收稿日期: 2004-04-09
修回日期: 2004-04-19
网络出版日期: 2004-06-01
THE CONTINENTAL DYNAMICS RELATED TO THE THERMALRHEOLOGICAL STRUCTURE OF THE LITHOSPHERE
Received date: 2004-04-09
Revised date: 2004-04-19
Online published: 2004-06-01
由于大陆内部存在上千公里宽的弥散边界变形带，板块构造理论用于解释新生代大陆内部的显著的构造变形遇到了困难。因此，探讨大陆岩石圈的构造变形机制、演化及动力学过程从而成为国际地球科学的热点研究领域---大陆动力学。大量的地震测深、地震层析成像技术的应用对岩石圈的精细结构研究，已揭示岩石圈结构和物质组成存在显著的横向非均质性。这种横向非均质性是地质时期内大陆岩石圈经历多期次构造-热事件叠加与改造所形成的。同时，也决定了岩石圈热-流变学结构的横向分块、纵向分层的特性。大陆岩石圈热-流变学结构非均质性及其构造继承性对大陆内部构造变形起控制作用。所以，大陆动力学应注重开展大陆变形的运动学、大陆岩石圈的热-流变学结构和大陆变形的地球动力学数值模拟研究。
韩用兵 , 钟锴 , 徐鸣洁 , 刘绍文 , 李华 , 李成 , 王良书 . 岩石圈热—流变结构与大陆动力学[J]. 地球科学进展, 2004 , 19(3) : 382 -386 . DOI: 10.11867/j.issn.1001-8166.2004.03.0382
The difficulty is met in the explanation of continental deformation in Cenozoic by means of plate tectonics model, due to the existence of obvious diffuse plate boundary deformation zones with over thousands kilometers wide inside continents. Which gives birth to the new frontier of international earth science communitiescontinental dynamics, focusing on the deformation mechanism, evolution and dynamic process of the continental lithosphere. Many geophysical techniques including Deep Seismic Souding and Seismic Tomogrpahy have been applied widely to reveal the fine structure of lithosphere, indicating the prominent lateral heterogeneities of structure and composition within continental lithosphere. The heterogeneity of continental lithosphere derived from episodic superimposition and alternation of tectonothermal events during its long geological history, then again induces the thermalrheological structure of lateral heterogeneity and vertical stratification. Here we propose that the heterogeneity of lithospheric thermalrheological structure and tectonic inheritance are the controlling factors for intracontinental deformation. Kinematics and geodynamic modeling of continental deformation, along with thermalrheological structure of the continental lithosphere are all emphasized here for study in future.
[1]Monlar P. Continental tectonics in the aftermath of plate tectonics[J]. Nature, 1988, 335: 131-137.
[2]Ranallio G, Donald C M. Rheological stratification of the lithosphere[J]. Tectonophysics, 1987, 132: 281-295
[3]Zhu Bingquan(朱炳泉), Chang Xiangyang(常向阳). Geochemical provinces and their boundaries[J]. Advance in Earth Sciences(地球科学进展), 2001，16（2）：153-162(in Chinese).
[4]Bird P. Continental delamination and the Colorado plateau[J]. Journal of Geophysics Research,1979, 84 (B13): 7 561-7 571.
[5]Davies J H, von Blanckenburg, F Slab breakoff. A model of lithosphere detachment and its test in the Magmatism and deformation of collisional orogens[J].Earth and Planetary Science Letters,1995,129: 85-102.
[6]Houseman G A, Molnar P. Gravitational (Rayleigh Taylor) instability of a layer with non-linear viscosity and convective thinning of continental lithosphere[J]. Journal of Geophysics Research, 1997, 28: 125-150.
[7]Tapponnier P, Peltzer G, Le Dain A Y, et al. Propagating extrusion tectonics in Asia: New insights from simple experiments with plasticine[J]. Geology, 1982, 10: 611-616.
[8]Thatcher W. GPS constraints on the kinematics of continental deformation[J]. International Geological Review, 2003, 45: 191-212.
[9]Tommasi A, Vauchez A. Continental scale rheological heterogeneities〖KG*2〗and complex intraplate tectono-metamorphic patterns: Insights from a casystudy and numerical models[J]. Tectonophysics, 1997, 279 (1~4): 327-350.
