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کنگره و نمایشگاه بین المللی معدن
جزئیات رویداد
همایش ، رویداد ، ژورنال
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  • gold-copperporphyry and low-sulfidation goldbearing system of bolnisi mining district

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    • تاریخ ارائه: 1389/07/20
    • تاریخ انتشار در تی پی بین: 1389/07/20
    • تعداد بازدید: 511
    • تعداد پرسش و پاسخ ها: 0
    • شماره تماس دبیرخانه رویداد: -
     the system is included in the tethyan-eurasian metallogenic belt. the belt spreads from the lesser caucasus to turkish pontides, via black sea continues to bulgarian srednegorie, till banat and carpathian apuseni and consists of well known copper-porphyry deposits murgul, cheratepe, chelopech, medet, elshitsa, bor, maidapek and baye mare. bolnisi mining district consists of two clusters separated by regional fault. the deposits are composed by two zones of mineralization. the high sulphidation zone represent goldcopperporphyry and goldbearing polymetallic mineralization, it is overlain by low sulfidation goldbearing mineralization in quartz-chalcedony and quartz-barite veins and stockworks. the generation of late cretaceous volcanics and mineralization is related to island-arc volcanic activity above the subductive slab in the late subduction and syncollision situation. the hinge retreat and slab detachment caused enrichment of the late cretaceous magma with depleted mantle material and appearance the org and wpg trends in volcanics. the slab retreat was the reason the transtensional block faulting and subsidence, and thus to preservation of near surface magmatic hydrothermal products. so, submerged nw block contained younger cluster of mineralization (80-81ma), whereas uplifted se block – older cluster (88-89 ma). the younger cluster of mineralization in the se block must be eroded.

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