| Citation: | Shutian Suo, Zengqiu Zhong, Hanwen Zhou, Zhendong You. Triassic Collisional Structures and Post-Collisional Deformation of Bixiling UHP Rock Stack: Insights for Tectonic Evolution of UHP Metamorphic Belt in Dabie Massif，Central China. Journal of Earth Science, 2002, 13(1): 1-13.
|
Detailed three-dimensional structural studies indicate that the Bixiling area, Dabie massif, central China shows the deepest exposed levels of the orogenic wedge formed during the Triassic Yangtze-Sino-Korean continental collision, New 1 : 10000 scale structural mapping, combined with detailed petrological analysis in this area, has enabled us to accurately distinguish structures related to the Triassic continental collision from those related to post-collisional deformation in the ultrahigh pressure(UHP)metamorphic unit.The collisional or compressional structures include the massive eclogite with a weak foliation, foliated eclogite or UHP ductile shear zones, as well as upper amphibolite facies shear zones, whereas the post-collisional deformation is characterized by a regionally, flat-lying foliation containing stretching lineations and common reclined folds. The former is present exclusively in the eclogite lenses and their margins, representing orogenic thickening or syn-collisional events, while the latter was best occurred on varilable scales under amphibolite facies conditions, showing sub-verticai, extreme shortening and ductile thinning of the metamorphic rock stack, The eclogite facies tectonites that have a marked fabric discordance to the penetrative amphibolife facies extension flow fabric are common.It is emphasized that an extensional tectonic setting following the collision-orogenic thickening stage was, at least partly, responsible for exhumation of the UHP metamorphic rocks in the Dabie massif. A new tectonlc evolution model is proposed for the UHP metamorphic belt on the scale of the Dabie massif.The Bixiling area thus provides a window, from which the dynamic processes concerning the formation and exhumation of the UHP rocks can be observed.Regional studies in the Dabie Mountains have confirmed this interpretation.
| Abalos B, 1997. Omphacite Fabric Variation in the Cabo Ortegal Eclogite (Nw Spain); Relationships with Strain Symmetry during High-Pressure Deformation. J Struct Geol, 19: 621-637 doi: 10.1016/S0191-8141(97)00001-1 |
| Ames L, Tilton G R. Zhou G, 1993. Timing of Collision of the Sino-Korean and Yangtze Cratons : U-Pb Dating of Coesite-Bearing Eclogites. Geology, 21: 339-342 |
| Ames L, Zhou G, Xiong B, 1996. Geochronology and lsotopic Character of Ultrahigh-Pressure Metamorphism with Implications for Collision of the Sino-Korean and Yangtze Cratons, Central China. Tectonics, 15: 472-489 doi: 10.1029/95TC02552 |
| Bell T H, 1985, Deformation Partitioning and Porphyroblast Rotation in Metamorphic Rocks: A Radical Reinterpretation. J Metamorphic Geol, 3: 106-118 |
| Cheng Y, Liu D, Williams I S. et al, 2000. SHRIMP U-Pb Dating of Zircons of a Dark-Coloured Eclogite and a Garnet-Bearing Gneissic-Granitic Rock from Bixiling, EasternDabie Area—Isotope Chronological Evidence of Neoprot-erozoic HP-UHP Metamorphism. Acta Geologica Sinica, 74: 748-765 |
| Carswell D A, 1986. The Metamorphic Evolution of Mg-Cr Type Norwegian Garnet. Lithos, 19: 279-297 doi: 10.1016/0024-4937(86)90028-9 |
| Carswell D A, O'brien P J. Wilson R N. et al, 1997. Thermobarometry of Phengite-Bearing Eclogites in the Dabie Mountains of Central China. Journal of Metamorphic Geology, 15: 239-252 doi: 10.1111/j.1525-1314.1997.00014.x |
| Chavagnac V, Jahn B M. 1996. Coesite-Bearing Eclogites from the Bixiling Complex, Dabie Mountains, China; Sn-Nd Ages, Geochemical Characteristics and Tectonic Implications. Chemical Geology, 133: 29-51 |
