大别山造山带前陆深地震反射剖面
摘要
在大别山南部和扬子地块前陆实施的深地震反射剖面(140 km)揭示出大别山造山带前陆地壳的精细结构。总体北倾的地壳内部结构与向北缓倾的叠瓦状莫霍面反射揭示出扬子陆块向北俯冲的行迹。莫霍面向北插入大别山造山带下与南大别山地壳内南倾反射震相叠置,构成交叉反射图像,刻画出扬子前陆与大别山造山带的碰撞构造面貌。
A 140km seismic reflection profile across the southern Dabie orogen and the Yangtze foreland reveals the detailed structures of the crust beneath the region. The generally north-depping crustal structures and the gently north-dipping Moho interface with several imbricate segment are referred to as the traces of a northward underthrusting of the Yangtze block. The Moho that underthrusts beneath the Dabie orogen and the south-dipping reflections of southern Dabie create a crossed reflection image, depicting the collisional structure beneath the collision of the Yangtze foreland and Dabie orogen.
A 140km seismic reflection profile across the southern Dabie orogen and the Yangtze foreland reveals the detailed structures of the crust beneath the region. The generally north-depping crustal structures and the gently north-dipping Moho interface with several imbricate segment are referred to as the traces of a northward underthrusting of the Yangtze block. The Moho that underthrusts beneath the Dabie orogen and the south-dipping reflections of southern Dabie create a crossed reflection image, depicting the collisional structure beneath the collision of the Yangtze foreland and Dabie orogen.
引文
董树文,孙先如,张永,等．1993．大别山造山带基本结构．科学通 报,36(6):542-445．
董树文,吴宣志,高锐,等．1 997．大别山造山带深部地质探讨．中国 地质,(1):32-37．
董树文,吴宣志,高锐,等．1998．大别山造山带地壳速度结构与动 力学．地球物理学报,41(3):349-361．
高锐,董树文,贺日政,等,2004．莫霍面反射图像揭露出扬子陆块深 俯冲过程,地学前缘,11(3):43-49．
王椿镛,张先康,陈步云,等．1997a．大别山造山带的地壳结构研究． 中国科学(D辑),27:221-226．
王椿镛,丁志峰,宋建立,等．1997b．大别山造山带的S波地壳速度 结构．地球物理学报,40(3):337-345．
徐佩芬,孙若昧,刘福田,等．1999．扬子板块俯冲、断离的地震层析 成像证据．科学通报,44(15):1658-1661．
Cong B, Wang Q, Zhai M, et al. 1994. UHP metamorphic rocks in the Dabie-Su-Lu region, China: Their formation and exhumation. Island Arc, 3:135-150.
Cong Bolin. 1996. Ultrahigh-pressure Metamorphism Rocks in the Dabieshan-Sulu Region of China. Beijing: Science Press & Kluwer Academic Publishers.
Dong S W, Wu X, Gao R, et al. 1996. Preliminary study on deep geology of the Dabie orogenic belt. Continental Danamics, 1(2) : 103-108.
Dong S W, Chen J, Huang D. 1998. Differential exhumation of tectonic units and ultrahigh-pressure metamorphic rocks in the Dabie Mountains, China. The Island Arc, 7:174-183.
Dong S W, Wu H L, Liu X C, Xue H M. 2002a. On continent-continent point -collision and ultrahigh-pressure metamophism. Acta Geologica Sinica (English Edition), 76(1);69-80.
Dong S W, Gao R, Cong B, et al. 2002b. Crustal structure of southern Dabieshan and Yangtze foreland interpreted from the seismic reflection profiling. Proceedings for International UHPM Workshop. Beijing, 171-174.
Dong S W, Gao R, Cong B L, et al. 2004. Crustal structure of southern Dabie ultrahigh-pressure orogen and Yangtze foreland from deep seismic reflection profile, Terra Nova, 16, 319-324.
Ernst W G. 1988. Tectonic history of subduction zones inferred from retrograde blueschist P-T paths. Geology, 16: 1081-1084.
