Zircon Hf–O isotope evidence for crust–mantle interaction during continental deep subduction

Earth and Planetary Science Letters, pp. 229-244, 2011.

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The postcollisional mafic–ultramafic rocks are interpreted to derive from partial melting of the mantle sources of heterogeneous isotope enrichment that would be generated by the crust–mantle interaction during the continental deep subduction

Abstract:

In-situ SIMS zircon U–Pb dating and O isotope analysis as well as LA-(MC)-ICPMS zircon U–Pb dating and Lu–Hf isotope analysis were carried out for postcollisional mafic–ultramafic rocks in the Dabie orogen, China. The zircon U–Pb dating gave consistent ages of 126±1 to 131±1Ma for magma crystallization. Survival of residual zircon cores i...More

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Introduction
  • Subduction-zone magmatism is considered as an important mechanism for exchanging mass and energy between the mantle and the crust (e.g., Coltice, 2000; Simon and Lécuyer, 2005).
  • Postcollisional magmatic rocks are common in typical continent collisional zones (e.g., Chung et al, 2005; Eyal et al, 2010; Jahn et al, 1999; Zhao and Zheng, 2009).
  • They are, in lithochemistry, mainly potassic and in particular high-K calc-alkaline with subordinate amount of shoshonitic rocks (Bonin, 2004; Liégeois, 1998).
  • Insights into the origin of these rocks are crucial to understanding of the crust–mantle interaction in continental subduction zones
Highlights
  • Subduction-zone magmatism is considered as an important mechanism for exchanging mass and energy between the mantle and the crust (e.g., Coltice, 2000; Simon and Lécuyer, 2005)
  • The zircon U–Pb isotope data by the SIMS and LA-ICPMS analyses are presented in Supplementary Tables S1 and S2, respectively
  • The variable zircon Hf–O isotope compositions can be categorized into three groups, which are respectively comparable to three layers of the subducted continental crust of the South China Block
  • The postcollisional mafic–ultramafic rocks are interpreted to derive from partial melting of the mantle sources of heterogeneous isotope enrichment that would be generated by the crust–mantle interaction during the continental deep subduction
  • The overlying subcontinental lithospheric mantle (SCLM)-wedge peridotite would be metasomatized by hydrous silicate melts derived from the different layers of subducted continental crust to form the orogenic SCLM for the mafic–ultramafic magmatism
  • Pyroxenite 09ZJP01 from Zhujiapu is composed of clinopyroxene (60%), orthopyroxene (35%), hornblende (2%) and minor accessory minerals including magnetite, ilmenite and zircon
  • Various parts of the subducted continental crust were recycled into the mantle and underwent melt-peridotite reaction, resulting in heterogeneity of the orogenic SCLM
Methods
  • According to metamorphic P–T conditions on the outcrop scale, the Dabie orogen can be divided into five parts (Zheng et al, 2005a): (1) Beihuaiyang low-T/low-P greenschist-facies zone, (2) North Dabie high-T/UHP granulite-facies zone, (3) Central Dabie mid-T/UHP eclogite-facies zone, (4) South Dabie low-T/UHP eclogite-facies zone, and (5) Susong low-T/HP blueschist-facies zone
  • All of these metamorphic units are intruded by postcollisional magmatic rocks in the ages of Early Cretaceous (Zhao and Zheng, 2009)
Results
  • The zircon U–Pb isotope data by the SIMS and LA-ICPMS analyses are presented in Supplementary Tables S1 and S2, respectively.
  • The second LAMC-ICPMS zircon Lu–Hf isotope data for the mafic–ultramafic rocks and the reference standards (Mud Tank, GJ-1, and Temora) are listed in Supplementary Tables S5 and S6, respectively.
  • The authors have obtained the reasonable interference corrections and the accurate measurements of sample zircon 176Hf/177Hf ratios during the second analyses
  • In this regard, the authors use the secondly analyzed Lu–Hf isotope data at Beijing for petrogenetic interpretation
Conclusion
  • The postcollisional mafic–ultramafic rocks in the Dabie orogen have generally low but variable zircon εHf(t) values of −29.1 to −1.0 with Hf model ages of late Mesoproterozoic to Mesoarchean (1.2 to 3.0 Ga).
  • They have variable zircon δ18O values of 2.0 to 7.3‰, mostly outside the normal mantle values.
  • Various parts of the subducted continental crust were recycled into the mantle and underwent melt-peridotite reaction, resulting in heterogeneity of the orogenic SCLM
Summary
  • Introduction:

    Subduction-zone magmatism is considered as an important mechanism for exchanging mass and energy between the mantle and the crust (e.g., Coltice, 2000; Simon and Lécuyer, 2005).
  • Postcollisional magmatic rocks are common in typical continent collisional zones (e.g., Chung et al, 2005; Eyal et al, 2010; Jahn et al, 1999; Zhao and Zheng, 2009).
  • They are, in lithochemistry, mainly potassic and in particular high-K calc-alkaline with subordinate amount of shoshonitic rocks (Bonin, 2004; Liégeois, 1998).
  • Insights into the origin of these rocks are crucial to understanding of the crust–mantle interaction in continental subduction zones
  • Methods:

    According to metamorphic P–T conditions on the outcrop scale, the Dabie orogen can be divided into five parts (Zheng et al, 2005a): (1) Beihuaiyang low-T/low-P greenschist-facies zone, (2) North Dabie high-T/UHP granulite-facies zone, (3) Central Dabie mid-T/UHP eclogite-facies zone, (4) South Dabie low-T/UHP eclogite-facies zone, and (5) Susong low-T/HP blueschist-facies zone
  • All of these metamorphic units are intruded by postcollisional magmatic rocks in the ages of Early Cretaceous (Zhao and Zheng, 2009)
  • Results:

    The zircon U–Pb isotope data by the SIMS and LA-ICPMS analyses are presented in Supplementary Tables S1 and S2, respectively.
  • The second LAMC-ICPMS zircon Lu–Hf isotope data for the mafic–ultramafic rocks and the reference standards (Mud Tank, GJ-1, and Temora) are listed in Supplementary Tables S5 and S6, respectively.
  • The authors have obtained the reasonable interference corrections and the accurate measurements of sample zircon 176Hf/177Hf ratios during the second analyses
  • In this regard, the authors use the secondly analyzed Lu–Hf isotope data at Beijing for petrogenetic interpretation
  • Conclusion:

    The postcollisional mafic–ultramafic rocks in the Dabie orogen have generally low but variable zircon εHf(t) values of −29.1 to −1.0 with Hf model ages of late Mesoproterozoic to Mesoarchean (1.2 to 3.0 Ga).
  • They have variable zircon δ18O values of 2.0 to 7.3‰, mostly outside the normal mantle values.
  • Various parts of the subducted continental crust were recycled into the mantle and underwent melt-peridotite reaction, resulting in heterogeneity of the orogenic SCLM
Tables
  • Table1: Zircon SIMS δ18O values together with SIMS 206Pb/238U ages, LA-(MC)-ICPMS 206Pb/238U ages and Hf isotopes for postcollisional mafic–ultramafic rocks in the Dabie orogen
Download tables as Excel
Funding
  • This study was supported by funds from the Chinese Ministry of Science and Technology (2009CB825004), the Chinese Academy of Sciences (KZCX2-YW-Q08-3 and KZCX2-YW-QN513), and the Natural Science Foundation of China (40921002 and 41073025)
Study subjects and analysis
samples: 4
Zircon U–Pb ages. Generally, zircons from the four samples are not euhedral (Fig. 3), and have grain sizes of 100 to 300 μm, with length to width ratios of 2:1 to 4:1. Most zircons are characterized by oscillatory, sector and banded zoning without recrystallization and overgrowth, which is typical of magmatic origin

samples: 4
Some zircon grains from Pl-rich hornblendite 09DB100 contain residual cores. As illustrated in Fig. 4, the SIMS zircon U–Pb dating for the four samples shows that the U–Pb isotope data are concordant within the analytical errors. This yields weighted 206Pb/238U ages of 129 ± 1 Ma (n = 15, MSWD = 0.70) for hornblendite 09DSC04 and 128 ± 1 Ma (n = 14, MSWD = 1.15) for Pl-rich hornblendite 09DB97 from Daoshichong pluton, 128 ± 1 Ma (n = 21, MSWD = 1.12) for pyroxenite 09ZJP01 and 126 ± 2 Ma (n = 18, MSWD = 8.5) for Pl-rich hornblenite 09DB100 from Zhujiapu pluton

data: 15
As illustrated in Fig. 4, the SIMS zircon U–Pb dating for the four samples shows that the U–Pb isotope data are concordant within the analytical errors. This yields weighted 206Pb/238U ages of 129 ± 1 Ma (n = 15, MSWD = 0.70) for hornblendite 09DSC04 and 128 ± 1 Ma (n = 14, MSWD = 1.15) for Pl-rich hornblendite 09DB97 from Daoshichong pluton, 128 ± 1 Ma (n = 21, MSWD = 1.12) for pyroxenite 09ZJP01 and 126 ± 2 Ma (n = 18, MSWD = 8.5) for Pl-rich hornblenite 09DB100 from Zhujiapu pluton. One concordant U–Pb age of 770 ± 11 Ma was also obtained in a zircon core from sample 09DB100 (Table S1)

samples: 4
One concordant U–Pb age of 770 ± 11 Ma was also obtained in a zircon core from sample 09DB100 (Table S1). LA-ICPMS zircon U–Pb dating was also carried out for the same four samples, the results show that most of the U–Pb isotope data are concordant within the analytical errors (Fig. 4). Except for one analysis with a relatively old 206Pb/238U age of 149 ± 3 Ma, the other thirty-two analyses yield a weighted 206Pb/238U age of 131 ± 1 Ma (MSWD = 4.4) for hornblendite 09DSC04

Reference
  • Blichert-Toft, J., Albarède, F., 1997. The Lu–Hf isotope geochemistry of chondrites and the evolution of the mantle–crust system. Earth Planet. Sci. Lett. 148, 243–258.
    Google ScholarLocate open access versionFindings
  • Bonin, B., 2004. Do coeval mafic and felsic magmas in post-collisional to within-plate regimes necessarily imply two contrasting, mantle and crustal, sources? A review. Lithos 78, 1–24.
    Google ScholarLocate open access versionFindings
  • Bryant, D.L., Ayers, J.C., Gao, S., Miller, C.F., Zhang, H., 2004.
    Google ScholarFindings
  • Chen, B., Jahn, B.-m., Wei, C., 2002. Petrogenesis of Mesozoic granitoids in the Dabie UHP complex, Central China: trace element and Nd–Sr isotope evidence. Lithos 60, 67–88.
    Google ScholarLocate open access versionFindings
  • Chen, J.F., Xie, Z., Li, H.M., Zhang, X.-D., Zhou, T.X., Park, Y.S., Ahn, K.S., Chen, D.G., Zhang, X., 2003. U–Pb zircon ages for a collision-related K-rich complex at Shidao in the Sulu ultrahigh pressure terrane, China. Geochem. J. 37, 35–46.
    Google ScholarLocate open access versionFindings
  • Chen, R.-X., Zheng, Y.-F., Gong, B., Zhao, Z.-F., Gao, T.-S., Chen, B., Wu, Y.-B., 2007. Origin of retrograde fluid in ultrahigh-pressure metamorphic rocks: constraints from mineral hydrogen isotope and water content changes in eclogite-gneiss transitions in the Sulu orogen. Geochim. Cosmochim. Acta 71, 2299–2325.
    Google ScholarLocate open access versionFindings
  • Chen, R.-X., Zheng, Y.-F., Gong, B., 2011. Mineral hydrogen isotopes and water contents in ultrahigh-pressure metabasite and metagranite: constraints on fluid flow during continental subduction-zone metamorphism. Chem. Geol. 281, 103–124.
    Google ScholarLocate open access versionFindings
  • Chopin, C., 2003. Ultrahigh-pressure metamorphism: tracing continental crust into the mantle. Earth Planet. Sci. Lett. 212, 1–14.
    Google ScholarLocate open access versionFindings
  • Chu, N.-C., Taylor, R.N., Chavagnac, V.r., Nesbitt, R.W., Boella, R.M., Milton, J.A., German, C.R., Bayon, G., Burton, K., 2002. Hf isotope ratio analysis using multi-collector inductively coupled plasma mass spectrometry: an evaluation of isobaric interference corrections. J. Anal. Atom. Spectrom. 17, 1567–1574.
    Google ScholarLocate open access versionFindings
  • Chung, S., Chu, M., Zhang, Y., Xie, Y., Lo, C., Lee, T., Lan, C., Li, X., Zhang, Q., Wang, Y., 2005. Tibetan tectonic evolution inferred from spatial and temporal variations in postcollisional magmatism. Earth Sci. Rev. 68, 173–196.
    Google ScholarLocate open access versionFindings
  • Coltice, N., 2000. 40K–40Ar Constraints on recycling continental crust into the mantle. Science 288, 845–847.
    Google ScholarLocate open access versionFindings
  • Elhlou, S., Belousova, E., Griffin, W.L., Pearson, N.J., O'Reilly, S.Y., 2006. Trace element and isotopic composition of GJ red zircon standard by laser ablation. Geochim. Cosmochim. Acta 70, A158. doi:10.1016/j.gca.2006.06.1383.
    Locate open access versionFindings
  • Eyal, M., Litvinovsky, B., Jahn, B.M., Zanvilevich, A., Katzir, Y., 2010. Origin and evolution of post-collisional magmatism: Coeval Neoproterozoic calc-alkaline and alkaline suites of the Sinai Peninsula. Chem. Geol. 269, 153–179.
    Google ScholarLocate open access versionFindings
  • Fan, W.-M., Guo, F., Wang, Y.-J., Zhang, M., 2004. Late Mesozoic volcanism in the northern Huaiyang tectono-magmatic belt, central China: partial melts from a lithospheric mantle with subducted continental crust relicts beneath the Dabie orogen? Chem. Geol. 209, 27–48.
