青藏高原隆升机制新模式

李德威

青藏高原隆升机制新模式

李德威

中国地质大学地球科学学院, 湖北武汉 430074

基金项目:

中国地质调查局"1∶25万定结幅、陈塘区幅(国内部分) 区域地质调查"项目 20001300009231

详细信息

作者简介:
李德威(1962 -), 男, 博士, 教授, 博士生导师, 从事地质构造和深部构造的教学和研究.E-mail: dewei89@163.com

中图分类号: P542
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- 被引次数: 0
出版历程
- 收稿日期: 2003-05-15
- 刊出日期: 2003-11-25

A New Model for Uplifting Mechanism of Qinghai-Tibet Plateau

LI De-wei

Faculty of Earth Sciences, China University of Geosciences, Wuhan 430074, China

摘要

摘要: 作为创建大陆动力学理论体系的最佳野外实验室的青藏高原, 涉及当代固体地球科学前沿和热点的许多重大科学问题.迄今为止, 包括板块构造在内的众多模式不能合理地解释青藏高原重要的地质和地球物理现象.本文从下地壳与中上地壳、造山带与沉积盆地的耦合作用出发, 对青藏高原及邻区进行分尺度、分层块、分阶段的构造解析, 提出青藏高原隆升的下地壳层流构造模式, 认为青藏高原地壳增厚和构造隆升是晚新生代由于锡瓦利克盆地、塔里木盆地和四川盆地下地壳的热软化岩石大量流向青藏高原造成的.
- 隆升机制 /
- 下地壳 /
- 层流构造 /
- 大陆动力学 /
- 青藏高原
Abstract: The Qinghai-Tibet plateau, the best field laboratory for continental dynamics, involves many scientific problems in the frontiers and hotspots of modern earth sciences. Up to now, a lot of models including plate tectonics cannot rationally explain key geological and geophysical phenomena related formation and evolution of the plateau. According to a new idea involving coupling between the lower crust and upper crust, orogens and basins, this paper approaches the lower crust laminar tectonic model for uplifting mechanism of Qinghai-Tibet plateau by tectonic analysis of different scales, levels and blocks, multistage evolution. The crustal thicking and tectonic uplift of Qinghai-Tibet plateau result from the thermal softening rocks in the lower crust flow from the Himalayan foreland basin, Tarim basin and Sichuan basin to the plateau during Late Cenozoic era.
- uplifting mechanism /
- lower crust /
- laminar tectonics /
- continental dynamics /
- Qinghai-Tibet plateau

HTML全文

图 1 青藏高原构造略图

S₁.南昆仑蛇绿岩带; S₂.拉竹龙-金沙江蛇绿岩带; S₃.班公湖-怒江蛇绿岩带; S₄.雅鲁藏布江蛇绿岩; F₁.主边缘逆冲断层; F₂.Sagaing走滑断层; F₃.喀喇昆仑走滑断层; F₄.西昆仑走滑断层; F₅.帕米尔逆冲断层; F₆.西昆仑北缘逆冲断层; F₇.阿尔金走滑断层; F₈.柴南缘逆冲断层; F₉.柴北缘逆冲断层; F₁₀.祁连山逆冲断层; F₁₁.东昆仑走滑断层; F₁₂.龙门山逆冲断层; F₁₃.鲜水河-红河走滑断层

Fig. 1. Simplified tectonic map of Qinghai-Tibet plateau

下载: 全尺寸图片幻灯片

图 2 青藏高原震源深度^[12]

Fig. 2. Focal depth of Qinghai-Tibet plateau^[12]

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图 3 青藏高原与周边沉积盆地的耦合关系

F₁.主边缘逆冲断层; F₂.Chamam走滑断层; F₃.Sagaing走滑断层; F₄.喀喇昆仑走滑断层; F₅.西昆仑走滑断层; F₆.帕米尔逆冲断层; F₇.西昆仑北缘逆冲断层; F₈.阿尔金走滑断层; F₉.东昆仑走滑断层; F₁₀.柴南缘逆冲断层; F₁₁.柴北缘逆冲断层; F₁₂.祁连山逆冲断层; F₁₃.龙门山逆冲断层; F₁₄.鲜水河-红河走滑断层

Fig. 3. Coupling relationship between Qinghai-Tibet plateau and surrounding basins

