Zircon U-Pb geochronology, geochemistry and petrogenesis of syenogranite from Angeer Yinwula area in Inner Mongolia

doi:10.3969/j.issn.1673-9736.2019.02.02

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Global Geology ›› 2019, Vol. 22 ›› Issue (2) : 78-90. DOI: 10.3969/j.issn.1673-9736.2019.02.02

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Zircon U-Pb geochronology, geochemistry and petrogenesis of syenogranite from Angeer Yinwula area in Inner Mongolia

LIU Hanlun, WANG Keyong, LI Jian, CAI Wenyan, TANG Wenhao, WANG Changhong

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Abstract

The study presents the results of U-Pb dating of zircons and whole-rock geochemical analyses of syenogranite in Angeer Yinwula area, China, with the aim of determining its formation time, petrogenesis and regional setting. Zircon U-Pb data obtained by LA-ICP-MS indicate that the syenogranite formed in the Early Cretaceous (136.1±0.9 Ma). Geochemically, the rock is characterized by high SiO₂ (76.63%-77.58%) and Na₂O+K₂O (8.00%-8.32%), low MgO (0.02%-0.04%) and TFe₂O₃ (0.51%-0.84%), and is enriched in LREEs and LILEs, depleted in HREEs and HFSEs. It belongs to high-K calc-alkaline, metaluminous-weakly peraluminous, exhibiting an affinity to I-type granite. All these characteristics implied that the syenogranite in this region derived from crust-mantle mixed source. Overall, the regional geology, geochronology and geochemical features suggest that the formation of the syenogranite was related to the subduction of the Paleo-Pacific Ocean.

Key words

syenogranite / zircon U-Pb dating / geochemistry / tectonic setting / Angeer Yinwula area / Paleo-Pacific Ocean

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LIU Hanlun, WANG Keyong, LI Jian, CAI Wenyan, TANG Wenhao, WANG Changhong. Zircon U-Pb geochronology, geochemistry and petrogenesis of syenogranite from Angeer Yinwula area in Inner Mongolia[J]. Global Geology. 2019, 22(2): 78-90 https://doi.org/10.3969/j.issn.1673-9736.2019.02.02

