Palynomorph fossil assemblages and ages of Muga-Gangri Rock Group in Gaize area of the middle and western part of Bangong Co-Nujiang suture zone in Tibet

BAI Peirong; XIONG Xingguo

doi:10.19388/j.zgdzdc.2020.04.08

Geological Survey of China > 2020 > 7(4): 60-66. > DOI: 10.19388/j.zgdzdc.2020.04.08

BAI Peirong, XIONG Xingguo. Palynomorph fossil assemblages and ages of Muga-Gangri Rock Group in Gaize area of the middle and western part of Bangong Co-Nujiang suture zone in Tibet[J]. Geological Survey of China, 2020, 7(4): 60-66. DOI: 10.19388/j.zgdzdc.2020.04.08

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Palynomorph fossil assemblages and ages of Muga-Gangri Rock Group in Gaize area of the middle and western part of Bangong Co-Nujiang suture zone in Tibet

BAI Peirong^1,2,,
XIONG Xingguo^1, ,

1.
Guizhou Institute of Geological Survey, Guiyang 550081, China
2.
Academician Workstation,Guizhou Institute of Geological Survey, Guiyang 550081, China

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Received Date: July 14, 2019
Revised Date: March 29, 2020

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Abstract

Abstract

The sedimentary age of Muga-Gangri Rock Group in the middle and western part of Bangong Co-Nujiang suture zone experienced the cleavage and extension of Bangong Co-Nujiang Ocean basin and the stage of extrusion convergence. The sedimentary age span is relatively large, but its sedimentation epoch limit is still inconclusive. In order to explore the relationship between the upper limit of the sedimentary age of Muga-Gangri Rock Group and the closure time of Bangong Co-Nujiang Ocean in the rectified area, through the field geological survey and indoor comprehensive research, the authors found the typical pollen molecule Dicheiropollis in Early Cretaceous. This discovery of pollen indicates that Muga-Gangri Rock Group in the middle and western part of Bangong Co-Nujiang suture zone continued to deposit in Early Cretaceous. These discoveries have great geological significance in the discussion of paleo geographical features, sedimentary environment and their development history in Mesozoic period in the middle and western part of Bangong Co-Nujiang suture zone.
- palynomorph fossil,
- Muga-Gangri Rock Group,
- Early Cretaceous,
- Bangong Co-Nujiang suture zone

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References

[1]	彭头平,杨修明,褚慧力,等.班公湖—怒江结合带改则地区洋岛组构模式与找矿重大发现——据西藏改则县1:5万I45E021005等六幅区调[J].中国地质调查,2015,2(2):12-23.
[2]	马德胜,熊兴国,白培荣.西藏改则县白弄铜金矿床地质特征及意义[J].中国地质调查,2015,2(4):66-70.
[3]	邓金火,吕鑫,钟靖俊,等.西藏康托地区早—中侏罗世木嘎岗日群沉积盆地分析及构造演化研究[J].中国地质调查,2015,2(6):34-41.
[4]	朱利东,李智武,杨文光,等.西藏1:5万改则东地区4幅区域地质调查主要成果[J].中国地质调查,2017,4(5):31-39.
[5]	西藏自治区地质矿产局.西藏自治区区域地质志[M].北京:地质出版社,1993.
[6]	西藏自治区地质矿产局.西藏自治区岩石地层[M].北京:地质出版社,1997.
[7]	四川省地质调查院.1:25万I44C004004幅区域地质调查报告[R].北京:中国地质调查局,2006.
[8]	曹圣华,肖晓林,欧阳克贵.班公湖—怒江结合带西段侏罗纪木嘎岗日群的重新厘定及意义[J].沉积学报,2008,26(4):559-564.
[9]	贵州省地质调查院.西藏1:5万改则县北亭贡南部地区4幅区域地质调查报告[R].北京:中国地质调查局,2012.
[10]	孙东立,徐均涛.西藏日土地区二叠纪、侏罗纪、白垩纪地层及古生物[M].南京:南京大学出版社,1991:1-210.
[11]	潘桂棠,王立全,张万平,等.青藏高原及邻区大地构造图及说明书(1:1 500 000)[M].北京:地质出版社,2013:83-95.
[12]	王立全,潘桂棠,丁俊,等.青藏高原及邻区地质图及说明书(1:1 500 000)[M].北京:地质出版社,2013:70-75.
[13]	曾禹人,黄建国,马德胜,等.西藏班公湖—怒江结合带木嘎岗日岩群时代上限的新证据——来自恐弄拉地区早白垩世早期孢粉化石的报道[J].地质通报,2016,35(12):2027-2032.
[14]	黎文本. 宁芜、庐江地区中生代火山沉积岩系中的孢粉组合[C]//中国科学院铁矿地质学术会议编辑组.中国科学院铁矿地质学术会议论文选集:地层和古生物.北京:科学出版社,1977:132-133.
[15]	Vakkrcmecv V A.Range and paleoenology of Mesozoic conifers[J].Cheirolepidiaceae Paleanl Zh,1970,70(1):19-34.
[16]	Trevisan L.Dicheiropollis,a pollen type from Lower Cretaceous sediments of southern Tuscany (Italy)[J].Pollen Spores,1971,13(4):561-596.
[17]	Jardiné S,Biens P,Doerenkamp A.Dicheiropollis etruscus,un pollen caracteristique du Crétacé inférieur Afro-Sudaméricain.Conséquences pour l'évaluation des unites climatiques et implications dans la derive des continents[J].Sci Géol Bull Mém,1974,27(1/2):87-100.
[18]	江德昕,王永栋,何卓生,等.新疆塔里木拜城地区早白垩世舒善河组孢粉组合[J].微体古生物学报,2007,24(3):247-260.
[19]	黎文本,陈金华.白垩系[M]//周志毅,陈丕基.塔里木生物地层和地质演化.北京:科学出版社,1990:288-307.
[20]	黎文本. 塔里木盆地北部早白垩世孢粉组合[J].古生物学报,2000,39(1):28-45.
[21]	郭宪璞,王大宁,丁孝忠,等.塔里木盆地北部早—中白垩世孢粉时代和生物地理区系研究新进展[J].地质论评,2011,57(6):870-880.
[22]	张望平. Dicheiropollis在云南富民盆地安宁组孢粉组合中的出现及其意义[J].微体古生物学报,1995,12(1):39-49.
[23]	Li J G,Batten D J.Early Cretaceous palynofloras from the Tanggula Mountains of the northern Qinghai-Xizang (Tibet) Plateau,China[J].Cretaceous Res,2004,25(4):531-542.
[24]	白培荣,熊兴国,蒋开源,等.北羌塘盆地中部笙根地区索瓦组上段的孢粉型化石组合及时代[J].微体古生物学报,2019,36(2):190-198.

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Palynomorph fossil assemblages and ages of Muga-Gangri Rock Group in Gaize area of the middle and western part of Bangong Co-Nujiang suture zone in Tibet

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