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图 4 青藏高原隆升的层流构造模式

1.陆相碎屑岩; 2.磨拉石建造; 3.花岗岩; 4.蛇绿岩; 5.上地壳; 6.中地壳; 7.粘塑性下地壳; 8.部分熔融; 9.逆冲断层; 10.正断层和拆离断层; 11.下地壳层流方向

Fig. 4. Laminar tectonic model for uplift of Qinghai-Tibet plateau

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参考文献(36)

[1]	Burchfiel B C, Chen Z L, Hodges K V, et al. The south Tibetan detachment system, Himalayan orogen: Extension contemporaneous with and parallel to shortening in a collisional mountain belt[J]. Geological Society of America, Special Paper, 1992, 269: 1-51.
[2]	李德威. 喜马拉雅造山带的构造不对称演化[J]. 地球科学——中国地质大学学报, 1992, 17(5): 539-545. https://www.cnki.com.cn/Article/CJFDTOTAL-DQKX199205008.htm LI D W. On tectonic asymmetrical evolution of the Himalayan orogenic belt[J]. Earth Science-Journal of China University of Geosciences, 1992, 17(5): 539-545. https://www.cnki.com.cn/Article/CJFDTOTAL-DQKX199205008.htm
[3]	Yin A, Kapp P A, Murphy M A, et al. Significant Late Neogene east-west extension in northern Tibet[J]. Geology, 1999, 27: 787-790.
[4]	Pan Y, Kidd W S F. Nyainqentanghla shear zone: A Late Miocene extensional detachment in the southern Tibetan plateau [J]. Geology, 1992, 20: 775-778.
[5]	Pognante U, Spencer D A. First record of eclogite from the Himalayan belt, Kaghan valley, northern Pakistan[J]. Eur J Mineral, 1991, 3: 613-618. doi: 10.1127/ejm/3/3/0613
[6]	Zhong D, Ding L. Discovery of high pressure basic granulites in Namjagbarwa area, Tibet, China[J]. China Sci Bull, 1996, 41: 87-88.
[7]	杨经绥, 许志琴, 李海兵, 等. 我国西部柴北缘地区发现榴辉岩[J]. 科学通报, 1998, 43(14): 1544-1548. doi: 10.3321/j.issn:0023-074X.1998.14.023 YANG J S, XU Z Q, LI H B, et al. Discovery of eclogite at northern margin of Qaidam basin, NW China[J]. Chinese Science Bulletin, 1998, 43(14): 1544-1548. doi: 10.3321/j.issn:0023-074X.1998.14.023
[8]	李德威, 廖群安, 袁晏明, 等. 喜马拉雅造山带中段核部杂岩中基性麻粒岩的发现及其构造意义[J]. 地球科学——中国地质大学学报, 2002, 27(1): 80, 96. https://www.cnki.com.cn/Article/CJFDTOTAL-DQKX200201016.htm LI D W, LIAO Q A, YUAN YM, et al. Discovery and significance of basic granulites in the complexes in the middle Himalaya[J]. Earth Science-Journal of China University of Geosciences, 2002, 27(1): 80, 96. https://www.cnki.com.cn/Article/CJFDTOTAL-DQKX200201016.htm
[9]	肖序常, 李廷栋, 李光岑, 等. 喜马拉雅岩石圈构造演化总论[M]. 北京: 地质出版社, 1998.1-236. XIAO X C, LI T D, LI G C, et al. Tectonic evolution of the lithosphere of the Himalaya: General principle[M]. Bejing: Geological Publishing House, 1998.1-236.
[10]	潘裕生, 孔祥儒. 青藏高原岩石圈结构演化和动力学[M]. 广州: 广东科技出版社, 1998.1-426. PAN Y S, KONG X R. Lithosphere structure, evolution and dynamics of Qinghai-Xizang (Tibetan) plateau[M]. Guangzhou: Guangdong Science and Technology Press, 1998. 1-426.
[11]	Zhao W, Nelson K D, Project INDEPTH Team. Deep seismic reflection evidence for continental underthrusting beneath southern Tibet[J]. Nature, 1993, 366: 557-559. doi: 10.1038/366557a0
