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摘要:
羌塘盆地位于可可西里-金沙江缝合带与班公湖-怒江缝合带之间,其沉积演化对于正确认识古、中特提斯洋盆构造演化具有重要意义。本文通过沉积序列、岩相古地理、沉积盆地分析,结合年代地层学等最新研究成果,建立了羌塘中生代盆地(T3-K1)的沉积演化模式,讨论了羌塘盆地演化与古特提斯洋盆关闭、中特提斯洋盆形成的关系。羌塘中生代盆地(T3-K1)是由冲洪积相沉积超覆开始的,总体上为一个向上变深的海侵序列,表现为冲洪积相、河湖相逐渐演化为滨海相及浅海相,可划分出3种典型的沉积超覆类型及5个主要阶段的沉积演化序列。羌塘中生代盆地整体上为一个由前陆盆地演化为裂谷盆地、被动大陆边缘盆地、最终转化为活动大陆边缘盆地并萎缩消亡的叠合盆地。羌塘早-中三叠世前陆盆地的关闭,与古特提斯洋盆的关闭有关,羌塘中生代盆地(T3-K1)的演化受中特提斯洋的快速开启及关闭的制约。
Abstract:The Qiangtang Basin is located between the Hoh Xil-Jinsha River suture zone and the Bangong-Nujiang suture zone. Its sedimentary evolution is of great significance for understanding the tectonic evolution of the Paleo-Tethys and Meso-Tethys Oceans. In this study, the authors established the sedimentary evolution mode of the Mesozoic basin (T3-K1) based on the sedimentary sequences, lithofacies paleogeography, analysis of sedimentary basin, and the latest research results of chronostratigraphy, and then discussed the relationship between the evolution of the Qiangtang Basin and the closure of the PaleoTethys Ocean as well as the opening of the Meso-Tethys Ocean. The Mesozoic (T3-K1) Qiangtang Basin was affected by the diluvial-alluvial facies sedimentary overlap. The sedimentary sequence has undergone an evolution from diluvial-alluvial facies, lacustrine to coastal and shallow-seas facies, which shows a deepening upward transgressive sequence. It can be divided into three typical sedimentary overlap types and five major stages of sedimentary evolution sequence. The Mesozoic Qiangtang Basin is a superimposed basin that evolved from foreland basin into rift basin, then into passive continental marginal basin, and finally into an active continental marginal basin through shrinking and vanishing. The closure of the Early-Middle Triassic foreland basin for the Qiangtang Basin was related to the closure of the Paleo-Tethys Ocean basin. The evolution of Mesozoic (T3-K1) Qiangtang Basin was restricted by the rapid opening and closing of the Meso-Tethys Tethys Ocean basin.
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Key words:
- Tethys Ocean /
- Qiangtang Basin /
- sedimentary evolution /
- lithofacies paleogeography
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图 2 羌塘盆地地球物理特征与沉积-构造地层划分据(王剑等,2010)
Figure 2.