    Google ScholarLocate open access versionFindings
  • Ferrando, S., Frezzotti, M.L., Dallai, L., Compagnoni, R., 2005. Multiphase solid inclusions in UHP rocks (Su-Lu, China): Remnants of supercritical silicate-rich aqueous fluids released during continental subduction. Chem. Geol. 223, 68–81.
    Google ScholarLocate open access versionFindings
  • Griffin, W.L., Pearson, N.J., Belousova, E., Jackson, S.E., van Achterbergh, E., O'Reilly, S.Y., Shee, S.R., 2000. The Hf isotope composition of cratonic mantle: LA–MC–ICPMS analysis of zircon megacrysts in kimberlites. Geochim. Cosmochim. Acta 64, 133–147.
    Google ScholarLocate open access versionFindings
  • Griffin, W.L., Wang, X., Jackson, S.E., Pearson, N.J., O'Reilly, S.Y., Xu, X., Zhou, X., 2002. Zircon chemistry and magma mixing, SE China: in-situ analysis of Hf isotopes, Tonglu and Pingtan igneous complexes. Lithos 61, 237–269.
    Google ScholarLocate open access versionFindings
  • Guo, F., Fan, W.-M., Wang, Y.-J., Zhang, M., 2004. Origin of early Cretaceous calc-alkaline lamprophyres from the Sulu orogen in eastern China: implications for enrichment processes beneath continental collisional belt. Lithos 78, 291–305.
    Google ScholarLocate open access versionFindings
  • Hoefs, J., 2009. Stable Isotope Geochemistry, 6th Edition. Springer Verlag, Berlin Heidelberg. 285 pp.
    Google ScholarFindings
  • Hofmann, A.W., 1997. Mantle geochemistry: the message from oceanic volcanism. Nature 385, 219–229.
    Google ScholarLocate open access versionFindings
  • Huang, J., Zheng, Y.-F., Zhao, Z.-F., Wu, Y.-B., Zhou, J.-B., Liu, X.-M., 2006. Melting of subducted continent: element and isotopic evidence for a genetic relationship between Neoproterozoic and Mesozoic granitoids in the Sulu orogen. Chem. Geol. 229, 227–256.
    Google ScholarLocate open access versionFindings
  • Huang, F., Li, S.G., Dong, F., Li, Q.L., Chen, F., Wang, Y., Yang, W., 2007. Recycling of deeply subducted continental crust in the Dabie Mountains, central China. Lithos 96, 151–169.
    Google ScholarLocate open access versionFindings
  • Iizuka, T., Hirata, T., 2005. Improvements of precision and accuracy in in situ Hf isotope microanalysis of zircon using the laser ablation-MC-ICPMS technique. Chem. Geol. 220, 121–137.
    Google ScholarLocate open access versionFindings
  • Irvine, T.N., Baragar, W.R.A., 1971. A guide to the chemical classification of the common volcanic rocks. Can. J. Earth Sci. 8, 523–548.
    Google ScholarLocate open access versionFindings
  • Jahn, B.-m., Wu, F.-Y., Lo, C.-H., Tsai, C.-H., 1999. Crustal–mantle interaction induced by deep subduction of the continental crust: geochemical and Sr–Nd isotopic evidence from post-collisional mafic–ultramafic intrusions of the northern Dabie complex, central China. Chem. Geol. 157, 119–146.
    Google ScholarLocate open access versionFindings
  • Lackey, J.S., Valley, J.W., Chen, J.H., Stockli, D.F., 2008. Dynamic magma systems, crustal recycling, and alteration in the central Sierra Nevada batholith: the oxygen isotope record. J. Petrol. 49, 1397–1426.
    Google ScholarLocate open access versionFindings
  • Lei, N.-Z., Wu, Y.-B., 2008. Zircon U–Pb age, trace element, and Hf isotope evidence for Paleoproterozoic granulite-facies metamorphism and Archean crustal remnant in the Dabie orogen. J. China Univ. Geosci. 19, 110–134.
    Google ScholarLocate open access versionFindings
  • Li, S.-G., Jagoutz, E., Lo, C.H., Chen, Y.-Z., Li, Q.-L., Xiao, Y.-L., 1999. Sm/Nd, Rb/Sr, and 40Ar/39Ar isotopic systematics of the ultrahigh-pressure metamorphic rocks in the Dabie–Sulu belt, central China: a retrospective view. Int. Geol. Rev. 41, 1114–1124.
    Google ScholarLocate open access versionFindings
  • Li, X.-H., Liu, Y., Li, Q.-L., Guo, C., Chamberlain, K.R., 2009. Precise determination of Phanerozoic zircon Pb/Pb age by multicollector SIMS without external standardization. Geochem. Geophys. Geosyst. 10, Q04010.
    Google ScholarLocate open access versionFindings
  • Li, X.-H., Li, W.-X., Li, Q.-L., Wang, X.-C., Liu, Y., Yang, Y.-H., 2010a. Petrogenesis and tectonic significance of the 850 Ma Gangbian alkaline complex in South China: evidence from in situ zircon U–Pb dating, Hf–O isotopes and whole-rock geochemistry. Lithos 114, 1–15.