[12]	崔作舟, 尹周勋, 高恩元, 等. 青藏高原速度结构和深部构造[M]. 北京: 地质出版社, 1992.1-112. CUI Z Z, YIN Z X, GAO E Y, et al. Velocity structure and deep-seated structure of the Qinghai-Xizang (Tibet) plateau [M]. Bejing: Geological Publishing House, 1992.1-112.
[13]	张胜业, 魏胜, 王家映, 等. 西藏羌塘盆地大地电磁测深研究[J]. 地球科学——中国地质大学学报, 1996, 21 (2): 198-203. https://www.cnki.com.cn/Article/CJFDTOTAL-DQKX199602018.htm ZHANG S Y, WEI S, WANG J Y, et al. Magnetotelluric sounding in the Qiangtang basin of Xizang (Tibet)[J]. Earth Science-Journal of China University of Geosciences, 1996, 21(2): 198-203. https://www.cnki.com.cn/Article/CJFDTOTAL-DQKX199602018.htm
[14]	Li D W, Wang J Y, Furlong K P. Crustal structure of Qiangtang terrane in the central Tibetan plateau[D]. AGU, 1998. 79(F795).
[15]	Wei W B, Martyn U, Alan J, et al. Detection of widespread fluids in the Tibetan crust by magnetotelluric studies[J]. Science, 2001, 292: 716-718. doi: 10.1126/science.1010580
[16]	Wu G, Xiao X, Li T, et al. Lithospheric structure and evolution of the Tibetan plateau: The Yadong-Golmud geoscience transect[J]. Tectonophysics, 1993, 219: 213-221. doi: 10.1016/0040-1951(93)90297-W
[17]	Owens T J, Zandt G. Implications of crustal property variations for models of Tibetan plateau evolution[J]. Nature, 1997, 387: 37-42. doi: 10.1038/387037a0
[18]	张建新, 张泽民, 许志琴, 等. 阿尔金构造带西段榴辉岩的Sm-Nd和U-Pb年龄[J]. 科学通报, 1999, 44(10): 1109-1112. doi: 10.3321/j.issn:0023-074X.1999.10.021 ZHANG J X, ZHANG Z M, XU Z Q, et al. Sm-Nd and U-Pb ages of eclogites in the western Altun[J]. Chinese Science Bulletin, 1999, 44(10): 1109-1112. doi: 10.3321/j.issn:0023-074X.1999.10.021
[19]	殷鸿福, 张克信. 东昆仑造山带的一些特点[J]. 地球科学——中国地质大学学报, 1997, 22(4): 339-342. https://www.cnki.com.cn/Article/CJFDTOTAL-DQKX704.000.htm YIN H F, ZHANG K X. Characteristics of the eastern Kunlun orogenic belt[J]. Earth Science-Journal of China University of Geosciences, 1997, 22(4): 339-342. https://www.cnki.com.cn/Article/CJFDTOTAL-DQKX704.000.htm
[20]	De Sigoyer J, Chavagnac V, Toft J, et al. Dating the Indian continental subduction and collisional thickening in the northwest Himalaya: Multichronology of the Tso Morari eclogites [J]. Geology, 2000, 28: 487-490.
[21]	Ding L, Zhong D L, Yin A, et al. Cenozoic structural and metamorphic evolution of the eastern Himalayan syntaxis (Namche Barwa)[J]. Earth and Planetary Science Letters, 2001, 192: 423-438. doi: 10.1016/S0012-821X(01)00463-0
[22]	李德威, 廖群安, 袁晏明, 等. 喜马拉雅造山带中段日玛那麻粒岩锆石U-Pb年代学[J]. 科学通报, 2003, 待刊. LI D W, LIAO Q A, YUAN Y M, et al. U-Pb zircon ages of Rimana granulites in the middle Himalaya[J]. Chinese Sci Bull, 2003, (in press).
[23]	Harrison T M, Copeland P, Kidd W S F, et al. Raising Tibet [J]. Science, 1992, 255: 1663-1670. doi: 10.1126/science.255.5052.1663
[24]	肖序常, 王军. 青藏高原构造演化及隆升的简要评述[J]. 地质论评, 1998, 44(4): 372-381. doi: 10.3321/j.issn:0371-5736.1998.04.006 XIAO X C, WANG J. A brief review of tectonic evolution and uplift of the Qinghai-Tibet plateau[J]. Geological Review, 1998, 44(4): 372-381. doi: 10.3321/j.issn:0371-5736.1998.04.006