| Chemenda A I, Mattauer M, Bokun A N, 1996. Continental Subduction and a Mechanism for Exhumation of High-Pressure Metarmorphic Rocks: New Modeling and Field Data from Oman. Earth Planet Sci Lett, 143: 173-182 |
| Cong B, Wang Q, Zhai M, et al, 1994. Ultrahigh-Pressure Metamorphic Rocks in the Dabie-Su-Lu Region, China : Their Formation and Exhurnation. The Island Arc, 3: 135-150 |
| Cong B, Zhai M, Dennis A, et al, 1995. Petrogenesis of Ultra-high-Pressure Rocks and Their Country Rocks at Shuanghe in Dabieshan. Central China. Eur J Mineral, 7: 119-138 doi: 10.1127/ejm/7/1/0119 |
| Eide E A, McWilliams M O, Liou J G, 1994. 40Ar/39Ar Geochronology and Exhurnation of High-Pressure of Ultra-high-Pressure Metamorphic Rocks in East-Central China. Geology, 22: 601-604 |
| Ernst W G. Liou J G, 1999, Overview of UHP Metamorphism and Tectonics in Well-Studied Collisional Orogens. International Geology Review, 41: 477-493 doi: 10.1080/00206819909465153 |
| Faure M, Lin W, Shu L, et al, 1999. Tectonics of the Dabieshan (Eastern China) and Possible Exhumation Mechanism of Uitra High-Pressure Rocks. Terra Nova, 11: 251-258 doi: 10.1046/j.1365-3121.1999.00257.x |
| Handy M R, 1990. The Solid-State Flow of Polymineralic Rocks. J Geophys Res, 95: 8647-8661 doi: 10.1029/JB095iB06p08647 |
| Hacker B R, Wang X. Eide E A. et al, 1996. The Qinling-Dabie Ultrahigh-Pressure Collisional Orogen. In: Yin A, Harrision M T, eds. Rubey Volume Ⅷ, Tectonic Developrnent of Asia. Cambridge: Cambridge University Press. 345-370 |
| Hacker B R, Ratschbacher L, Webb L, et al, 1998. U/Pb Zircon Ages Constrain the Architecture of the Ultrahigh-Pressure Qinling-Dabie Orogen, China. Earth Planet Sci Lett, 161: 215-230 doi: 10.1016/S0012-821X(98)00152-6 |
| Hacker B R, Ratschbacher L, Webb M, et al, 2000. Exhunation of the Ultrahigh-Pressure Continental Crust in East Central China: Late Triassic-Early Jurassic Tectonic Unroofing. J Geophys Res, 105(13): 339-364 |
| Jiao S. Jin Z, Jin S, et al, 1999. Fabric and Deformation of Ormphacite in Dabie Ultra-high-Pressure Eclogites. Acta Geologica Sinica, 73: 4111-417 |
| Li S, Xiao Y, Liu D, et al, 1993. Collision of the North China and Yangtze Block and Formation of Coesite-Bearing Eclogites: Timing and Processes. Chemical Geology. 109: 89-111 doi: 10.1016/0009-2541(93)90063-O |
| Li S, Jagoutz E, Chen Y, et al, 2000. Sm-Nd and Rb-Sr Isotopic Chronology and Cooling Hisrory of Ultrahigh Pressure Metamorphic Rocks and Their Country Rocks at Shuanghe in the Dabie Mountains, Central China. Geochimica et Cosmochimica Acta, 64: 1077-1093 doi: 10.1016/S0016-7037(99)00319-1 |
| Liou J G, Zhang R Y. wang x, et al, 1996. Metamorphism and Tectonics of High-Pressure and Ultra-high-Pressure Belts in the Dabie-Sulu Region, China. In: Yin A, Harrison M T, eds. Rubey VolumeⅧ, Tectonic Development of Asia. Cambridge: Cambridge University Press. 300-344 |
| Liou J G, Zhang R Y, Jahn B M, 1997. Petrology, Geochemistry and Isotope Data on an Ultrahigh-Pressure Jadeite Quartzite from Shuanghe, Dabie Mountains, East-Central China. Lithos, 41: 59-78 doi: 10.1016/S0024-4937(97)82005-1 |
| 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 doi: 10.1111/j.1440-1738.1994.tb00099.x |
| Okay A L, Xu S T, Sengor A M C, 1989. Coesite from the Dabie Shan Eclogites, Central China. Eur J Mineral, 1: 595-598 doi: 10.1127/ejm/1/4/0595 |
| Okay A I, Sengor A M C, Satir M, 1993. Tectonics of an U1trahigh-Pressure Metamorphic Terrane: The Dabie/Tongbai Shan Orogen. China. Tectonics, 12: 1320-1334 doi: 10.1029/93TC01544 |
| Rowley D B. Xue F, Tucker R D, et al, 1997, Ages of Ultrahigh Pressure Metarnorphism and Protolith Orthogneisses from the Eastern Dabie Shan: U/Pb Zirzon Geochronology. Earth Planet Sci Lett, 151: 1991-203 |
