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本文所探讨的铀矿呈层控矿体产于线形火山-沉积洼地的边缘部分,洼地呈近东西向延伸并有许多断距不大的横断层和平移断层。洼地基底由不同年代的花岗岩类构成。基底向南和向东呈平缓台阶式倾伏。火山成因沉积岩层的厚度由100—150m增加到1000m以上。岩系底部为巨砾的砾岩,厚250—300 m,夹有砂岩和细砾岩的薄层。剖面上部为安山-玄武岩、粗面玄武岩、粗面英安岩和粗面熔岩盖层,这些岩石与相应成分的凝灰砂岩和凝灰细砾岩成互层。某些熔岩壳的厚度有几十米,而凝灰岩层的厚度为几米。剖面上部的总厚度达800—900 m。火山成因-沉积岩层为粗面英
The uranium deposit stratabound orebody discussed in this paper is produced in the edge part of linear volcanic-depressions depressions. The depressions are nearly east-west extensional with many transverse faults and translatory faults. The basins of the depression are composed of granites of different ages. Basal south and east showed a gentle step-down dip. The thickness of volcanic sedimentary rocks increases from 100-150 m to over 1000 m. The bottom of the rock series is boulder conglomerate, 250-300 m thick, sandwiched between thin layers of sandstone and fine conglomerate. Upper section of the section is An-basalt, Rough basalt, Rough dacite and Rough cap lava, interbedded with the corresponding components of the tuffaceous and tuffaceous conglomerates. Some lava shells have tens of meters of thickness, while tuff layers have a thickness of a few meters. The total thickness of the upper part of the profile reaches 800-900 m. Volcanic origin - sedimentary rock is rough English