Discovery and Origin of Mafic Microgranular Enclaves of the Dulunhe Magma Mixing Granite in West Junggar

DUAN Fenghao; LI Yongjun; WANG Ran; ZHANG Shenglong; JI Zhengbao

Northwestern Geology > 2015 > 48(2): 10-16.

DUAN Fenghao, LI Yongjun, WANG Ran, et al. Discovery and Origin of Mafic Microgranular Enclaves of the Dulunhe Magma Mixing Granite in West Junggar[J]. Northwestern Geology, 2015, 48(2): 10-16.

Citation:

DUAN Fenghao, LI Yongjun, WANG Ran, et al. Discovery and Origin of Mafic Microgranular Enclaves of the Dulunhe Magma Mixing Granite in West Junggar[J]. Northwestern Geology, 2015, 48(2): 10-16.

Citation:

DUAN Fenghao, LI Yongjun, WANG Ran, et al. Discovery and Origin of Mafic Microgranular Enclaves of the Dulunhe Magma Mixing Granite in West Junggar[J]. Northwestern Geology, 2015, 48(2): 10-16.

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Discovery and Origin of Mafic Microgranular Enclaves of the Dulunhe Magma Mixing Granite in West Junggar

1.
School of Earth Science and Resources, Chang'an University, Xi'an 710054, Shaanxi, China
2.
No.7 Geological Survey Party, Xinjiang Bureau of Geology and Mineral Resources Exploration, Wusu 833000, Xinjiang, China

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Received Date: December 01, 2014
Revised Date: March 11, 2015
Published Date: June 04, 2015

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Abstract

Abstract

As a result of intensive magmatic activity in Neopaleozoic, large amount of intrusive granites exposed along the Daerbute fault in the center of western Junggar. Many researches have been conducted with the batholites, few focused on the small granite intrusions which mainly distributed in porphyry mineralization belt of the Baogutu region. Dulunhe granite is located in Kuoyitasi area of Zhayi'er Mountain, and its host rock mainly consists of medium-grain quartz diorite, medium-coarse granodiorite and medium-coarse biotite granodiorite. Abundant mafic microgranular enclaves can be found in the host rocks.Field distribution and petrology features of mafic enclave suggest that the Dulunhe granite is resulted from mixing of hyperthermal mantle-derived basic magma and crustal acid magma of relatively lower temperature, which provides important evidence for the origin of Dulunhe granite and crust-mantle magma migmatization in the study area, and also has great regional significance for the studies of the genetic type and diversity of the granite in west Junggar.
- mafic microgranular enclave,
- magma mixing,
- granitoid,
- Dulunhe,
- west Junggar

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Discovery and Origin of Mafic Microgranular Enclaves of the Dulunhe Magma Mixing Granite in West Junggar

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