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76 results on '"Xie, Hangqiang"'

58. 2090–2070Ma A-type granitoids in Zanhuang Complex: Further evidence on a Paleoproterozoic rift-related tectonic regime in the Trans-North China Orogen

Author

Du, Lilin, primary, Yang, Chonghui, additional, Wyman, Derek A., additional, Nutman, Allen P., additional, Lu, Zenglong, additional, Song, Huixia, additional, Xie, Hangqiang, additional, Wan, Yusheng, additional, Zhao, Lei, additional, Geng, Yuansheng, additional, and Ren, Liudong, additional

Published
2016
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67. Episodic Paleoproterozoic (∼2.45, ∼1.95 and ∼1.85Ga) mafic magmatism and associated high temperature metamorphism in the Daqingshan area, North China Craton: SHRIMP zircon U–Pb dating and whole-rock geochemistry

Author

Wan, Yusheng, primary, Xu, Zhongyuan, additional, Dong, Chunyan, additional, Nutman, Allen, additional, Ma, Mingzhu, additional, Xie, Hangqiang, additional, Liu, Shoujie, additional, Liu, Dunyi, additional, Wang, Huicu, additional, and Cu, Hang, additional

Published
2013
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74. Palaeoproterozoic episodic magmatism and high-grade metamorphism in the North China Craton: evidence from SHRIMP zircon dating of magmatic suites in the Daqingshan area.

Author

Liu, Shoujie, Dong, Chunyan, Xu, Zhongyuan, Santosh, M., Ma, Mingzhu, Xie, Hangqiang, Liu, Dunyi, and Wan, Yusheng

Subjects
GRANODIORITE, GABBRO, CHARNOCKITE, MAGMATISM, ZIRCON, CRYSTALLIZATION
Abstract

The Daqingshan area in the North China Craton (NCC) incorporates several suites of magmatic intrusives including gabbros, granodiorites, charnockites and syenogranites, which were overprinted by subsequent metamorphic events. In this study, we report detailed morphological and textural characteristics as well as sensitive high resolution ion microprobe (SHRIMP) U-Pb ages of zircons from ten representative samples of the magmatic suites including syenogranites, charnockites and granodiorites. The zircons in these rocks are characterized by typical magmatic crystallization features including elongate prismatic grains with angular to sub-angular faces which are overprinted by a variety of reworked textures indicating strong recrystallization. These structures are terminated by thin and variable metamorphic overgrowths. U-Pb analyses of the zircons reveal multiple tectono-thermal events including magmatic crystallization at 2.30-2.00, 1.96-1.94 and 1.85-1.82 Ga and metamorphic overprint at 1.97-1.94 and 1.87-1.82 Ga. The episodic magmatism and regional metamorphism recorded in our study show a complex sequence of tectonic processes during the early to late Palaeoproterozoic associated with the amalgamation of crustal blocks within the NCC, with the youngest episode of the syenogranites representing regional extension at the end of the final cratonization of the NCC. Copyright © 2012 John Wiley & Sons, Ltd. [ABSTRACT FROM AUTHOR]

Published
2013
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75. Decoding multiple tectonothermal events in zircons from single rock samples: SHRIMP zircon U–Pb data from the late Neoarchean rocks of Daqingshan, North China Craton.

Author

Ma, Mingzhu, Wan, Yusheng, Santosh, M., Xu, Zhongyuan, Xie, Hangqiang, Dong, Chunyan, Liu, Dunyi, and Guo, Chunli

Subjects
PLATE tectonics, ZIRCON, CRATONS, METAMORPHIC rocks, CRYSTALLIZATION, MAGMAS
Abstract

