Zircon U-Pb age and Lu-Hf isotope characteristics of the granitic augen gneiss from the Longquanguan shear zone, and their geological significance

被引：0

作者：

Wang M. ^{[1
,2
]}

Qian J. ^{[3
]}

Zhang J. ^{[2
]}

Zhang B. ^{[2
]}

机构：

[1] School of Earth Science and Resources, Chang'an University, Xi'an

[2] School of Earth and Space Sciences, Peking University, Beijing

[3] School of Earth Sciences and Engineering, Sun Yat-sen University, Guangzhou

来源：

Earth Science Frontiers | 2019年 / 26卷 / 03期

关键词：

Hf isotope; Longquanguan shear zone; North China Craton; Zircon U-Pb age;

D O I：

10.13745/j.esf.sf.2018.12.12

中图分类号：

学科分类号：

摘要：

The Hengshan-Wutai-Fuping area, located in the middle part of the Trans-North China Orogen with large outcrop of Precambrian rocks, is becoming an ideal place to reveal the early-phase evolutionary history of the North China Craton. The Longquanguan shear zone situated in the junction area of the Wutai and Fuping Complex, and the main rock types are granitic augen gneiss and amphibolite. We conducted LA-ICP-MS zircon U-Pb dating and Lu-Hf isotope analysis for the granitic aguen gneiss from the Longquanguan shear zone. The protolith of the Longquanguan granitic aguen gneiss was crystallized at 2547±7 Ma, with εHf(t) values from +2.7 to +9.2, indicating that the rocks were derived from relatively juvenile continental crust with similar features of the late Archean granitic rocks from the Wutai complex. According to the two-stage Hf model, the zircon ages from the Longquanguan granitic augen gneiss varied from 2872 to 2477 Ma and peaked at 2.58 Ga, 2.71 Ga and 2.81 Ga, coinciding with the Neoarchean continental crustal growth events of the North China Craton. © 2019, Editorial Office of Earth Science Frontiers. All right reserved.

引用

页码：171 / 182

页数：11

共 42 条

[1]

Liu S.W., Pan Y.M., Xie Q.L., Et al., Archean geodynamics in the Central Zone, North China Craton: constraints from geochemistry of two contrasting series of granitoids in the Fuping and Wutai Complexs, Precambrian Research, 130, pp. 229-249, (2004)

[2]

Liu S.W., Zhao G.C., Wilde S.A., Et al., Th-U-Pb monazite geochronology of the Lüliang and Wutai Complexes: constraints on the tectonothermal evolution of the Trans-North China Orogen, Precambrian Research, 148, pp. 205-224, (2006)

[3]

Qian J.H., Wei C.J., Zhou X.W., Et al., Metamorphic p-T paths and new zircon U-Pb age data for garnet-mica schist from the Wutai Group, North China Craton, Precambrian Research, 233, pp. 282-296, (2013)

[4]

Qian J.H., Wei C.J., Clarke L.G., Et al., Metamorphic evolution and Zircon ages of Garnet-orthoamphibole rocks in southern Hengshan, North China Craton: insights into the regional Paleoproterozoic p-T-t history, Precambrian Research, 256, pp. 223-240, (2015)

[5]

Qian J.H., Wei C.J., Yin C.Q., Paleoproterozoic p-T-t evolution in the Hengshan-Wutai-Fuping area, North China Craton: evidence from petrological and geochronological data, Precambrian Research, 303, pp. 91-104, (2017)

[6]

Wilde S.A., Cawood P.A., Wang K.Y., Et al., Determining Precambrian crustal evolution in China: a case-study from Wutaishan, Shanxi Province, demonstrating the application of precise SHRIMP U-Pb geochronology, Geological Society of London, Specical Publications, 226, pp. 5-25, (2004)

[7]

Zhai M.G., Liu W.J., Palaeoproterozoic tectonic history of the North China Craton: a review, Precambrian Research, 122, 1-4, pp. 183-199, (2003)

[8]

Zhai M.G., Precambrian tectonic evolution of the North China Craton, Geological Society of London, Special Publications, 226, pp. 57-72, (2004)

[9]

Zhao G.C., Sun M., Wilde S.A., Et al., Late Archean to Paleoproterozoic evolution of the North China Craton: key issues revisited, Precambrian Research, 136, pp. 177-202, (2005)

[10]

Zhao G.C., Wilde S.A., Cawood P.A., Et al., SHRIMP U-Pb zircon ages of the Fuping Complex: implications for Late Archean to Paleoproterozoic accretion and assembly of the North China Craton, American Journal of Science, 302, pp. 191-226, (2002)

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