| Ratschbacher L, Hacker B R, Webb L E. 2000. Exhurmation of the Ultrahigh-Pressure Continental Crust in East Centrai China: Cretaceous and Cenozoic Unroofing and theTan-Lu Fault. J Geophys Res, 105(13): 303-338 |
| Schmid R. Franz L, Oberhansli R, et al, 2000. High-Si Phengite, Mineral Chemistry and p-t Evolution of Ultra-High-Pressure Eclogites and Calc-Silicates from the Dabie Shan, Eastern China. Geol J, 35: 185-207 doi: 10.1002/gj.863 |
| Schmid R, Ryberg T, Ratschbacher L, et al. 2001. Crustal Structure of the Eastern Dabie Shan Interpreted from Deep Reflection and Shallow Tomographic Data. Tectonophysics, 333: 347-359 doi: 10.1016/S0040-1951(01)00023-3 |
| Suo s, Sang L, Han Y, et al, 1993. The Petrology and Tectonics in Dabie Precanbrian Terranes, Central China. Wuhan: China University of Geosciences Press (in Chinese with English Abstract) |
| Suo s, Zhong Z. 1999. Multi-Layered Low-Angle Ductile Detachment System in Dabie-Sulu UHPM and HPM Belts. Journal of China University of Geosciences, 10: 187-193 |
| Suo s, Zhong Z, You z, 2000. Extensional Deformation of Post Ultrahigh-Pressure Metamorphisn and Exhumation Process of Ultrahigh-Pressure Metamorphic Rocks in the Dabie Massif, China. Science in China (Series D), 43: 225-236 |
| Suo s. Zhong Z, You Z, et al, 2001a. Post-Collisional Ductile Extensional Tectonic Framework in the UHP and HP Metamorphic Belts in the Dabie-Sulu Region, China. Acta Geologica Sinica, 75: 151-160 |
| Suo S, Zhong Z, Zhou H, et al, 2001b. Structural Analysis of UHP Metamorphic Rocks in the Bixiling Area, Dabie Mountains, China. Earth Science Frontiers, 8: 385-394(in Chinese with English Abstract) |
| Wang X. Liou J G. Mao H K, 1989. Coesite-Bearing Eclogites frorm the Dabie Mountains in Central China. Geology. 17: 1085-1088 |
| Wang Q. Liu X, Maruyama S. et al, 1995. Top Boundary of the Dabie UHPM Rocks, Central China. Journal of Southeast Asian Earth Sciences, 11: 295-300 doi: 10.1016/0743-9547(94)00035-D |
| Xu S, Okay A I. Ji S, et al, 1992. Diamond from the Dabie Shan Metamorphic Rocks and Its Implication for Tectonic Setting. Science, 256: 80-82 doi: 10.1126/science.256.5053.80 |
| Xiao Y. Li S. Jagoutz E, et al. 1995. P-T-t Path for Coesite-Bearing Peridotite-Eclogite Association in the Bixiling, Dabie Mountains. Chinese Science Bulletin, 40: 156-158 |
| Xiao Y, Hoefs J, Van den Kerkof A M, et al, 2000. Fluid History of UHP Metamorphism in Dabie Shan, China: A Fluid Inclusion and Oxygen Isotope Study on the Coesite-Bearing Eclogite from Bixiling. Contributions to Mineralogy and Petrology. 139: 1-16 doi: 10.1007/s004100050570 |
| Zhang R Y, Liou J G. 1994b. Coesite-Bearing Eclogite in Henan Province, Central China: Detailed Petrography Glaucophane Stability and PT-Path. Eur J Mineral, 6: 217-233 doi: 10.1127/ejm/6/2/0217 |
| Zhang R Y, Liou J G. 1994b. Significance of Magnetite Paragenesis in Ultrahigh-Pressure Metarnorphic Rock. Am Mineralogist, 79: 397-400 |
| Zhang R Y, Liou J G, Cong B, 1995. Talc, Megnesite and Ti-Clinohumite-Bearing UHP Meta-mafic and Ultramafic Complex in the Dabie Mountains. China. J Petrol, 36: 1011-1037 doi: 10.1093/petrology/36.4.1011 |
| Zhang H, Zhong Z, Gao S, et al, 2001. U-Pb Zircon Age of the Foliated Garnet-Bearing Granites in western Dabie Mountains, Central China. Chinese Science Bulletin, 46: 1657-1660 doi: 10.1007/BF02900630 |
| Zhong Z, Zhang H. Suo S, et al, 1999. Partial Melting Processes during Exhumation of Ultrahigh-Pressure Metamorphic Rocks in Dabieshan, China. J China Univ Geos, 10: 194-199 |
Figures(8)
Copyright © 2013-2020 Journal of Earth Science 鄂ICP备15021562号-2
Tel: +86-27-67885075 Fax: +86-27-67885075 E-mail: xbb@cug.edu.cn
Address: Editorial Office of Journal, China University of Geosciences, Yujiashan, Wuhan, Hubei 430074, P. R. China
Supported by:
Beijing Renhe Information Technology Co. Ltd
E-mail:
info@rhhz.net
DownLoad:
