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Two fresh types of eclogites in the Dabie-Sulu UHP metamorphic belt, China: Implications for the deep subduction and earliest stages of exhumation of the continental crust

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Abstract

Two fresh types of eclogites, namely the massive eclogite and foliated eclogite, are discernible in large eclogite bodies surrounded by country rock gneisses from the Dabie (大别)-Sulu (苏鲁) UHP metamorphic zone. They are different in mineral assemblage, texture and structure at various scales. The massive eclogite has a massive appearance with a metamorphic inequigranular and granoblastic texture, which consists mainly of nominally anhydrous minerals such as garnet, omphacite, rutile with inclusions of coesite and rare microdiamond. Massive eclogites which formed at the peak UHP metamorphic conditions (∼3.1–4.0 GPa, 800±50 °C) within the coesite to diamond stability field recorded the deep continental subduction to mantle depths greater than 100 km during the Triassic (∼250–230 Ma). The diagnostic UHP minerals, mineral assemblages and absence of notable macroscopic deformation indicate the peak metamorphic’ forbidden-zone’ P-T conditions, an extremely low geothermal gradient (≤7 °C·km−1) and low differential stress. The foliated eclogite is composed of garnet+omphacite+rutile+phengite+kyanite+zoisite+talc+nyböite±coesite/quartz pseudomorphs after coesite. It is quite clear that the foliated eclogite bears relatively abundant hydrous mineral, and shows well-developed penetrative foliation carrying mineral and stretching lineation reflecting intense plastic deformation or flow of eclogite minerals. The foliated eclogite occurred at mantle levels and recorded the earliest stages of exhumation of UHP metamorphic rocks. At a map scale, the foliated eclogites define UHP eclogite-facies shear zones or high-strain zones. Asymmetric structures are abundant in the zones, implying bulk plane strain or dominant non-coaxial deformation within the coesite stability field. The earliest stages of exhumation, from mantle depths to the Moho or mantle-crust boundary layering, were characterized by a sub-vertical tectonic wedge extrusion, which occurred around 230-210 Ma. The three-dimensional relationship between the massive and foliated eclogites is well displayed a typical ‘block-in-matrix’ rheological fabric pattern indicating the partitioning of deformation and metamorphism in the UHP petrotectonic unit. The existing data support the now widely accepted concept of deep continental subduction/collision and subsequent exhumation between the Yangtze and Sino-Korean cratons. The pressure is a constitutive geological variable. The influence of tectonic overpresure on UHP metamorphism is rather limited.

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References Cited

  • Ames, L., Zhou, G. Z., Xiong, B. C., 1996. Geochronology and Isotopic Character of Ultrahigh-Pressure Metamorphism with Implications for Collision of the Sino-Korean and Yangtze Cratons, Central China. Tectonics, 15(2): 472–489, doi:10.1029/95TC02552

    Article  Google Scholar 

  • Berthé, D., Choukroune, P., Jegouzo, P., 1979. Orthogneiss, Mylonite and on Coaxial Deformation of Granites: The Example of the South Armorican Shear Zone. Journal of Structural Geology, 1(1): 31–42, doi:10.1016/0191-8141(79)90019-1

    Article  Google Scholar 

  • Burg, J. P., 1999. Ductile Structures and Instabilities: Their Implication for Variscan Tectonics in the Ardennes. Tectonophysics, 309(1–4): 1–25, doi:10.10.1016/soo40-1951(99)00129-8

    Article  Google Scholar 

  • Burov, E., Yamato, P., 2008. Continental Plate Collision, P-T-t-z Conditions and Unstable vs. Stable Plate Dynamics: Insights from Thermo-Mechnical Modelling. Lithos, 103(1–2): 178–204

    Article  Google Scholar 

  • Carswell, D. A., 1986. The Metamorphic Evolution of Mg-Cr Type Norwegian Garnet Peridotites. Lithos, 19(3–4): 279–297, doi:10.1016/0024-4937(86)90028-9

    Article  Google Scholar 

  • Chavangnac, V., Jahn, B. M., 1996. Coesite-Bearing Eclogites from the Bixiling Complex, Dabie Mountains, China: Sm-Nd Ages, Geochemical Characteristics and Tectonic Implications. Chemical Geology, 133(1–4): 29–51, doi:10.1016/s0009-2541(96)00068-X

