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Timing of multiple magma events and duration of the hydrothermal system at the Yu'erya gold deposit, eastern Hebei Province, China: Constraints from U-Pb and Ar-Ar dating
Citation
Zhang, T and Zhang, D and Danyushevsky, LV and Wu, M and Koffi Alexis, N and Liao, Y and Zhang, J, Timing of multiple magma events and duration of the hydrothermal system at the Yu'erya gold deposit, eastern Hebei Province, China: Constraints from U-Pb and Ar-Ar dating, Ore Geology Reviews, 127 Article 103804. ISSN 0169-1368 (2020) [Refereed Article]
Copyright Statement
© 2020 Elsevier B.V. All rights reserved.
DOI: doi:10.1016/j.oregeorev.2020.103804
Abstract
The Yu’erya deposit is a large granite–hosted gold deposit in the eastern Hebei Province classified as an intrusion–related gold system. The Yu’erya complex contains the causative intrusion which was the source of hydrothermal metal-bearing fluids. This composite granite complex contains miarolitic pegmatite(–like) cavities and pegmatite veins. A combination of detailed field observations and U–Pb dating by SHRIMP and LA–ICP–MS is used to document multiple magmatic events which occurred at 210–220, 175–173, 171–170, 167–166 and ∼161 Ma formed the Yu’erya granite complex. The initiation of the hydrothermal system, as determined via Ar–Ar dating, is closely related to the exsolution of a magmatic volatile phase from the G1 granite at ca.176 Ma. The hydrothermal system operated for ∼16 my (176–160 Ma) and produced multiple mineralising events (∼176, 172–168 and 162–160 Ma) linked to emplacement of repeated magma pulses from 175 Ma to 161 Ma. Our results suggest that multiple magmatic–hydrothermal events over a time period of several million years may be a fundamental factor responsible for the enrichment process during formation of intrusion-related gold deposits and thus may be a requirement for forming economic orebodies.
Item Details
Item Type: | Refereed Article |
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Keywords: | geochronology, intrusion–related gold deposit, multiple magmatic–hydrothermal events, Yu’erya gold deposit |
Research Division: | Earth Sciences |
Research Group: | Geology |
Research Field: | Resource geoscience |
Objective Division: | Expanding Knowledge |
Objective Group: | Expanding knowledge |
Objective Field: | Expanding knowledge in the earth sciences |
UTAS Author: | Danyushevsky, LV (Professor Leonid Danyushevsky) |
ID Code: | 144705 |
Year Published: | 2020 |
Funding Support: | Australian Research Council (IH130200004) |
Deposited By: | CODES ARC |
Deposited On: | 2021-06-06 |
Last Modified: | 2021-08-10 |
Downloads: | 0 |
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