表 1 羌塘盆地中生代地层划分与对比据(王剑等, 2009修改)
Table 1. Mesozoic stratigraphic division and correlation of the Qiangtang Basin(modified from Wang Jian et al., 2009)
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Chen S S, Shi R.D, Yi G D, Zou H B. 2016. Middle Triassic volcanic rocks in the Northern Qiangtang (Central Tibet):Geochronology, petrogenesis, and tectonic implications[J]. Tectonophysics, 666:90-102. doi: 10.1016/j.tecto.2015.10.017
Fan J J, Li C, Wang M, Liu Y M, Xie C M. 2017b. Remnants of a Late Triassic ocean island in the Gufeng area, northern Tibet:Implications for the opening and early evolution of the BangongNujiang Tethyan Ocean[J]. Journal of Asian Earth Sciences, 135:35-50. doi: 10.1016/j.jseaes.2016.12.015
Fan J J, Li C, Xie C M, Liu Y M, Xu J X, Chen J W. 2017a. Remnants of late Permian-Middle Triassic ocean islands in northern Tibet:Implications for the late-stage evolution of the Paleo-Tethys Ocean[J]. Gondwana Research, 44:7-21. doi: 10.1016/j.gr.2016.10.020
Fan J J, Li C, Xie C M, Wang M, Chen J W. 2015. The evolution of the Bangong-Nujiang Neo-Tethys ocean:Evidence from zircon UPb and Lu-Hf isotopic analyses of Early Cretaceous oceanic islands and ophiolites[J]. Tectonophysics, 655:27-41. doi: 10.1016/j.tecto.2015.04.019
Feng Xinglei, Fu Xiugen, Tan Fuwen, Song Chunyan, Chen Wenbin. 2016. Geochemical characteristics and tectonic significance of Early Jurassic Quemo Co Formation in Woruoshan area, north Qiangtang basin[J]. Geology in China, 43(4):1227-1237(in Chinese with English abstract). https://www.researchgate.net/publication/292666265_Geochemical_characteristics_and_significance_of_hydrocarbon_source_rocks_in_the_Jurassic_Bi_Qu_Formation_in_the_north_Qiangtang_basin
Fu X G, Wang J, Qu W J, Duan T Z, Du A D, Wang Z J. 2008. Re-Os(ICP-MS) dating of marine oil shale in the Qiangtang Basin, northern Tibet, China[J]. Oil Shale, 25:47-55. doi: 10.3176/oil.2008.1.06
Fu X G., Wang J, Tan F W, Chen W B. 2010. The Late Triassic riftrelated volcanic rocks from eastern Qiangtang, northern Tibet(China):Age and tectonic implications[J]. Gondwana Research, 17:135-144. doi: 10.1016/j.gr.2009.04.010
Gao Chunwen, Jia Qingjun, Wei Chunguang. 2006. Study on the nature of Late Triassic prototype basin of Qiangtang Basin[J]. Geological Review, 52:198-206 (in Chinese with English abstract).
Girardeau J, Marcoux J, Allegre C J, Bassoullet J P, Tang Y K, Xiao X C, Zao Y G, Wang X B. 1984. Tectonic environment and geodynamic significance of the Neo-Cimmerian Donqiao Ophiolite, Bangong-Nujiang suture zone, Tibet[J]. Nature, 307:27-31. doi: 10.1038/307027a0
Hickey R L, Frey F A. 1982. Geochemical characteristics of boninite series volcanics:Implication for their source[J]. Geochemica et Cosmochemica Acta, 46:2099-2115. doi: 10.1016/0016-7037(82)90188-0
Hu P Y, Li C, Li J, Wang M, Xie C M, Wu Y W. 2014. Zircon U-PbHf isotopes and whole-rock geochemistry of gneissic granites from the Jitang complex in Leiwuqi area, eastern Tibet, China:Record of the closure of the Paleo-Tethys Ocean[J]. Tectonophysics, 623:83-99. doi: 10.1016/j.tecto.2014.03.018
Huang Jiqing, Chen Bingwei. 1987. Evolution of the Tethys Sea in China and Its Adjacent Regions[M]. Beijing:Geological Publishing House, 55-56 (in Chinese).
Kapp P, Yin A, Harrison T M, Ding L. 2005. Cretaceous-Tertiary shortening, basin development, and volcanism in central Tibet[J]. Geological Society of America Bulletin, 2005, 117:865-878. doi: 10.1130/B25595.1
Kapp P, Yin A, Manning C E, Harrison T M, Spurlin M, Ding L, Deng X, Wu C M. 2000. Blueschist-bearing metamorphic core complexes in the Qiangtang block reveal deep crustal structure of northern Tibet[J]. Geology, 28:19-22. doi: 10.1130/0091-7613(2000)28<19:BMCCIT>2.0.CO;2
Kapp P, Yin A, Manning C E, Harrison T M, Taylor M H, Ding L. 2003. Tectonic evolution of the early Mesozoic blueschist-bearing Qiangtang metermorphic belt, central Tibet[J]. Tectonics, 22:1043, doi:10.1029/2002TC001383.
