Geochronology and Geodynamic Setting of the Shuangmiaoguan Gold Deposit, Dabie Orogen

QIN Zhijun; WANG Xingwei; ZHOU Bao; LIU Jia; DU Wenyang; ZENG Xiaohua; LI Aobing; ZHANG Weikang

doi:10.12401/j.nwg.2023125

2024 Vol. 57, No. 1

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Article navigation > Northwestern Geology > 2024 > 57(1): 207-218

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QIN Zhijun, WANG Xingwei, ZHOU Bao, LIU Jia, DU Wenyang, ZENG Xiaohua, LI Aobing, ZHANG Weikang. 2024. Geochronology and Geodynamic Setting of the Shuangmiaoguan Gold Deposit, Dabie Orogen. Northwestern Geology, 57(1): 207-218. doi: 10.12401/j.nwg.2023125

Citation:

QIN Zhijun, WANG Xingwei, ZHOU Bao, LIU Jia, DU Wenyang, ZENG Xiaohua, LI Aobing, ZHANG Weikang. 2024. Geochronology and Geodynamic Setting of the Shuangmiaoguan Gold Deposit, Dabie Orogen. Northwestern Geology, 57(1): 207-218. doi: 10.12401/j.nwg.2023125

Geochronology and Geodynamic Setting of the Shuangmiaoguan Gold Deposit, Dabie Orogen

1.
Hubei Geological Survey, Wuhan 430034, Hubei, China
2.
Hubei Research Center of Geological Exploration and Engineering Technology, Wuhan 430034, Hubei, China
3.
School of Earth Resources, China University of Geosciences,Wuhan 430074, Hubei, China

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Corresponding author: WANG Xingwei, xwwang142857@163.com

Received Date: 10 December 2022

Revised Date: 15 October 2023

Publish Date: 20 February 2024

Abstract

Abstract

The Shuangmiaoguan gold deposit from the Macheng City, Hubei Province is in the Dabie orogenic belt. Significant prospecting progress for this gold deposit has been achieved in recent years. However, the ore−forming age and geodynamic setting of this deposit remain unclear. The Neoproterozoic gneissic monzogranite and meta−gabbro are pervasive in the mining area. Eleven gold orebodies have been discovered in the NE, NNE and NNW−trending faults. The field investigations show that the intrusions of K−feldspar granite and granite porphyry in the north of Shuangmiaoguan gold deposit were cut by NE−trending ore−bearing faults, and the diorite dikes from the middle section of gold deposit interpenetrate across the ore bodies.suggests. Zircon U−Pb ages of the K−feldspar granite, granitic porphyry and diorite dikes are (133.6±1.1) Ma, (127.9±1.6) Ma and (126.6±1.3) Ma, respectively. Additionallly, field investigations show that the intrusions of K−feldspar granite and granite porphyry in the north of Shuangmiaoguan gold deposit were cut by ore−bearing faults, and the diorite dikes from the middle section of gold deposit interpenetrate across the ore bodies. This suggests that the Shuangmiaoguan gold deposit should be formed between 128 and 126 Ma. This time is broadly similar to that time of gold mineralization of the Xiaoqinling, Xiong’ershan and Tongbai gold districts. These deposits were coeval with the early Cretaceous widespread gold mineralization. They should be the result of tectonism and Magmatism arised from lithosphere destruction in the eastern China.
- Shuangmiaoguan /
- gold deposit /
- Dabie orogenic belt /
- metallogenic epoch /
- lithospheric destruction

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References

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