Abstract: A complex sequence of tectonothermal events shaped the Neoarchean–Paleoproterozoic crustal evolution in the North China Craton (NCC). Here we present a systematic SHRIMP zircon U–Pb investigation on a suite of metamorphic rocks from the Hademengou area of Daqingshan within the Khondalite Belt of the Inner Mongolia Suture Zone. We analyzed zircons from two meta-volcanic rocks of the Sanggan “Group” and four meta-igneous rocks of late Neoarchean to early Paleoproterozoic. Zircons from these rocks display typical core–rim or core–mantle–rim structures. The relict magmatic zircons record crystallization ages of ca. 2.5Ga followed by variable Pb loss, showing a range of ages in the concordia up to 2.1Ga. The recrystallized domains of zircons show sector zoning or are composed of inner dark domains, and outer lighter domains. The overgrowth mantles are homogeneous. The recrystallized zircons and overgrowth mantles show similar age data distribution along a concordia from ~2.5 to ~2.1Ga. The overgrowth rims are poorly developed but record ages (1.96–1.84Ga) similar to those displayed by metamorphic zircons in the late Paleoproterozoic “Upper Wulashan Subgroup” as well as the charnockites and UHT granulites reported in previous studies from this region. A meta-syenogranite intruding the Sanggan “Group” and Hypersthene dioritic gneiss contains 1.95Ga magmatic and 1.85Ga metamorphic zircons. Magmatic zircons of the late Neoarchean–early Paleoproterozoic metavolcanic rocks have εHf(t) of 1.2 to 7.0, tDM1(Hf) model ages of 2687 to 2532Ma and tDM2(CC)(Hf) model ages of 2837 to 2559Ma. The recrystallized zircons and mantle domains display Hf isotope composition similar to that of the magmatic domains. Our study is the first report from this region that identifies multiple tectonothermal events ranging from late Neoarchean through early to late Paleoproterozoic from zircons within single rock samples in the NCC. A strong overprint of late Paleoproterozoic metamorphism traced commonly in all the rock units indicates that these rocks were involved in the tectonothermal event associated with the final amalgamation of the NCC. [Copyright &y& Elsevier]

Published
2012
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76. The onset of deep recycling of supracrustal materials at the Paleo-Mesoarchean boundary

Author

Wang, Xiaolei, Tang, Ming, Moyen, Jeff, Wang, Di, Kröner, Alfred, Hawkesworth, Chris, Xia, Xiaoping, Xie, Hangqiang, Anhaeusser, Carl, Hofmann, Axel, Li, Junyong, and Li, Linsen

Abstract

The recycling of supracrustal materials, and in particular hydrated rocks, has a profound impact on mantle composition and thus on the formation of continental crust, because water modifies the physical properties of lithological systems and the mechanisms of partial melting and fractional fractionation. On the modern Earth, plate tectonics offers an efficient mechanism for mass transport from the Earth's surface to its interior, but how far this mechanism dates back in the Earth's history is still uncertain. Here, we use zircon oxygen (O) isotopes to track recycling of supracrustal materials into the magma sources of early Archean igneous suites from the Kaapvaal Craton, southern Africa. The mean δ18O values of zircon from TTG (tonalite–trondhjemite–granodiorite) rocks abruptly increase at the Paleo-Mesoarchean boundary (ca. 3230 million years ago; Ma), from mantle zircon values of 5‰–6‰ to approaching 7.1‰, and this increase occurs in ≤3230 Ma rocks with elevated Dy/Yb ratios. The 18O enrichment is a unique signature of low-temperature water–rock interaction on the Earth's surface. Because the later phase was emplaced into the same crustal level as the older one and TTG magmas would derive from melting processes in the garnet stability field (>40 km depth), we suggest that this evident shift in TTG zircon O isotopic compositions records the onset of recycling of the mafic oceanic crust that underwent seawater hydrothermal alteration at low temperature. The onset of the enhanced recycling of supracrustal materials may also have developed elsewhere in other Archean cratons and reflects a significant change in the tectonic realm during craton formation and stabilization, which may be important processes for the operation of plate tectonics on early Earth.Deep recycling of supracrustal materials and possible operation of plate tectonics started at ca. 3230 million years ago, revealed by zircon oxygen isotopes in southern Africa.

Published
2022
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