Kerrich R, Wyman D, Fan J. 1998. Boninite series:Low Ti tholeiite associations from the 2.7 Ga Abitibi greenstone belt[J]. Earth and Planetary Science Letters, 164:303-316. doi: 10.1016/S0012-821X(98)00223-4
Li Cai, Cheng Liren, Yu Jiejiang, Zhang Baofu, Zhai Qingguo, Huang Xiaopeng, Chen Shouming, Xu Feng, Zhang Yichun. 2006. Regional Geological Report (1: 250, 000) for Mayigangri, P. R. C. 12-66 (in Chinese).
Li Cai, Zhai Qingguo, Chen Wen, Dong Yongsheng, Yu Jiejiang. 2007.Geochronology evidence of the closure of Longmu Co-Shuanghu suture, Qinghai-Tibet plateau:Ar-Ar and zircon SHIRIMP geochronology from ophiolite and rhyolite in Guoganjianian[J]. Acta Petrologica Sinica, 23(5):911-918 (in Chinese with English abstract).
Li J X, Qin K Z, Li G M, Richards J P, Zhao J X, Cao M J. 2014.Geochronology, geochemistry, and zircon Hf isotopic compositions of Mesozoic intermediate-felsic intrusions in central Tibet:petrogenetic and tectonic implications[J]. Lithos, 198-199:77-91. doi: 10.1016/j.lithos.2014.03.025
Li S, Ding L, Guimette C, Fu J J, Xu Q, Yue Y H, HenriquePinto R. 2017. The subduction-accretion history of the Bangong-Nujiang Ocean:Constraints from provenance and geochronology of the Mesozoic strata near Gaize, central Tibet[J]. Tectonophysics, 702:42-60. doi: 10.1016/j.tecto.2017.02.023
Li Yong, Wang Chengshan, Yi Haisheng, Shi He, Lin Jinhui, Zhu Lidong, Li Xianghui. 2001. Fill models of in the Qiangtang composite foreland basin in Qinghai-Xizang Plateau, China[J]. Acta Sedimentologica Sinica, 19 (1):20-27 (in Chinese with English abstract).
Liu W L, Xia B, Zhong Y, Cai J X, Li J F, Liu H F, Cai Z R, Sun Z L. 2014. Age and composition of the Rebang Co and Julu ophiolites, central Tibet:Implications for the evolution of the Bangong MesoTethys[J]. International Geology Review, 56:430-447. doi: 10.1080/00206814.2013.873356
Metcalfe I. 1988. Origin and assembly of Southeast Asian continental terranes, in Gondwana and Tethys, edited by M. G. AudleyCharles and A. Hallam[J]. Geological Society, London, Special Publication, 37:101-118. doi: 10.1144/GSL.SP.1988.037.01.08
Metcalfe I. 1996. Gondwanaland dispersion, Asian accretion, and evolution of eastern Tethys[J]. Australian Joural of Earth Sciences, 43:605-623. doi: 10.1080/08120099608728282
Metcalfe I. 2013. Gondwana dispersion and Asian accretion:Tectonic and palaeogeographic evolution of eastern Tethys[J]. Journal of Asian Earth Sciences, 66:1-33. doi: 10.1016/j.jseaes.2012.12.020
Pan G T, Wang L Q, Li R S, Yuan S H, Ji W H, Zhang W P, Wang B D. 2012. Tectonic evolution of the Qinghai-Tibet Plateau[J]. Journal of Asian Earth Sciences, 53:3-14. doi: 10.1016/j.jseaes.2011.12.018
Pearce J A, Deng W. 1990. The ophiolites of the Tibet geotraverse, Lhasa to Golmud (1985) and Lhasa to Kathmandu (1986)[J]. Philosophical Transactions of the Royal Society, A, 327:215-238.
