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Pb Isotopic Composition of the Ore Deposits Distributed in Jeonbuk Province  

Chung Jae-Il (Department of Earth and Environmental Sciences, Chonbuk National University)
Park Kye-Hun (Department of Environmental Geosciences, Pukyong National University)
Publication Information
The Journal of the Petrological Society of Korea / v.15, no.2, 2006 , pp. 81-89 More about this Journal
Abstract
Pb isotopic compositions were determined from the ore deposits of Beonam, Dongjin, Jeoksang and Bukchang mines distributed within Jeolabuk-do. As a result, individual mine shows significantly different values of Pb isotopic compositions from each other. Pb isotopic values of the Beonam, Bukchang and Dongjin mines altogether from linear variation, but it is too steep to represent their formation age. Instead, such trend suggests that these ore leads were originated from binary mixing. Precambrian basement rocks and Mesozoic granitoids are suggested for such two end-members. The relative contribution of lead from each source seems to be quite different for each ore deposit, implying that the circulation of the ore-forming fluid was very localized when they were formed. In the case of Dongjin mine it seems significant portion of the ore leads were originated from the basement rocks, which suggests that related igneous rock seems to have acted as heat source to generate circulation of the fluid rather than the source of the ore-forming elements.
Keywords
Pb isotope; ore deposit; galena; crust; Jeolabuk-do;
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Times Cited By KSCI : 3  (Citation Analysis)
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