    Article  Google Scholar 

  • Chopin, C., 2003. Ultrahigh-Pressure Metamorphism: Tracing Continental Crust into the Mantle. Earth and Planetary Science Letters, 212: 1–14, doi:10.1016/soo12-821x(03)00261-9

    Article  Google Scholar 

  • Cong, B. L., Zhai, M. G., Carswell, D. A., et al., 1995. Petrogenesis of Ultrahigh-Pressure Rocks and Their Country Rocks at Shuanghe in Dabieshan, Central China. European Journal of Minaralogy, 7: 119–138

    Google Scholar 

  • Gao, X. Y., Zheng, Y. F., Chen, Y., 2012. Dehydration Melting of Ultrahigh-Pressure Eclogite in Dabie Orogen: Evidence from Multiphase Solid Inclusions in Garnet. Journal of Metamorphic Geology, 30(2): 193–212

    Article  Google Scholar 

  • Hacker, B. R., Wallis, S. R., Mcwilliams, M. O., et al., 2009. 40Ar/39Ar Constraints on the Tectonic History and Architecture of the Ultrahigh-Pressure Sulu Orogen. Journal of Metamorphic Geology, 27: 827–844, doi:10.1111/j,1525-1314,2009.00840.x

    Article  Google Scholar 

  • Ji, S. C., Sarawatari, K., Mainprice, D., et al., 2003. Microstructures Petrofabrics and Seismic Properties of Ultrahigh-Pressure Eclogites from Sulu Region, China: Implications for Rheology of Subducted Continental Crust and Origin of Mantle Reflections. Tectonophysics, 370: 49–76, doi:10.1016/S0040-1951(03)00177-X

    Article  Google Scholar 

  • Ji, S. C., Xu, Z. Q., Jin, Z. M., et al., 2010. On the Quartz-Coesite Transition. Science in China (Series D Earth Scienses), 40(7): 822–830 (in Chinese)

    Google Scholar 

  • Jin, Z. M., Zhang, J. F., Green, H. W. II, et al., 2001. Eclogite Rheology: Implications for Subducted Lithosphere. Geology, 29(8): 667–670, doi:10.1130/0091-7613(2001)029<0667: ERIFSL>2.0.co:25

    Article  Google Scholar 

  • Kretz, R., 1983. Symbols for Rock-Forming Minerals. American Mineralogist, 68: 277–279

    Google Scholar 

  • Lenze, A., Stöckhert, B., 2007. Microfabrics of UHP Metamorphic Granites in the Dora Moura Massif, Western Alps—No Evidence of Deformation at Depth. Journal of Metamorphic Geology, 25: 461–475

    Article  Google Scholar 

  • Li, S. G., Jagoupic, E., Chen, Y. Z., et al., 2000. Sm-Nd and Rb-Sr Isotopic Chronology and Cooling History of Ultrahigh Pressure Metamorphic Rocks and Their Country Rocks at Shuanghe in the Dabie Mountains, Central China. Geochimica et Cosmochimica Acta, 64(6): 1077–1093

    Article  Google Scholar 

  • Li, Z. H., Gerya, T. V., Burg, G. P., 2010. Influence of Tectonic Overpressure on P-T Paths of HP-UHP Rocks in Continental Collision Zones: Thermomechanical Modelling. Journal of Metamorphic Geology, 18(1): 67–77

    Google Scholar 

  • Liou, J. G., Banno, S., Ernst, W. G., 1995. Ultrahigh-Pressure Metamorphism and Tectonics. The Island Arc, 4(4): 233–239, doi:10.1111/j.1440-1738.1995.tb00146.x

    Article  Google Scholar 

  • Liou, J. G., Maruyama, S. M., Cong, B. L., 1998. Introduction to Geodynamics for High- and Ultrahigh-Pressure Metamorphism. The Island Arc, 7(1–2): 1–5, doi:10.1046/j.1440-1738.1998.00182.X

    Google Scholar 

  • Liu, D. Y., Jian, P., 2004. 243 Ma and 228 Ma Retrograde Events of the Shuanghe Jadeite, Eastern Dabie Mountains—SHRIMP Dating, Mineral Inclusions and Zircon REE Patterns. Acta Geologica Sinica, 78(2): 211–217 (in Chinese with English Abstract)