Peng T P, Zhao G C, Fan W M, Peng B X, Mao Y S. 2015. Late Triassic granitic magmatismin the Eastern Qiangtang, Eastern Tibetan Plateau:geochronology, petrogenesis and implications for the tectonic evolution of the Paleo-Tethys[J]. Gondwana Research, 28:1494-1508.
Pullen A, Kapp P, Gehrels G E, Ding L, Zhang Q H. 2011.Metamorphic rocks in central Tibet:lateral variations and implications for crustal structure[J]. Geological Society of America Bulletin, 123:585-600. doi: 10.1130/B30154.1
Pullen A, Kapp P, Gehrels G E, Vervoort J D, Ding L. 2008. Triassic continental subduction in central Tibet and Mediterranean-style closure of the Paleo-Tethys Ocean[J]. Geology, 36:351-354. doi: 10.1130/G24435A.1
Şengör A M C, Altiner D, Cin A, Ustaömer T, Hsü K J. 1988. Origin and assembly of the Tethyside orogenic collage at the expense of Gondwana Land, in Gondwana and Tethys[J]. Geological Society London Special Publications, 37:119-181. doi: 10.1144/GSL.SP.1988.037.01.09
Shi R D. 2007. SHRIMP dating of the Bangong Lake SSZ-type ophiolite:Constraints on the closure time of ocean in the Bangong Lake-Nujiang River, northwestern Tibet[J]. Chinese Science Bulletin, 52(7):936-941. doi: 10.1007/s11434-007-0134-z
Shi R D, Yang J S, Xu Z Q, Qi X-X. 2004. Discovery of the boninite series volcanic rocks in the Bangong Lake ophiolite melange, western Tibet, and its tectonic implications[J]. Chinese Science Bulletin, 49(12):1272-1278. doi: 10.1360/04wd0006
Song P P, Ding L, Li Z Y, Lippert P C, Yang T S, Zhao X X, Fu J J, Yue Y H. 2015. Late Triassic paleolatitude of the Qiangtang block:Implications for the closure of the Paleo-Tethys Ocean[J]. Earth and Planetary Science Letters, 424:69-83. doi: 10.1016/j.epsl.2015.05.020
Tan Fuwen, Wang Jian, Li Yongtie, Du Baiwei, Zhu Zhongfa. 2004.Late Jurassic-Early Cretaceous strata and their sedimentary characteristics in the Qiangtang Basin, northern Tibet[J]. Geology in China, 31(4):400-405 (in Chinese with English abstract). http://or.nsfc.gov.cn/bitstream/00001903-5/263310/1/1000014871490.pdf
Wang Chengshan, Yi Haisheng, Li Yong. 2001. Geological Evolution and Oil and Gas Resources in the Qiangtang Basin[M]. Beijing:Geological Publishing House, 184-251 (in Chinese).
Wang Jian, Ding Jun, Wang Chengshan, Tan Fuwen. 2009. Survey and Evaluation on Tibet Oil and Gas Resources[M]. Beijing:Geological Publishing House, 210-214 (in Chinese).
Wang Jian, Fu Xiugen, Chen Wenxi, Wang Zhengjiang. 2007. The Late Triassic paleo-weathering crust in the Qiangtang basin, northern Tibet:geology, geochemistry and significance[J]. Acta Sedimentologica Sinica, 25(4):487-494 (in Chinese with English abstract).
Wang J, Fu X G, Chen W X, Wang Z J, Tan F W, Chen M, Zhuo J W.2008. Chronology and geochemistry of the volcanic rocks in Woruo Mountain region, Northern Qiangtang depression:Implications to the Late Triassic volcanic-sedimentary events[J]. Science in China Series D:Earth Sciences, 51:194-205. doi: 10.1007/s11430-008-0010-y
Wang Jian, Fu Xiugen, Tan Fuwen, Chen Ming, He Jianglin. 2010 A new sedimentary model for the Qiangtang Basin[J]. Acta Sedimentologica Sinica, 28(5):884-893 (in Chinese with English abstract).