[25]	Schelling D. The tectonostratigraphy and structure of the eastern Nepal Himalaya[J]. Tectonics, 1992, 11: 925-943. doi: 10.1029/92TC00213
[26]	Meigs A J, Burbank D W, Bec R A. Middle-Late Miocene (>10 Ma) formation of the Main Boundar thrust in the western Himalaya[J]. Geology, 1995, 23: 423-426.
[27]	Pivnik D A, Johnson D G. Depositional response to PliocenePleistocene foreland partitioning in northwest Pakistan[J]. GSA Bulletin, 1995, 107: 895-922. doi: 10.1130/0016-7606(1995)107<0895:DRTPPF>2.3.CO;2
[28]	李德威, 刘德民, 廖群安, 等. 藏南萨迦拉轨岗日变质核杂岩的厘定及其成因[J]. 地质通报, 2003, 22(5): 7-11. https://www.cnki.com.cn/Article/CJFDTOTAL-ZQYD200305001.htm LI D W, LIU D M, LIAO Q A, et al. Definition and significance of the Lhagoi Kangri metamorphic core complexes in Sagya, southern Tibet[J]. Geological Bulletin of China, 2003, 22(5): 7-11. https://www.cnki.com.cn/Article/CJFDTOTAL-ZQYD200305001.htm
[29]	Tapponnier P, Molnar P. Slip-line field theory and large scale continental tectonics[J]. Nature, 1976, 294: 319-324.
[30]	Armio R, Tapponnier P, Han T. Late Cenozoic right-lateral strike-slip faulting in southern Tibet[J]. J Geophys Res, 1989, 94: 2787-2838. doi: 10.1029/JB094iB03p02787
[31]	崔军文, 唐哲民, 邓晋福, 等. 阿尔金断裂系[M]. 北京: 地质出版社, 1999.1-249. CUI J W, TANG Z M, DENG J F, et al. Altun fault system [M]. Bejing: Geological Publishing House, 1999.1-249.
[32]	马润则, 刘登忠, 陶晓风, 等. 西藏措勒地区发现第三纪富钾岩浆岩[J]. 地质通报, 2002, 21(11): 728-731. doi: 10.3969/j.issn.1671-2552.2002.11.006 MA R Z, LIU D Z, TAO X F, et al. Discovery of Tertiary potassium-rich magmatic rocks in the Coqen area, Tibet[J]. Geological Bulletin of China, 2002, 21(11): 728-731. doi: 10.3969/j.issn.1671-2552.2002.11.006
[33]	邓万明. 青藏高原北部新生代板内火山岩[M]. 北京: 地质出版社, 1998.1-180. DENG W M. Cenozoic intraplate volcanic rocks in the northern Qinghai-Xizang plateau[M]. Bejing: Geological Publishing House, 1998.1-180.
[34]	李德威. 大陆构造样式及大陆动力学模式初探[J]. 地球科学进展, 1993, 8(5): 88-93. https://www.cnki.com.cn/Article/CJFDTOTAL-DXJZ199305010.htm LI D W. The style of continental structure and model of continental dynamics[J]. Advance in Earth Sciences, 1993, 8 (5): 88-93. https://www.cnki.com.cn/Article/CJFDTOTAL-DXJZ199305010.htm
[35]	李德威. 再论大陆构造与动力学[J]. 地球科学——中国地质大学学报, 1995, 20(1): 19-26. https://www.cnki.com.cn/Article/CJFDTOTAL-DQKX501.002.htm LI D W. On continental tectonics and its dynamics[J]. Earth Science-Journal of China University of Geosciences, 1995, 20(1): 19-26. https://www.cnki.com.cn/Article/CJFDTOTAL-DQKX501.002.htm
[36]	李德威, 纪云龙. 大陆下地壳层流作用及其大陆动力学意义[J]. 地震地质, 2000, 22(1): 89-96. doi: 10.3969/j.issn.0253-4967.2000.01.012 LI D W, JI Y L. Laminar flow in the lower continental crust and its significance for continental dynamics[J]. Seismology and Geology, 2000, 22(1): 89-96. doi: 10.3969/j.issn.0253-4967.2000.01.012