Contributions of secular changes in the regional evolution of ore deposits to predictive mineral exploration: A case study of the Zhongtiao Mountain Cu metallogenic area,southern North China Craton |
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| Affiliation: | 1. School of the Earth Sciences and Resources, China University of Geosciences (Beijing), Beijing 100083, China;2. Institute of Land Resources and High Techniques, China University of Geosciences (Beijing), Beijing 100083, China;3. The Beijing Key Laboratory of Development and Research for Land Resources Information, China University of Geosciences, Beijing 100083, China;4. Institute of Water Resources and Hydropower, Wuhan University, Wuhan 430072, China;1. Department of Conservative Dentistry and Periodontology, Medical University of Vienna, Austria;2. Austrian Cluster for Tissue Regeneration, Austria;3. Department of Oral Surgery, Medical University of Vienna, Austria;4. Laboratory of Oral Cell Biology, School of Dental Medicine, University of Bern, Switzerland;1. Mineral and Vitamin Nutrition Laboratory, Center of Advanced Faculty Training in Animal Nutrition, Indian Veterinary Research Institute, Izatnagar 243 122, India;2. Division of Biological Products, Indian Veterinary Research Institute, Izatnagar 243122, UP, India;1. National Astronomical Observatory of Japan/RISE Project, 2-12, Hoshigaoka, Mizusawa, Iwate 023-0861, Japan;2. Osaka University, 1-1, Yamadaoka, Suita-shi, Osaka 565-0871, Japan;1. Industrial Technologies Research Center – CRTI, P.O. Box 64, Cheraga, 16014 Algiers, Algeria;2. Department of Physics, Badji Mokhtar University UBM, Annaba, Algeria |
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| Abstract: | The Zhongtiao Mountain is located in the southern part of the North China Craton. The area experienced multi-stage tectono-magmatic events during the Precambrian, including Neoarchean-Early Paleoproterozoic (2550–2350 Ma) crustal growth, Paleoproterozoic (2350–1850 Ma) rifting–subduction–accretion–collision, and Early Mesoproterozoic (1800–1750 Ma) extension. The geological events contributed to a major copper mineral system in the region. Here we evaluate the processes of the mineral system, such as the source of metals, migration pathways, the formation of trap zones, and the deposition of metal in an attempt to establish a mineral accumulation evaluation model for regional ore prospecting. A three-step process has been proposed in this study as follows. (i) Determining the spatial and temporal distribution of the essential elements and processes of the mineral system to understand the most critical ore-controlling factors. (ii) Translating the ore-forming processes into mappable features and quantitative extraction of the information on mineralization using Geographic Information System (GIS) technology to establish a mineral accumulation evaluation model. They were treated as evidence layers for weight-of-evidence (WofE) analysis. (iii) Utilizing the weighted values of the evidence layers to create a posterior probability map. Based on the posterior probabilities, four mineral accumulation horizons were finally delineated for the Zhongtiao Mountain, which are considered to provide important guidelines for further ore exploration and study. |
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| Keywords: | Zhongtiao Mountain Major geological events Mineral system Ore-controlling factors Mineral accumulation evaluation model Mineral exploration targets |
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