[10]England P C, McKenzie D P. A thin viscous sheet model for continental deoformation[J].Geophysics Journal of Royal Astronomical Society, 1982, 70: 295-321.
[11]Wang Q, Zhang P Z, Freymueller J T. Presentday crustal deformation in China constrained by Global Positioning System measurements[J]. Science, 2001, 294: 574-577.
[12]Wang Min(王敏), Shen Zhengkang(沈正康), Niu Zhijun(牛之俊), et al.Contemporary crustal〖KG*2〗deformation of the Chinese continent and tectonic block model[J]. Science in China(D)(中国科学D辑）, 2003, 46 (supp.):25-41（in Chinese).
[13]Deng Qidong(邓起东), Zhang Peizhen(张培震), Ran Yongkang(冉勇康), et al.Basic characteristics of active tectonics of China[J]. Science in China(D)(中国科学D辑）, 2002, 46(4):356372(in Chinese).
[14]Zhang Guomin(张国民), Wang Suyun(汪素云), Li Li(李丽), et al.Focal depth research of earthquake in mainland China: Implications for tectonics[J]. Chinese Science Bulletin(中国科学D辑）, 2002, 47(9): 663-668(in Chinese).
[15]Zhang Peizhen(张培震), Deng Qidong(邓起东), Zhang Guomin(张国民), et al.Active tectonic blocks and strong earthquakes in the continent of China[J].Science in China (D)(中国科学D辑）, 2003, 33(supp.):12-20(in Chinese).
[16]Forsyth D, Uyeda S. On the relative importance of the driving forces of plate motion[J]. Geophysical Journal of Royal Astronomical Society, 1975, 43: 163-200.
[17]Wernicke B, Snow J K . Cenozoic tectonism in the Central Basin and Range: Motion of the Sierran-Great Valley block[J]. International Geological Review, 1998, 40: 403-410.
[18]Flesch L M, Haines A J, Holt W E. Dynamics of the India-Eurasia collision zone[J]. Journal of Geophysics Research, 2001, 106(B8): 16 435-16 460
[19]Liu M, Yang Y, Extensional collapse of the Tibetan Plateau: Results of three-dimensional finite element modeling[J]. Journal of Geophysics Research, 2003, 108(8):2 361.
[20]Wang Liangshu(王良书), Li Cheng(李成), Liu Futian(刘福田), et al.Thermal-rheological structure of the lithosphere beneath two types of basins in eastern and western China[J]. Science in China(D)（中国科学D辑）, 2000, 30(supp.):116-121(in Chinese).
[21]Wang Liangshu(王良书), Liu Shaowen(刘绍文), Li Cheng(李成), et al.Constraints of the thermal-rheological structure of the lithosphere on Cenozoic deformation in eastern and western China[A]. In: Zhang Zhongjie(张中杰), Gao Rui(高锐), Lü Qingtian(吕庆田), et al, eds. Deep Structure and Dynamics of the Earth Interior in Continent of China-Celebrating Academician〖KG*2〗Teng Jiwen’s 50 Years Endeavoring in Geophysics[C].Beijing:Scientific Press, 2004, 522-533(in Chinese).
[22]Wang Qi(王琪), Ding Guoyu(丁国瑜), Qiao Xuejun(乔学军), et al.Recent rapid shortening of crust across Tianshan Mt. and relative motion of tectonic blocks in south and north[J]. Chinese Science Bulletin(科学通报), 2000, 45(14):1 543-1 547(in Chinese).
[23]Abdrakhmatov K Y, Aldazhanov S A, Hager B H, et al.Relatively recent construction of the Tien shan inferred from GPS measurements of present-day crustal deformation rates[J].Nature, 1996, 384: 450-453.
[24]England P, Molnar P. Active deformation of Asia: From kinematics to dynamics[J]. Science, 1997, 278: 647-650
[25]Dewey J F. Extensional collapse of orogens[J]. Tectonics, 1988, 1 123-1 139.
/
| 〈 |
|
〉 |
甘公网安备62010202000687
