Home > Archive>Volume 93, Issue 5, 2019 >1500-1521. DOI:10.1111/1755-6724.14391
PDF HTML XML Export Cite reminder
Geochronology and Geochemistry of Early Cretaceous Granitic Plutons in the Xing’an Massif, Great Xing’an Range, NE China: Petrogenesis and Tectonic Implications
CSTR:
[cstr]
Author:
Fund Project:

We thank Yang J.H. and Yang Y.H. for advice and assistance during in situ zircon U-Pb-Hf isotope analyses in the Institute of Geology and Geophysics, Chinese Academy of Sciences (Beijing), China. We appreciate the State Key Laboratory of Continental Dynamics, Northwest University, China, for their assistance in zircon U-Pb dating and whole-rock geochemical analyses. We thank the Beijing Research Institute of Uranium Geology, China for their assistance in whole-rock geochemical analyses. This study was financially supported by the National Key R&D program of China (2016YFC0600403).

  • Article
    • | |
  • Metrics
    • |
  • Reference
    • |
  • Related
    • |
  • Cited by
    • | |
  • Comments
    Abstract:

    In this study, we present zircon U-Pb ages, whole-rock geochemical data and Hf isotopic compositions for the Meiguifeng and Arxan plutons in Xing’an Massif, Great Xing’an Range, which can provide important information in deciphering both Mesozoic magmatism and tectonic evolution of NE China. The zircon U-Pb dating results indicate that alkali feldspar granite from Meiguifeng pluton was emplaced at ~145 to 137 Ma, and granite porphyry of Arxan pluton was formed at ~129 Ma. The Meiguifeng and Arxan plutons have similar geochemical features, which are characterized by high silica, total alkalis, differentiation index, with low P2O5, CaO, MgO, TFe2O3 contents. They belong to high-K calc-alkaline series, and show weakly peraluminous characteristics. The Meiguifeng and Arxan plutons are both enriched in LREEs and LILEs (e.g., Rb, Th, U and K), and depleted in HREEs and HFSEs (e.g., Nb, Ta and Ti). Combined with the petrological and geochemical features, the Meiguifeng and Arxan plutons show highly fractionated I-type granite affinity. Moreover, the Meiguifeng and Arxan plutons may share a common or similar magma source, and they were probably generated by partial melting of Neoproterozoic high-K basaltic crust. Meanwhile, plagioclase, K-feldspar, biotite, apatite, monazite, allanite and Ti-bearing phases fractionated from the magma during formation of Meiguifeng and Arxan plutons. Combined with spatial distribution and temporal evolution, we assume that the generation of Early Cretaceous Meiguifeng and Arxan plutons in Great Xing’an Range was closely related to the break-off of Mudanjiang oceanic plate. Furthermore, the Mudanjiang Ocean was probably a branch of Paleo-Pacific Ocean.

    Reference
    Related
    Cited by
Get Citation

DONG Yu, GE Wenchun, TIAN Dexin, JI Zheng, YANG Hao, BI Junhui, WU Haoran, HAO Yujie.2019. Geochronology and Geochemistry of Early Cretaceous Granitic Plutons in the Xing’an Massif, Great Xing’an Range, NE China: Petrogenesis and Tectonic Implications[J]. Acta Geologica Sinica(),93(5):1500-1521

Copy
Share
Article Metrics
  • Abstract:
  • PDF:
  • HTML:
  • Cited by:
History
  • Received:May 15,2019
  • Revised:August 14,2019
  • Online: October 29,2019
Article QR Code
You are the Visitors
Governing Body：China Association for Science and Technology
Organizer：Geological Society of China
Address：No. 26 Baiwanzhuang Street, Xicheng District, Beijing 100037, China
Phone：010-68999024

京公网安备 11000002000088号 | 京ICP备11041704号
® 2025 All Rights Reserved