    Google ScholarLocate open access versionFindings
  • Li, X.-H., Long, W.-G., Li, Q.-L., Liu, Y., Zheng, Y.-F., Yang, Y.-H., Chamberlain, K.R., Wan, D.-F., Guo, C.-H., Wang, X.-C., Tao, H., 2010b. Penglai zircon megacrysts: a potential new working reference material for microbeam determination of Hf–O isotopes and U–Pb age. Geostand. Geoanal. Res. 34, 117–134.
    Google ScholarLocate open access versionFindings
  • Liégeois, J.P., 1998. Preface—some words on the post-collisional magmatism. Lithos 45, 15–17.
    Google ScholarLocate open access versionFindings
  • Liou, J.G., Zhang, R.Y., Ernst, W.G., 1997. Lack of fluid during ultrahigh-P metamorphism in the Dabie–Sulu region, Eastern China. Proceeding of 30th International Geologic Congress, 17, pp. 141–155.
    Google ScholarLocate open access versionFindings
  • Liou, J.G., Ernst, W.G., Zhang, R.Y., Tsujimori, T., Jahn, B.M., 2009. Ultrahigh-pressure minerals and metamorphic terranes—the view from China. J. Asian Earth Sci. 35, 199–231.
    Google ScholarLocate open access versionFindings
  • Liu, Y.-C., Li, S.-G., 2008. Detachment within subducted continental crust and multi-slice successive exhumation of ultrahigh-pressure metamorphic rocks: evidence from the Dabie–Sulu orogenic belt. Chin. Sci. Bull. 53, 3105–3119.
    Google ScholarLocate open access versionFindings
  • Liu, Y.-S., Gao, S., Hu, Z.-C., Gao, C.-G., Zong, K.-Q., Wang, D.-B., 2010. Continental and oceanic crust recycling-induced melt-peridotite interactions in the Trans-North China Orogen: U–Pb dating, Hf isotopes and trace elements in zircons from mantle xenoliths. J. Petrol. 51, 537–571.
    Google ScholarLocate open access versionFindings
  • Ludwig, K.R., 2003. ISOPLOT 3.00: A Geochronological Toolkit for Microsoft Excel. Berkeley Geochronology Center, California, Berkeley.
    Google ScholarFindings
  • Ma, C., Li, Z., Ehlers, C., Yang, K., Wang, R., 1998. A post-collisional magmatic plumbing system: Mesozoic granitoid plutons from the Dabieshan high-pressure and ultrahigh-pressure metamorphic zone, east-central China. Lithos 45, 431–456.
    Google ScholarLocate open access versionFindings
  • Machado, N., Simonetti, A., 2001. U–Pb dating and Hf isotopic composition of zircons by laser ablation-MC-ICP-MS. In: Sylvester, P. (Ed.), Laser-Ablation-ICPMS in the Earth Sciences: Principles and Applications: Short Course of Mineralogical Association of Canada, 29, pp. 121–146.
    Google ScholarLocate open access versionFindings
  • McDonough, W.F., Sun, S.-S., 1995. The composition of the Earth. Chem. Geol. 120, 223–253.
    Google ScholarLocate open access versionFindings
  • Middlemost, E.A.K., 1994. Naming materials in magma/igneous rock system. Earth Sci. Rev. 37, 215–224.
    Google ScholarLocate open access versionFindings
  • Nowell, G.M., Kempton, P.D., Noble, S.R., Fitton, J.G., Saunders, A.D., Mahoney, J.J., Taylor, R.N., 1998. High precision Hf isotope measurements of MORB and OIB by thermal ionisation mass spectrometry: insights into the depleted mantle. Chem. Geol. 149, 211–233.
    Google ScholarLocate open access versionFindings
  • Okay, A.I., Xu, S., Sengor, A.M.C., 1989. Coesite from the Dabie Shan eclogites, central China. Eur. J. Mineral. 1, 595–598.
    Google ScholarLocate open access versionFindings
  • Scherer, E., Munker, C., Mezger, K., 2001. Calibration of the lutetium–hafnium clock. Science 293, 683–687.
    Google ScholarLocate open access versionFindings
  • Simon, L., Lécuyer, C., 2005. Continental recycling: the oxygen isotope point of view. Geochem. Geophy. Geosyst. 6, Q08004.
    Google ScholarLocate open access versionFindings
  • Stacey, J.S., Kramers, J.D., 1975. Approximation of terrestrial lead isotope evolution by a two-stage model. Earth Planet. Sci. Lett. 26, 207–221.