    Google Scholar 

  • Liu, X. C., Wu, Y. B., Cao, S., et al., 2011. Zircon U-Pb and Hf Evidence for Coupled Subduction of Oceanic and Continental Crust during the Carboniferous in the Huwan Shear Zone, Western Dabie Orogen, Central China. Journal of Metamorphic Geology, 29(2): 233–249, doi:10.1111/j.1525-1314.2010.00914.x

    Article  Google Scholar 

  • Liu, X. W., Jin, Z. M., Jin, S. Y., et al., 2005. Defference of Deformation Characteristics of Garnets from Two Types of Eclogites: Evidence from TEM Study. Acta Petrologica Sinica, 21(2): 411–420 (in Chinese with English Abstract)

    Google Scholar 

  • Lü, G. X., Chen, J., Li, X. B., et al., 1999. The Formation Depth of Coesite-Bearing Eclogite, Dabie UHPM Zone, China. Chinese Science Bulletin, 44(5): 398–412

    Article  Google Scholar 

  • Mancktelow, N. S., 2008. Tectonic Pressure: Theoretical Concepts and Modelled Examples. Lithos, 103(1–2): 149–177, doi:10.1016/j.lithos.2007.09.013

    Article  Google Scholar 

  • Marayama, 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(2): 112–121, doi:10.1111/j.1440-1738.1994.tb00099.x

    Article  Google Scholar 

  • Oh, C. W., Kim, S. W., Choi, S. G., et al., 2005. First Finding of Eclogite Facies Metamorphic Event in South Korea and Its Correlation with the Dabie-Sulu Collision Belt in China. The Journal of Geology, 113(2): 226–232

    Article  Google Scholar 

  • Okay, A. I., 1993. Petrology of a Diamond- and Coesite-Bearing Metamorphic Terrain, Dabie Shan, China. European Journal of Mineralogy, 5: 659–675

    Google Scholar 

  • Palmeri, R., Frezzotti, M. L., Godard, G., et al., 2009. Pressure-Induced Incipient Amorphization of α-Quartz and Transition to Coesite in an Eclogite from Antarctica: A First Record and Some Consequences. Journal of Metamorphic Geology, 27(9): 685–705, doi:10.1111/j.1525-1314.2009. 00843.x

    Article  Google Scholar 

  • Petrini, K., Podladchikov, Y., 2000. Lithosphere-Depth Relationship in Compressive Regions of Thickened Crust. Journal of Metamorphic Geology, 18(1): 67–77

    Article  Google Scholar 

  • Ree, J. H., Cho, M., Kwon, S. T., 1996. Possible Eastward Extension of Chinese Collsion Belt in South Korea: The Imjingang Belt. Geology, 24(12): 1071–1074, doi:10.1130/0091-7613(1996)024<1071:PEEOCF>2.3.Co;2

    Article  Google Scholar 

  • Stöckhert, B., Renner, J., 1998. Rheology of Crustal Rocks at Ultrahigh Pressure. In: Hacker, B. R., Liou, J. G., eds., When Continents Collide: Geodynamics and Geochemistry of Ultrahigh-Pressure Rocks. Kluwer Academic Publishers, Dordrecht. 57–95

    Google Scholar 

  • Su, W. H., Liu, S., Xu, D. P., et al., 2006. A New Way of Transformation from α-Quartz to Coesite. Progress in Natural Science, 16(10): 1090–1097

    Article  Google Scholar 

  • Suo, S. T., Zhong, Z. Q., Zhou, H. W., et al., 2005.. Tectonic Evolution of the Dabie-Sulu UHP and HP Metamorphic Belts, East-Central China: Structural Record in UHP Rocks. International Geology Review, 47(11): 1207–1221, doi:10.2747/0020-6814.47.11.1207

    Article  Google Scholar 

  • Suo, S. T., Zhong, Z. Q., Zhou, H. W., et al., 2009. Meso and Micro-Structures of Foliated Eclogites in Dabie-Sulu UHP Belt and Implications for the Earlist Stages of Exhumation of UHP Metamorphic Rocks: An Example from Taohang, Southern Shandong, China. Journal of Earth Science, 20(4): 649–658, doi:do]10.1007/s12583-009-0057-5