Wang Jian, Tan Fuwen, Li Yalin, Li Yongtie, Chen Ming, Wang Chengshan, Guo Zujun, Wang Xiaolong, Du Baiwei, Zhu Zhongfa. 2004. The Potential of the Oil and Gas Resources in Major Sedimentary Basins on the Qinghai-Xizang Plateau[M]. Beijing:Geological Publishing House, 34-88 (in Chinese).
Wang X F, Metcalfe I, Jian P, Longqing H, Wang C. 2000. The Jinsha jiang-Ailaoshan suture zone, China:tectonostratigraphy, age and evolution[J]. Journal of Asian Earth Sciences, 18:675-690. doi: 10.1016/S1367-9120(00)00039-0
Wang Z W, Wang J, Fu X G, Feng X L, Wang D, Song C Y, Chen W B, Zeng S Q. 2017a. Petrography and geochemistry of upper Triassic sandstones from the Tumengela Formation in the Woruo Mountain area, North Qiangtang Basin, Tibet:Implications for provenance, source area weathering, and tectonic setting[J]. Island Arc, 26(4):DOI:10.1111/iar.12191.
Wang Z W, Wang J, Fu X G, Zhan W Z, Yu F, Feng X L, Song C Y, Chen W B, Zeng S Q. 2017b. Organic material accumulation of Carnian mudstones in the North Qiangtang Depression, eastern Tethys:Controlled by the paleoclimate, paleoenvironment, and provenance[J]. Marine and Petroleum Geology, 88:440-457. doi: 10.1016/j.marpetgeo.2017.08.029
Yang T N, Zhang H R, Liu Y X, Wang Z L, Song Y C, Yang Z S, Tian S H, Xie H Q, Hou K J. 2011. Permo-Triassic arcmagmatismin central Tibet:evidence fromzircon U-Pb geochronology, Hf isotopes, rare earth elements, and bulk geochemistry[J]. Chemical Geology, 284, 270-282. doi: 10.1016/j.chemgeo.2011.03.006
Yin A, Harrison T M. 2000. Geologic Evolution of the HimalayanTibetan Orogen[J]. Annual Reviews of Earth and Planetary Science, 28:211-280. doi: 10.1146/annurev.earth.28.1.211
Zhai Q G, Jahn B M, Su L, Wang J, Mo X X, Lee H Y, Wang K L, Tang S H. 2013. Triassic arc magmatism in the Qiangtang area, northern Tibet:Zircon U-Pb ages, geochemical and Sr-Nd-Hf isotopic characteristics, and tectonic Implications[J]. Journal of Asian Earth Sciences, 63:162-178. doi: 10.1016/j.jseaes.2012.08.025
Zhai Q G, Jahn B M, Zhang R Y, Wang J, Su L. 2011. Triassic subduction of the Paleo-Tethys in northern Tibet, China:evidence from the geochemical and isotopic characteristics of eclogites and blueschists of the Qiangtang Block[J]. Journal of Asian Earth Sciences, 42:1356-1370. doi: 10.1016/j.jseaes.2011.07.023
Zhang K J. 2001. Blueschist-bearing metamorphic core complexes in the Qiangtang block reveal deep crustal structure of northern Tibet:Comment and reply[J]. Geology, 29:90. doi: 10.1130/0091-7613(2001)029<0090:BBMCCI>2.0.CO;2
Zhang K J, Zhang Y X, Tang X C, Xia B. 2012. Late Mesozoic tectonic evolution and growth of the Tibetan plateau prior to the Indo-Asian collision[J]. Earth-Science Reviews, 114:236-249. doi: 10.1016/j.earscirev.2012.06.001
Zhang X Z, Dong Y S, Wang Q, Dan W, Zhang C F, Deng M R, Xu W, Xia X P, Zeng J P, Liang H. 2016. Carboniferous and Permian evolutionary records for the Paleo-Tethys Ocean constrained by newly discovered Xiangtaohu ophiolites from central Qiangtang, central Tibet[J]. Tectonics, 35:doi:10.1002/2016TC004170.
Zhou M F, Malpas J, Robinson P T, Reynolds P H. 1997. The dynamothermal aureole of the Donqiao ophiolite (northern Tibet)[J]. Canadian Journal of Earth Sciences, 34(1):59-65. doi: 10.1139/e17-005
Zhou Xiang. 1984. Tibet Plate Structure-construction and Specification[M]. Beijing:Geological Publishing House (in Chinese).
Zhu D C, Zhao Z D, Niu Y L, Dilek Y, Hou Z Q, Mo X X. 2013. The origin and pre-Cenozoic evolution of the Tibetan Plateau[J]. Gondwana Research, 23, 1429-1454. doi: 10.1016/j.gr.2012.02.002
冯兴雷, 付修根, 谭富文, 宋春彦, 陈文彬. 2016.北羌塘盆地沃若山地区早侏罗世雀莫错组砂岩地球化学特征与物源判别意义[J].中国地质, 43(4):1227-1237. http://geochina.cgs.gov.cn/ch/reader/view_abstract.aspx?file_no=20160409&flag=1
高春文, 贾庆军, 魏春光. 2006.羌塘盆地晚三叠世原型盆地性质探讨[J].地质论评, 52:198-206. doi: 10.3321/j.issn:0371-5736.2006.02.008
黄汲清, 陈炳蔚. 1987.中国及邻区特提斯海的演化[M].北京:地质出版社, 55-56.
李才, 程立人, 于介江, 张宝福, 翟庆国, 黄小鹏, 陈寿铭, 徐锋, 张以春. 2006. 中华人民共和国区域地质调查报告(1: 250000)-玛依岗日幅[R]. 12-66.
李才, 翟庆国, 陈文, 董永胜, 于介江. 2007.青藏高原龙木错-双湖板块缝合带闭合的年代学证据——来自果干加年上蛇绿岩与流纹岩Ar-Ar和SHRIMP年龄制约[J].岩石学报, 23(5):911-918. http://doi.wanfangdata.com.cn/10.3321/j.issn:1000-0569.2007.05.005
李勇, 王成善, 伊海生, 石和, 林金辉, 朱利东, 李祥辉. 2001.青藏高原中侏罗世-早白垩世羌塘复合型前陆盆地充填模式[J].沉积学报, 19 (1):20-27. http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=cjxb200101004
谭富文, 王剑, 李永铁, 杜佰伟, 朱忠发. 2004.羌塘盆地侏罗纪末-早白垩世沉积特征与地层问题[J].中国地质, 31(4):400-405. http://geochina.cgs.gov.cn/ch/reader/view_abstract.aspx?file_no=20040410&flag=1
王成善, 伊海生, 李勇. 2001.羌塘盆地地质演化与油气远景评价[M].北京:地质出版社, 184-251.
王剑, 丁俊, 王成善, 谭富文. 2009.青藏高原油气资源战略选区调查与评价[M].北京:地质出版社, 210-214.
王剑, 付修根, 陈文西, 汪正江. 2007藏北北羌塘盆地晚三叠世古风化壳地质地球化学特征及其意义[J].沉积学报, 25(4):487-494. https://www.wenkuxiazai.com/doc/2e5c416f1711cc7931b71665.html
王剑, 付修根, 谭富文, 陈明, 何江林. 2010.羌塘中生代(T3-K1)盆地演化新模式[J].沉积学报, 28(5):884-893. https://wenku.baidu.com/view/17c95356f01dc281e53af01d.html
王剑, 谭富文, 李亚林, 李永铁, 陈明, 王成善, 郭祖军, 王小龙, 杜佰伟, 朱忠发. 2004.青藏高原重点沉积盆地油气资源潜力分析[M].北京:地质出版社, 83-88.
周详. 1984.西藏板块构造-建造图及说明书[M].北京:地质出版社, 1-20.