    Google ScholarLocate open access versionFindings
  • Tang, J., Zheng, Y.-F., Wu, Y.-B., Gong, B., Zha, X.P., Liu, X.-M., 2008a. Zircon U–Pb age and geochemical constraints on the tectonic affinity of the Jiaodong terrane in the Sulu orogenm, China. Precambrian Res. 161, 389–418.
    Google ScholarLocate open access versionFindings
  • Tang, J., Zheng, Y.-F., Gong, B., Wu, Y.-B., Gao, T.-S., Yuan, H.-L., Wu, F.-Y., 2008b. Extreme oxygen isotope signature of meteoric water in magmatic zircon from metagranite in the Sulu orogen, China: implications for Neoproterozoic rift magmatism. Geochim. Cosmochim. Acta 72, 3139–3169.
    Google ScholarLocate open access versionFindings
  • Tang, H.-Y., Zheng, J.-P., Yu, C.-M., 2008c. Age and composition of the Rushan intrusive complex in the northern Sulu orogen, eastern China: petrogenesis and lithospheric mantle evolution. Geol. Mag. 146, 199–215.
    Google ScholarLocate open access versionFindings
  • Valley, J.W., Kinny, P.D., Schulze, D.J., Spicuzza, M.J., 1998. Zircon megacrysts from kimberlite: oxygen isotope variability among mantle melts. Contrib. Mineral. Petrol. 133, 1–11.
    Google ScholarLocate open access versionFindings
  • Wallis, S., Tsuboi, M., Suzuki, K., Fanning, M., Jiang, L., Tanaka, T., 2005. Role of partial melting in the evolution of the Sulu (eastern China) ultrahigh-pressure terrane. Geology 33, 129–132.
    Google ScholarLocate open access versionFindings
  • Wang, X.-M., Liou, J.-G., Mao, H.-K., 1989. Coesite-bearing eclogites from the Dabie Mountains in central China. Geology 17, 1085–1088.
    Google ScholarLocate open access versionFindings
  • Wang, Y.-J., Fan, W.-M., Peng, T., Zhang, H., Guo, F., 2005. Nature of the Mesozoic lithospheric mantle and tectonic decoupling beneath the Dabie Orogen, Central China: Evidence from Ar/Ar geochronology, elemental and Sr–Nd–Pb isotopic compositions of early Cretaceous mafic igneous rocks. Chem. Geol. 220, 165–189.
    Google ScholarLocate open access versionFindings
  • Wang, Q., Wyman, D.A., Xu, J.-F., Jian, P., Zhao, Z.-H., Li, C.-F., Xu, W., Ma, J.-L., He, B., 2007. Early Cretaceous adakitic granites in the Northern Dabie Complex, central China: implications for partial melting and delamination of thickened lower crust. Geochim. Cosmochim. Acta 71, 2609–2636.
    Google ScholarLocate open access versionFindings
  • Whitehouse, M.J., 2004. Assigning dates to thin gneissic veins in high-grade metamorphic terranes: a cautionary tale from Akilia, southwest Greenland. J. Petrol. 46, 291–318.
    Google ScholarLocate open access versionFindings
  • Wiedenbeck, M., Hanchar, J.M., Peck, W.H., Sylvester, P., Valley, J., Whitehouse, M., Kronz, A., Morishita, Y., Nasdala, L., Fiebig, J., Franchi, I., Girard, J.P., Greenwood, R., Hinton, R., Kita, N., Mason, P., Norman, M., Ogasawara, M., Piccoli, P., Rhede, D., Satoh, H., Schulz-Dobrick, B., Skår, O., Spicuzza, M., Terada, K., Tindle, A., Togashi, S., Vennemann, T., Xie, Q., Zheng, Y.F., 2004. Further characterisation of the 91500 zircon crystal. Geostand. Geoanal. Res. 28, 9–39.
    Google ScholarLocate open access versionFindings
  • Willbold, M., Stracke, A., 2010. Formation of enriched mantle components by recycling of upper and lower crust. Chem. Geol. 276, 188–197.
    Google ScholarLocate open access versionFindings
  • Woodhead, J.D., Hergt, J.M., 2005. Preliminary appraisal of seven natural zircon reference materials for in situ Hf isotope determination. Geostand. Geoanal. Res. 29, 183–195.
    Google ScholarLocate open access versionFindings
  • Woodhead, J., Hergt, J., Shelley, M., Eggins, S., Kemp, R., 2004. Zircon Hf-isotope analysis with an excimer laser, depth profiling, ablation of complex geometries, and concomitant age estimation. Chem. Geol. 209, 121–135.
    Google ScholarLocate open access versionFindings
  • Wu, Y.B., Zheng, Y.F., 2004. Genesis of zircon and its constraints on interpretation of U– Pb age. Chin. Sci. Bull. 49, 1554–1569.
    Google ScholarLocate open access versionFindings
  • Wu, F.-Y., Yang, Y.-H., Xie, L.-W., Yang, J.-H., Xu, P., 2006. Hf isotopic compositions of the standard zircons and baddeleyites used in U–Pb geochronology. Chem. Geol. 234, 105–126.
