Abstract
The characteristics of hosted magmas and their petrogenesis based on electron microprobe determination of trace element contents in zircons were discussed. Trace element geochemistry of zircons indicates that zircons in both gabbro and quartz syenite have two-generations. Zircons of the first generations are crystallized in the magma chamber, whereas those of the second generations are formed in supercooling environment. The former is richer in Zr, but poorer in U, Th, Hf and Y. Quartz diorite porphyrite contains zircons that can be distinguished into the early and late generations. Compared to the late generation, the early generation is richer in Zr but poorer in U, Th, Hf and Y. No conspicuous disruption of zircon evolution has been found in both biotite monzogranite and fine-grained granite. However, the content of zircon in fine-grained granite is higher in U, Th and Y and lower in Zr relative to biotite monzogranite without significant contrast in mass fraction ratio of ZrO2 to HfO2 ratio. Such differences in zircon geochemistry of various intrusive phases and the occurrence of the two zircon generations within a single intrusive phase suggest that these phases of magmas are generated from diverse sources during post-collisional continental extension. These magmas ascend rapidly and cool quickly in a short interval.
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References
Barbarin B. A review of the relationships between granitoid types, their origins and their geodynamic environments[J]. Lithos, 1999, 46(3): 605–626.
Winter J D. An Introduction to Igneous and Metamorphic Petrology [M]. New Jersey: Prince-Hall Inc. 2001.
Pupin J P. Zircon and granite petrology[J]. Contributions to Mineralogy and Petrology, 1980, 73(3): 207–220.
Wang X, Li W X. Typomorphism of the {211}-type zircon[J]. Chinese Science Bulletin (English Edition), 2002, 47(2): 154–158.
Belousova E, Griffin W, O’Reilly S Y, et al. Igneous zircon: trace element composition as an indicator of source rock type[J]. Contrib Mineral Petrol, 2002, 143(5): 602–622.
Wang X. Research on the zircons in granitic complex[A]. Wang D Z, Zhou X M. Petrogenesis and Crustal Evolution of the Mesozoic Volcanic-intrusive Complex from Southeast China [C]. Beijing: Science Press, 2002. (in Chinese)
Watson E B, Harrison T M. Zircon saturation revisited: temperature and compositional effects in a variety of crustal magma types [J]. Earth Planet Sci Lett, 1983, 64(2): 295–304.
Yang H, Gu L X. On morphology of zircon in granitoids from the eastern Tianshan orogenic belt [J]. Jiangsu Geol, 1991, 14(3): 129–134. (in Chinese)
Vavra G. On the kinematics of zircon growth and its petrogenetic significance: a cathodoluminescence study [J]. Contrib Mineral Petrol, 1990, 106(1): 90–99.
Wang X, Kienast J R. Morphology and geochemistry of zircon: a case study on zircon from the microgranitoid enclases[J]. Science in China, Series D, 1999, 42: 544–552.
Poldervaart A. Zircons in rocks. 2. Igneous rocks [J]. Am J Sci, 1956, 254(9): 521–554.
Konzett J, Armstrong R A, Sweeney R J, et al. The timing of MARID metasomatism in the Kaapvaal mantel: An ion probe study of zircons from MARID xenoliths[J]. Earth Planet Sci Lett, 1988, 160(1 – 2): 133–145.
Burton J A, Prim R C, Slichter W P. The distribution of solute in crystals grown from the melt (part. I) [J]. J Chem Phys, 1953, 21(2): 1987–1991.
ZHANG Zun-zhong, GU Lian-xing, WU Chang-zhi, et al. Weiya complex, eastern Tianshan: Single — sourced or diverse-sourced-Evidence from biotite[J]. Geochimica, 2005, 34(4): 328–338. (in Chinese)
Paterson S R, Fowler T K. Extensional pluton-emplacement models: Do they work for large plutonic complexes[J]. Geology, 1993, 21(8): 781–784.
Delaney P T, Pollard D D. Solidification of basaltic magma during flow in a dike[J]. American Journal of Science, 1982, 282(6): 856–885.
Chen Y J, Chen H Y, Zaw K, et al. The geodynamic setting of large-scale metallogenisis in mainland china, exemplified by skarn type gold deposits [J]. Earth Sci Frontiers, 2004, 11(1): 57–83. (in Chinese)
Buck W R. Effect of lithospheric thickness on the formation of high-and low-angle normal faults [J]. Geology, 1993, 21(10): 933–936.
Clemens J D, Mawer C K. Granitic magma transport by fracture propagation [J]. Tectonophysics, 1992, 204(3 – 4): 339–360.
Clemens J D, Petford N, Mawer C K. Ascent mechanisms of granitic magmas: case and consequences [A]. Holness M B. Deformation -enhanced Fluid Transport in the Earth’s Crust and Mantle[C]. London: Chapman and Hall, 1997. 145–172.
Petford N, Kerr R C, Lister J R. Dike transport of granitoid magmas[J]. Geology, 1993, 21(9): 845–848.
Zhang Z R, He S X, Xi X S. Experimental deformation of Wangxiang granite at high temperature and pressure[J]. J Cent South Univ Technol(Natural Science), 1999, 30(3): 221–224. (in Chinese)
Sun Y Z, Wu A X, Li J H. Wave propagation and energy dissipation in viscoelastic granular media[J]. J Cent South Univ Technol(English Edition), 2001, 8(3): 185–188.
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Foundation item: Project(40472042) supported by the National Natural Science Foundation of China; project(2001CB409802) supported by the National Key Fundamental Research and Development Program of China
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Zhang, Zz., Gu, Lx., Wu, Cz. et al. Zircon geochemistry of different intrusive phases of Weiya pluton: implications for magma genesis. J Cent. South Univ. Technol. 12, 472–477 (2005). https://doi.org/10.1007/s11771-005-0185-8
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DOI: https://doi.org/10.1007/s11771-005-0185-8