    Article  Google Scholar 

  • Wang, L., Jin, Z. M., Kusky, T. M., et al., 2010. Microfabric Characteristics of Ultra-High-Pressure Metamorphosed Jadeite-Quartzite and Eclogite from Shuanghe, Dabie Mountains, China. Journal of Metamorphic Geology, 28(2): 163–182, doi:10.1111/j.1525-1314.2009.00859.x

    Article  Google Scholar 

  • Xu, S. T., Su, W., Liu, Y. C., et al., 1992. Diamond from the Dabie Shan Metamorphic Rocks and Its Implication for the Tectonic Setting. Science, 256(5053): 80–82, doi:10.1126/science,256.5053.80

    Article  Google Scholar 

  • Xu, Z. Q., Yang, W. C., Ji, S. C., et al., 2009. Deep Root of a Continent-Continent Collision: Evidence from the Chinese Continental Scientific Drilling (CCSD) Deep Borohole in the Sulu Ultrahigh Pressure (HP-UHP) Metamorphic Terrane, China. Tectonophysics, 475(2): 204–219

    Article  Google Scholar 

  • Yao, Y. P., Ye, K., Liu, J. B., et al., 2000. A Transitional Eclogite-to High Pressure Granulite-Facies Overprint on Coesite-Eclogite at Taohang in the Sulu Ultrahigh-Pressure Terrane, Eastern China. Lithos, 52(1–4): 109–120

    Article  Google Scholar 

  • Zhang, R. Y., Liou, J. G., 1998. Ultrahigh-Pressure Metamorphism of the Sulu Terrane, Eastern China: A Prospective View. Continental Dynamics, 3(1/2): 32–53, doi:10.1029/2001GL014128

    Google Scholar 

  • Zhang, R. Y., Liou, J. G., Cong, B. L., 1995. Talc-, Magnesite- and Ti-Clinohumite-Bearing Ultrahigh-Pressure Meta-Mafic and Ultramafic Complex in the Dabie Mountains, China. Journal of Petrology, 36(4): 1011–1037, doi:10.1093/petrology/36.4.1011

    Article  Google Scholar 

  • Zhang, R. Y., Liou, J. G., Omori, S., et al., 2012. Tale of the Kulet Eclogite from the Kokchetav Massive, Kazakhstan: Initial Tectonic Setting and Transition from Amphibolite to Eclogite. Journal of Metamorphic Geology, 30(5): 537–559, doi:10.1111/j.1525-1314.2012.00980.x

    Article  Google Scholar 

  • Zhong, Z. Q., Suo, S. T., Zhang, L., et al., 2007. Plastic Rheology of Rocks—A Structural Study on the Dabie-Sulu UHP and HP Metamorphic Belts. China University of Geosciences Press, Wuhan (in Chinese)

    Google Scholar 

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Authors and Affiliations

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

    Shutian Suo  (索书田)

  2. School of Earth Sciences and Resources, China University of Geosciences, Beijing, 100083, China

    Shutian Suo  (索书田)

  3. State Key Laboratory of Geological Processes and Mineral Resources, China University of Geociences, Wuhan, 430074, China

    Zengqiu Zhong  (钟增球), Hanwen Zhou  (周汉文), Zhendong You  (游振东) & Li Zhang  (张利)

  4. Faculty of Earth Sciences, China University of Geociences, Wuhan, 430074, China

    Zengqiu Zhong  (钟增球), Hanwen Zhou  (周汉文), Zhendong You  (游振东) & Li Zhang  (张利)

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  1. Shutian Suo  (索书田)
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  2. Zengqiu Zhong  (钟增球)
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  5. Li Zhang  (张利)
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This study was supported by the National Natural Science Foundation of China (Nos. 40372094 and 49972067)

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Suo, S., Zhong, Z., Zhou, H. et al. Two fresh types of eclogites in the Dabie-Sulu UHP metamorphic belt, China: Implications for the deep subduction and earliest stages of exhumation of the continental crust. J. Earth Sci. 23, 775–785 (2012). https://doi.org/10.1007/s12583-012-0295-9

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  • DOI: https://doi.org/10.1007/s12583-012-0295-9

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