    Google ScholarLocate open access versionFindings
  • Xia, Q.-X., Zheng, Y.-F., Zhou, L.-G., 2008. Dehydration and melting during continental collision: constraints from element and isotope geochemistry of low-T/UHP granitic gneiss in the Dabie orogen. Chem. Geol. 247, 36–65.
    Google ScholarLocate open access versionFindings
  • Xie, Z., Zheng, Y.F., Zhao, Z.F., et al., 2006. Mineral isotope evidence for the contemporaneous process of Mesozoic granite emplacement and gneiss metamorphism in the Dabie orogen. Chem. Geol. 231, 214–235.
    Google ScholarLocate open access versionFindings
  • Xu, S.-T., Okay, A.I., Ji, S., et al., 1992. Diamonds from the Dabie Shan metamorphic rocks and its implication for tectonic setting. Science 256, 80–82.
    Google ScholarLocate open access versionFindings
  • Xu, P., Wu, F.Y., Xie, L.W., Yang, Y.H., 2004. Hf isotopic compositions of the standard zircons for U–Pb dating. Chin. Sci. Bull. 49, 1642–1648.
    Google ScholarLocate open access versionFindings
  • Xu, X.-J., Zhao, Z.-F., Zheng, Y.-F., Wei, C.-S., 2005. Element and isotope geochemistry of Mesozoic intermediate-felsic rocks at Tianzhushan in the Dabie orogen. Acta Petrol. Sin. 3, 607–622 (in Chinese with English abstract).
    Google ScholarLocate open access versionFindings
  • Xu, H.-J., Ma, C.-Q., Ye, K., 2007. Early cretaceous granitoids and their implications for the collapse of the Dabie orogen, eastern China: SHRIMP zircon U–Pb dating and geochemistry. Chem. Geol. 240, 238–259.
    Google ScholarLocate open access versionFindings
  • Xu, H.-J., Ye, K., Ma, C.-Q., 2008. Early Cretaceous granitoids in the North Dabie and their tectonic implications: Sr–Nd and zircon Hf isotopic evidences. Acta Petrol. Sin. 24, 87–103 (in Chinese with English abstract).
    Google ScholarLocate open access versionFindings
  • Yuan, H.-L., Gao, S., Dai, M.-N., Zong, C.-L., Günther, D., Fontaine, G.H., Liu, X.-M., Diwu, C., 2008. Simultaneous determinations of U–Pb age, Hf isotopes and trace element compositions of zircon by excimer laser-ablation quadrupole and multiplecollector ICP-MS. Chem. Geol. 247, 100–118.
    Google ScholarLocate open access versionFindings
  • Zeng, L.S., Liang, F.H., Asimow, P., Chen, F.Y., Chen, J., 2009. Partial melting of deeply subducted continental crust and the formation of quartzo-feldspathic polyphase inclusions in the Sulu UHP eclogites. Chin. Sci. Bull. 54, 2580–2594.
    Google ScholarLocate open access versionFindings
  • Zhang, H.F., Gao, S., Zhong, Z., Zhang, B., Zhang, L., Hu, S., 2002. Geochemical and Sr–Nd– Pb isotopic compositions of Cretaceous granitoids: constraints on tectonic framework and crustal structure of the Dabieshan ultrahigh-pressure metamorphic belt. China. Chem. Geol. 186, 281–299.
    Google ScholarLocate open access versionFindings
  • Zhang, J.-J., Zheng, Y.-F., Zhao, Z.-F., 2009. Geochemical evidence for interaction between oceanic crust and lithospheric mantle in the origin of Cenozoic continental basalts in east-central China. Lithos 110, 305–326.
    Google ScholarLocate open access versionFindings
  • Zhang, J., Zhao, Z.-F., Zheng, Y.-F., Dai, M., 2010. Postcollisional magmatism: geochemical constraints on the petrogenesis of Mesozoic granitoids in the Sulu orogen, China. Lithos 119, 512–536.
    Google ScholarLocate open access versionFindings
  • Zhao, Z.-F., Zheng, Y.-F., 2003. Calculation of oxygen isotope fractionation in magmatic rocks. Chem. Geol. 193, 59–80.
    Google ScholarLocate open access versionFindings
  • Zhao, Z.-F., Zheng, Y.-F., 2009. Remelting of subducted continental lithosphere: petrogenesis of Mesozoic magmatic rocks in the Dabie–Sulu orogenic belt. Sci. China (D) 52, 1295–1318.
    Google ScholarLocate open access versionFindings
  • Zhao, Z.-F., Zheng, Y.-F., Wei, C.-S., Wu, Y.-B., 2004. Zircon isotope evidence for recycling of subducted continental crust in post-collisional granitoids from the Dabie terrane in China. Geophys. Res. Lett. 31, L22602. doi:10.1029/2004GL021061.