Ernst W G, Zhou G, Liou J G, et al. 1991. High-pressure and superhigh-pressure metamorphic terranes in the Qinling-Dabie Mountain belts, central China early- to mid-Phanerozoic accretion of the western paleo-Pacific rim. Pacific Sci. Assoc. Information Bull. , 43: 6-15.
Gilder S, Courtillot V. 1997. Timing of North-South China collision from new Middle to late Mesozoic paleomagnetic data from the North China Block. J. Geophys. Res., 102: 17713-17727.
Hacker B, Ratschbacher L, Webb L, McWilliams M, Ireland T, Calvert A, Dong S, Wenk H-R, Chateigner D. 2000. Exhumation of ultrahigh-pressure continental crust in east central China: Late Triassic-Early Jurassic tectonic unroofing. J. Geophys. Res. , 105: 13339-13364.
Lin J, Fuller M, Zhang W. 1985. Preliminary phanerozoic polar wander paths for the North and South China blocks. Nature, 313: 444 - 449.
Maruyama S, Liou J G, Zhang R Y. 1994. Tectonic evolution of the ultrahigh-pressure (UHP) and high-pressure (HP) metamorphic belts from central China. The Island Arc, 3:112 - 121.
Schmid R, Ryberg T, Ratschbacher L, et al. 2001. Crustal structure of the eastern Dabie Shan interpreted from deep reflection and shallow tomographic data. Tectonophsics, 333: 347 - 359.
Schulze A, Jiang M, Ryberg T. 1998. Survey yields data on unique metamorphic rock complex in China. EOS, Transaction. Am. Peophys. Union, 79: 429 - 433.
Wang C Y, Zeng R, Mooney W, et al. 2000. A erustal model of the ultrahigh-pressure Dabie Shan orogenic belt, China, derived from deep seismic refraction profiling. J. Geophys. Res., 105:10857 -10869.
Wang Q, Cong B, Zhu R. 1998. Geodynamics of UHP-rock-bearing continental collision zone in central China. In: Mantle Dynamics and Plate Interactions in East Asia. Am. Geophys. Union, 259 -267.
Xu P, Liu F, Wang Q, Cong B, Chen H. 2001. Slab-like high velocity nomaly in the uppermost mantle beneath the Dabie-Sulu orogen. Geophys. Res. Lett. , 28: 1847 - 1850.
Yang Z Y, Courtillot V, Besse J, et al. 1992. Jurassic paleomagnetic constrains on the collision of the North and South China Block. Geophys. Res. Lett. , 19: 577 - 580.
Yuan X C, Klemperer S L, Teng W B, et al. 2003. Crustal structure and exhumation of the Dabie Shan ultrahigh-pressure orogen, eastern China, from seismic reflection profiling. Geology,31(5) : 435-438.
Zhao X, Coe R S. 1987. Paleomagnetic constrain on the collision and rotation of north and south China. Nature, 327: 141 - 144.
董树文,吴宣志,高锐,等．1 997．大别山造山带深部地质探讨．中国 地质,(1):32-37．
董树文,吴宣志,高锐,等．1998．大别山造山带地壳速度结构与动 力学．地球物理学报,41(3):349-361．
高锐,董树文,贺日政,等,2004．莫霍面反射图像揭露出扬子陆块深 俯冲过程,地学前缘,11(3):43-49．
王椿镛,张先康,陈步云,等．1997a．大别山造山带的地壳结构研究． 中国科学(D辑),27:221-226．
王椿镛,丁志峰,宋建立,等．1997b．大别山造山带的S波地壳速度 结构．地球物理学报,40(3):337-345．
徐佩芬,孙若昧,刘福田,等．1999．扬子板块俯冲、断离的地震层析 成像证据．科学通报,44(15):1658-1661．
Cong B, Wang Q, Zhai M, et al. 1994. UHP metamorphic rocks in the Dabie-Su-Lu region, China: Their formation and exhumation. Island Arc, 3:135-150.
Cong Bolin. 1996. Ultrahigh-pressure Metamorphism Rocks in the Dabieshan-Sulu Region of China. Beijing: Science Press & Kluwer Academic Publishers.
