的建立及皱纹珊瑚组合[J]. 地质通报, 21(3): 140-143. doi: 10.3969/j.issn.1671-2552.2002.03.006 纪占胜, 姚建新, 武桂春, 刘贵忠. 2006. 西藏措勤县敌布错地区"下拉组"中发现晚三叠世诺利期高舟牙形石[J]. 地质通报, 25(1-2): 138-141. https://www.cnki.com.cn/Article/CJFDTOTAL-ZQYD2006Z1021.htm 纪占胜, 姚建新, 武桂春. 2007. 关于藏北改则地区夏岗江植物群及其地层时代的修订意见[J]. 地质通报, 26(8): 953-959. doi: 10.3969/j.issn.1671-2552.2007.08.006 纪占胜, 姚建新, 武桂春. 2007. 西藏冈底斯西段措勤地区海相三叠系的划分[J]. 地质通报, 26(8): 947-952. doi: 10.3969/j.issn.1671-2552.2007.08.005 纪占胜, 姚建新, 武桂春. 2007. 西藏西部狮泉河地区二叠纪和三叠纪牙形石的发现及其意义[J]. 地质通报, 26(4): 383-397. doi: 10.3969/j.issn.1671-2552.2007.04.003 纪占胜, 姚建新, 武桂春, 孙倩, 石秋圆, 何继富, 李浩, 刘振宇, 郭安臣, 侯召硕, 李东泽. 2018. 西藏措勤盆地的地层学研究进展及上二叠统-侏罗系地层序列的厘定[J]. 地球学报, 39(4): 401-407. https://www.cnki.com.cn/Article/CJFDTOTAL-DQXB201804003.htm 李英烈, 伍新和, 汪锐. 2018. 西藏尼玛盆地发现多种化石: 地层划分新证据[J]. 中国地质, 45(6): 1310-1311. http://geochina.cgs.gov.cn/geochina/ch/reader/view_abstract.aspx?file_no=20180622&flag=1 李明, 林宝玉, 宋妍妍. 2019. 西藏奥陶纪和志留纪海相红层的分布与时代[J]. 地球学报, 40(3): 428-446 https://www.cnki.com.cn/Article/CJFDTOTAL-DQXB201903005.htm 李泽瑜, 刘函, 段瑶瑶, 李俊, 苟正彬. 2019. 西藏昂仁县扯假错渐新统日贡拉组地层沉积相及沉积演化特征[J]. 沉积与特提斯地质, 39(1): 32-41. doi: 10.3969/j.issn.1009-3850.2019.01.004 梅仕龙, 金玉玕, 瓦特罗B R. 1994. 川东北二叠纪吴家坪期牙形石(刺)序列及其世界对比[J]. 微体古生物学报, 11(2): 121-140. https://www.cnki.com.cn/Article/CJFDTOTAL-WSGT402.000.htm 石秋圆, 纪占胜, 武桂春, 孙倩, 何继富, 郭安臣, 侯召硕, 李东泽. 2021. 西藏措勤断块中-上三叠统嘎热扎地组的建立[J]. 地质通报, 40(1): 22-30. https://www.cnki.com.cn/Article/CJFDTOTAL-ZQYD202101004.htm 唐华, 徐琳, 罗绍强, 陈永东, 肖进. 2020. 西藏尼木地区双壳类化石的发现及其对相关地层的厘定[J]. 中国地质, 47(3): 879-880. http://geochina.cgs.gov.cn/geochina/ch/reader/view_abstract.aspx?file_no=20200323&flag=1 武桂春, 姚建新, 纪占胜. 2007. 西藏冈底斯西段措勤地区三叠纪牙形石生物地层特征[J]. 地质通报, 26(8): 938-946 doi: 10.3969/j.issn.1671-2552.2007.08.004 王成源, 王志浩. 2016. 中国牙形石生物地层[M]. 浙江: 浙江大学出版社. 王成源, 吴健君, 朱彤. 1998. 广西来宾蓬莱滩二叠纪牙形刺与吴家坪阶(乐平统)的底界[J]. 微体古生物学报, 15(3): 225-235. https://www.cnki.com.cn/Article/CJFDTOTAL-WSGT803.000.htm 武桂春, 纪占胜, 姚建新, 何继富, 孙倩, 石秋圆, 李浩, 仲昭, 刘振宇, 郭安臣, 侯召硕, 李东泽, 沈斌. 2017. 纳木错西岸白云岩的时代修订及油浸现象发现的意义[J]. 地质学报, (12): 2867-2880. doi: 10.3969/j.issn.0001-5717.2017.12.020 武桂春, 纪占胜, 孙倩, 石秋圆, 何继富, 李浩, 刘振宇, 郭安臣, 侯召硕, 李东泽. 2018. 西藏仲巴县仁多地区早三叠世牙形石及冈底斯西部早三叠世古地理格局[J]. 地球学报, 39(4): 409-418. https://www.cnki.com.cn/Article/CJFDTOTAL-DQXB201804004.htm 徐琳, 闵永明. 2017. 西藏色林错-它日错地区地层对比清理[J]. 四川地质学报, 129(1): 9-15. doi: 10.3969/j.issn.1006-0995.2017.01.002
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