Deep-seated structure and gold content of Russia and China contiguous territories |
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| Authors: | VG Khomich YANG Yanchen NG Boriskina YAN Hongquan |
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| Institution: | 1. Far East Geological Institute, FEB of RAS, Vladivostok 690022, Russia
2. College of Earth Sciences, Jilin University, Changchun 130061, China |
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| Abstract: | On the contiguous territories of southeastern Russia and northeastern China, many gold-bearing areas are conjugate in space with the gradient zones of the gravity field. Large gold-ore districts, defining in many respects the metallogenic signature of the region, are located on the joints of differently oriented gradient zones. In the best-studied districts, the Precambrian protrusions, staged distribution of magmatic chambers ( by vertical) above the Mohorovicic discontinuity and restriction to the peripheral parts of intrusive massifs have been recognized. Different-type gold deposits in the studied ore-placer districts and nodes are often located on the areas of joint of the granitoid massifs and subvolcanic bodieswith depressions. Availability of areals of metasomatic alterations of rocks, placers, and ore occurrences of precious metals on such but poorly studied areas can serve as the basis for the revision and detailed forecasting-prospecting works to develop the mineral-raw material base of the region for precious metals. |
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| Keywords: | gradient zone gravity field intrusive massif gold-bearing area gold content |
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