Dong S W, Wu X, Gao R, et al. 1996. Preliminary study on deep geology of the Dabie orogenic belt. Continental Danamics, 1(2) : 103-108.
Dong S W, Chen J, Huang D. 1998. Differential exhumation of tectonic units and ultrahigh-pressure metamorphic rocks in the Dabie Mountains, China. The Island Arc, 7:174-183.
Dong S W, Wu H L, Liu X C, Xue H M. 2002a. On continent-continent point -collision and ultrahigh-pressure metamophism. Acta Geologica Sinica (English Edition), 76(1);69-80.
Dong S W, Gao R, Cong B, et al. 2002b. Crustal structure of southern Dabieshan and Yangtze foreland interpreted from the seismic reflection profiling. Proceedings for International UHPM Workshop. Beijing, 171-174.
Dong S W, Gao R, Cong B L, et al. 2004. Crustal structure of southern Dabie ultrahigh-pressure orogen and Yangtze foreland from deep seismic reflection profile, Terra Nova, 16, 319-324.
Ernst W G. 1988. Tectonic history of subduction zones inferred from retrograde blueschist P-T paths. Geology, 16: 1081-1084.
Ernst W G, Zhou G, Liou J G, et al. 1991. High-pressure and superhigh-pressure metamorphic terranes in the Qinling-Dabie Mountain belts, central China early- to mid-Phanerozoic accretion of the western paleo-Pacific rim. Pacific Sci. Assoc. Information Bull. , 43: 6-15.
Gilder S, Courtillot V. 1997. Timing of North-South China collision from new Middle to late Mesozoic paleomagnetic data from the North China Block. J. Geophys. Res., 102: 17713-17727.
Hacker B, Ratschbacher L, Webb L, McWilliams M, Ireland T, Calvert A, Dong S, Wenk H-R, Chateigner D. 2000. Exhumation of ultrahigh-pressure continental crust in east central China: Late Triassic-Early Jurassic tectonic unroofing. J. Geophys. Res. , 105: 13339-13364.
Lin J, Fuller M, Zhang W. 1985. Preliminary phanerozoic polar wander paths for the North and South China blocks. Nature, 313: 444 - 449.
Maruyama S, Liou J G, Zhang R Y. 1994. Tectonic evolution of the ultrahigh-pressure (UHP) and high-pressure (HP) metamorphic belts from central China. The Island Arc, 3:112 - 121.
Schmid R, Ryberg T, Ratschbacher L, et al. 2001. Crustal structure of the eastern Dabie Shan interpreted from deep reflection and shallow tomographic data. Tectonophsics, 333: 347 - 359.
Schulze A, Jiang M, Ryberg T. 1998. Survey yields data on unique metamorphic rock complex in China. EOS, Transaction. Am. Peophys. Union, 79: 429 - 433.
Wang C Y, Zeng R, Mooney W, et al. 2000. A erustal model of the ultrahigh-pressure Dabie Shan orogenic belt, China, derived from deep seismic refraction profiling. J. Geophys. Res., 105:10857 -10869.
Wang Q, Cong B, Zhu R. 1998. Geodynamics of UHP-rock-bearing continental collision zone in central China. In: Mantle Dynamics and Plate Interactions in East Asia. Am. Geophys. Union, 259 -267.
Xu P, Liu F, Wang Q, Cong B, Chen H. 2001. Slab-like high velocity nomaly in the uppermost mantle beneath the Dabie-Sulu orogen. Geophys. Res. Lett. , 28: 1847 - 1850.
Yang Z Y, Courtillot V, Besse J, et al. 1992. Jurassic paleomagnetic constrains on the collision of the North and South China Block. Geophys. Res. Lett. , 19: 577 - 580.
Yuan X C, Klemperer S L, Teng W B, et al. 2003. Crustal structure and exhumation of the Dabie Shan ultrahigh-pressure orogen, eastern China, from seismic reflection profiling. Geology,31(5) : 435-438.
Zhao X, Coe R S. 1987. Paleomagnetic constrain on the collision and rotation of north and south China. Nature, 327: 141 - 144.
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