    Locate open access versionFindings
  • Zhao, Z.-F., Zheng, Y.-F., Wei, C.-S., Wu, Y.-B., Chen, F., Jahn, B.-M., 2005. Zircon U–Pb age, element and C–O isotope geochemistry of post-collisional mafic–ultramafic rocks from the Dabie orogen in east-central China. Lithos 83, 1–28.
    Google ScholarLocate open access versionFindings
  • Zhao, Z.-F., Zheng, Y.-F., Wei, C.-S., Wu, Y.-B., 2007a. Post-collisional granitoids from the Dabie orogen in China: Zircon U–Pb age, element and O isotope evidence for recycling of subducted continental crust. Lithos 93, 248–272.
    Google ScholarLocate open access versionFindings
  • Zhao, Z.-F., Zheng, Y.-F., Chen, R.-X., Xia, Q.-X., Wu, Y.-B., 2007b. Element mobility in mafic and felsic ultrahigh-pressure metamorphic rocks during continental collision. Geochim. Cosmochim. Acta 71, 5244–5266.
    Google ScholarLocate open access versionFindings
  • Zhao, Z.-F., Zheng, Y.-F., Wei, C.-S., Chen, F.-K., Liu, X., Wu, F., 2008. Zircon U–Pb ages, Hf and O isotopes constrain the crustal architecture of the ultrahigh-pressure Dabie orogen in China. Chem. Geol. 253, 222–242.
    Google ScholarLocate open access versionFindings
  • Zheng, Y.-F., 2008. A perspective view on ultrahigh-pressure metamorphism and continental collision in the Dabie–Sulu orogenic belt. Chin. Sci. Bull. 53, 3081–3104.
    Google ScholarLocate open access versionFindings
  • Zheng, Y.-F., 2009. Fluid regime in continental subduction zones: petrological insights from ultrahigh-pressure metamorphic rocks. J. Geo. Soc. London 166, 763–782.
    Google ScholarLocate open access versionFindings
  • Zheng, Y.-F., Fu, B., Gong, B., Li, L., 2003. Stable isotope geochemistry of ultrahigh pressure metamorphic rocks from the Dabie–Sulu orogen in China: implications for geodynamics and fluid regime. Earth Sci. Rev. 62, 105–161.
    Google ScholarLocate open access versionFindings
  • Zheng, Y.-F., Wu, Y.-B., Chen, F.-K., Gong, B., Li, L., Zhao, Z.-F., 2004. Zircon U–Pb and oxygen isotope evidence for a large-scale 18O depletion event in igneous rocks during the Neoproterozoic. Geochim. Cosmochim. Acta 68, 4145–4165.
    Google ScholarLocate open access versionFindings
  • Zheng, Y.-F., Zhou, J.-B., Wu, Y.-B., Xie, Z., 2005a. Low-grade metamorphic rocks in the Dabie–Sulu orogenic belt: a passive-margin accretionary wedge deformed during continent subduction. Int. Geol. Rev. 47, 851–871.
    Google ScholarLocate open access versionFindings
  • Zheng, Y.-F., Wu, Y.-B., Zhao, Z.-F., Zhang, S.-B., Xu, P., Wu, F.-Y., 2005b. Metamorphic effect on zircon Lu–Hf and U–Pb isotope systems in ultrahigh-pressure eclogitefacies metagranite and metabasite. Earth Planet. Sci. Lett. 240, 378–400.
    Google ScholarLocate open access versionFindings
  • Zheng, Y.-F., Zhao, Z.-F., Wu, Y.-B., Zhang, S.-B., Liu, X., Wu, F.-Y., 2006. Zircon U–Pb age, Hf and O isotope constraints on protolith origin of ultrahigh-pressure eclogite and gneiss in the Dabie orogen. Chem. Geol. 231, 135–158.
    Google ScholarLocate open access versionFindings
  • Zheng, Y.-F., Zhang, S.-B., Zhao, Z.-F., Wu, Y.-B., Li, X.H., Li, Z.X., Wu, F.-Y., 2007. Contrasting zircon Hf and O isotopes in the two episodes of Neoproterozoic granitoids in South China: implications for growth and reworking of continental crust. Lithos 96, 127–150.
    Google ScholarLocate open access versionFindings
  • Zheng, Y.-F., Chen, R.-X., Zhao, Z.-F., 2009. Chemical geodynamics of continental subduction-zone metamorphism: insight from studies of the Chinese Scientific Drilling (CCSD) core samples. Tectonophysics 475, 327–358.
    Google ScholarLocate open access versionFindings
  • Zindler, A., Hart, S., 1986. Chemical geodynamics. Annu. Rev. Earth. Planet. Sci. 14, 493–571.
    Google ScholarLocate open access versionFindings
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