References

Belousova E, Griffin W, O'Reilly S Y,et al. 2002. Igneous zircon:trace element composition as an indicator of source rock type.Contributions to Mineralogy and Petrology,143(5):602-622.
Chappell B W. 1999. Aluminum saturation in I-and S-type granites and the characterization of fractionated haplogranites.Lithos,46:535-551.
Chappell B W, White A J R. 1992. I-and S-type granites in the Lachlan Fold Belt.Transactions oftheRoyal Society of Edinburgh:Earth Sciences,83(1/2):1-26.
Chen J Y, Yang J H. 2015. Petrogenesis of the Fogang highly fractionated I-type granitoids:constraints from Nb, Ta, Zr and Hf.Acta Petrologica Sinica,31(3):846-854. (in Chinese with English abstract)
Connelly J N. 2000. Degree of preservation of igneous zonation in zircon as a signpost for concordancy in U/Pb geochronology.Chemical Geology,172(1/2):25-39
Eby G N. 1990. The A-type granitoids:a review of their occurrence and chemical characteristics and speculations on their petrogenesis.Lithos,26:115-134.
Eby G N. 1992. Chemical subdivision of the A-type granitoids:petrogenetic and tectonic implications.Geology,20(7):641-644.
Fan W M, Guo F, Wang Y J,et al. 2003. Late Mesozoic calcal-kaline volcanism of post-orogenic extension in the northern Da Hinggan Mountains, northeastern China.Journal of Volcanology and Geothermal Research,121(1):115-135.
Gill J B. 1987. Early geochemical evolution of an oceanic island arc and backarc:Fiji and the south Fiji Basin.Journal of Geology,95(5):589-615.
Hong D W, Huang H Z, Xiao Y J,et al. 1994. The Permian alkaline granites in central Inner Mongolia and their geodynamic significance.Acta Geologica Sinica,10(3/4), 169-176. (in Chinese with English abstract)
Irvine T N, Baragar W R A. 1971. A guide to the chemical classification of the common volcanic rocks. Canadian Journal of Earth Sciences,8:523-548.
Jahn B M, Capdevila R, Liu D,et al. 2004. Sources of Phanerozoic granitoids in the transect Bayanhongor-Ulaan Baatar, Mongolia:geochemical and Nd isotopic evidence, and implications for Phanerozoic crustal growth.Journal of Asian Earth Sciences,23:629-653.
Jian P, Cheng Y Q, Liu D Y. 2001. Petrographic study on the genesis of metamorphic zircon-the basic basis of the U-Pb age interpretation of high-grade metamorphic rocks.Earth Science Frontiers, (3):183-191.
Ke L L, Zhang H Y, Liu J J,et al. 2017. Fluid inclusion, H-O, S, Pb and noble gas isotope studies of the Aerhada Pb-Zn-Ag deposit, Inner Mongolia, NE China.Ore Geology Reviews,88:304-316.
Lehmann J, Schulmann K, Lexa O,et al. 2000. Structural constraints on the evolution of the Central Asian Orogenic Belt in SW Mongolia.Life Sciences,310:575-628.
Li J, Cai W Y, Fu L J, et al. 2018. Genesis and tectonic setting of the Bulage Pb-Zn deposit, Inner Mongolia, China:evidence from geology, fluid inclusions, EMPA, H-O isotope systematics, zircon U-Pb geochronology, and geochemistry.Geological Journal,DOI:10.1002/gj.3410.
Li J Y. 2006. Permian geodynamic setting of Northeast China and adjacent regions:Closure of the Paleo-Asian Ocean and subduction of the Paleo-Pacific Plate.Journal of Asian Earth Sciences,26:207-224.
Li J Y, Gao L M, Sun G H,et al. 2007. Shuangjingzi Middle Triassic syn-collisional crust-derived granite in the east Inner Mongolia and its constraint on the timing of collision between Siberian and Sino-Korean paleo-plates.Acta Petrologica Sinica,23(3):565-582. (in Chinese with English abstract)
Liu H L, Chen M, Chen P,et al. 2011. Gold and polymetallic metallogenic characteristics and prospecting direction of East Ujimqin Banner in the Great Xing'an. Gold Science and Technology, (2):56-60.
Liu Y S, Gao S, Hu Z C,et al. 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 of mantle xenoliths.Journal of Petrology,51:537-571.
Ludwig K R. 2003. User's manual for Isoplot 3.0:a geochronological toolkit for Microsoft Excel. Berkeley Geochronology Center, 1-70.
Maniar P D, Piccoli P M. 1989. Tectonic discrimination of granitoids.Geological Society of American Bulletin,101:635-643.
Maruyama S, Isozaki Y, Kimura G,et al. 1997. Paleogeographic maps of the Japanese Islands:plate tectonic synthesis from 750 Ma to the present.Island Arc,6:121-142.
Peccerillo A, Taylor D R. 1976. Geochemistry of Eocene calc-alkaline volcanic rocks from the Kastamonu area, northern Turkey.Contributions to Mineralogy and Petrology,58:63-81.
Qiu J S, Xiao E, Hu J,et al. 2008. Petrogenesis of highly fractionated I-type granites in the coastal area of northeastern Fujian Province:constraints from zircon U-Pb geochronology, geochemistry and Nd-Hf isotopes.Acta Petrologica Sinica,24(11):2468-2484. (in Chinese with English abstract)
Sun S S, McDonough W F. 1989. Chemical and isotopic systematics of oceanic basalts:Implications for mantle composition and processes.Geological Society of Special Publication,42:313-345.
Whalen J B, Currie K L, Chappell B W. 1987. A-type granites:geochemical characteristics, discrimination and petrogenesis.Contributions to Mineralogy and Petrology,95:407-419.
Windley B F, Alexeiev D, Xiao W,et al. 2007. Tectonic models for accretion of the Central Asian Orogenic Belt.Geological Society,164(12):31-47
Wu F Y, Jahn B M, Wilde S A,et al. 2000. Phanerozoic crustal growth:U-Pb and Sr-Nd isotopic evidence from the granites in northeastern China.Tectnophysics,328:89-113.
Wu F Y, Jahn B M, Wilde S A,et al. 2003. Highly fractionated I-type granites in NE China (I):geochronology and petrogenesis.Lithos,66:241-273.
Wu F Y, Li X H, Yang J H,et al. 2007. Discussions on the petrogenesis of granites.Acta Petrologica Sinica,23(6):1217-1238. (in Chinese with English abstract)
Wu F Y, Sun D Y, Ge W C,et al. 2011. Geochronology of the Phanerozoic granitoids in northeastern China. J.Asian Earth Science,41:1-30.
Xiao B, Li Q G, Liu S W,et al. 2014. Highly fractionated Late Triassic I-type granites and related molybdenum mineralization in the Qinling orogenic belt:geochemical and U-Pb-Hf and Re-Os isotope constraints.Ore Geology Reviews,56:220-233.
Xiao W J, Shu L S, Gao J,et al. 2008. Continental dynamics of the Central Asian Orogenic Belt and its metallogeny.Xinjiang Geology,26:4-8. (in Chinese with English abstract)
Xu W L, Ji W Q, Pei F P,et al. 2009. Triassic volcanism in eastern Heilongjiang and Jilin provinces, NE China:chronology, geochemistry, and tectonic implications.Journal of Asian Earth Sciences,34:392-402.
Xu W L, Wang F, Pei F P,et al. 2013. Mesozoic tectonic regimes and regional ore-forming background in NE China:Constraints from spatial and temporal variations of Mesozoic volcanic rock associations.Acta Petrologica Sinica,29(2):339-353. (in Chinese with English abstract)
Yang K. 2013. Ore-forming characters and prospecting orientation of metal deposit in the Dong Ujimqin, Inner Mongolia:master's degree thesis. Beijing:China University of Geoscience. (in Chinese with English abstract)
Yang Y F, Chen Y J, Pirajno F,et al. 2015. Evolution of ore fluids in the Donggou giant porphyry Mo system, East Qinling, China, a new type of porphyry Mo deposit:evidence from fluid inclusion and H-O isotope systematics.Ore Geology Reviews,65:148-164.
Yu X Z, Xue C J, Cong L J,et al. 2011. A study of the connection of faults and metallogenic belts between Erenhot region, China and South Gobi, Mongolia.Earth Science Frontiers,18(2):231-241.
Zhang J H, Ge W C, Wu F Y,et al. 2008. Large-scale Early Cretaceous volcanic events in the northern Great Xing'an Range, Northeastern China. Lithos,102(1/2):138-157.
Zhang W Y, Nie F J, Liu S W,et al. 2015. Characteristics and genesis of mineral deposits in East Ujimqin Banner, western segment of the Great Xing'an Mountains, NE China.Journal of Asian Earth Sciences,97:459-471.
Zhao H L, Deng J F, Chen F J,et al. 1998. Petrology of the Mesozoic volcanic rocks and the basin formation in the Northeast China.Geoscience,12(1):56-62. (in Chinese with English abstract)