Volcanogenic—sedimentary ore deposits are situated at the top of volcanic eruption cycle;
火山沉积型矿床就位于火山喷发旋回顶部；
They mainly belong to effusive facies, explosive facies and volcanogenic sedimentary facies.
其岩相主要为喷溢相、爆发相和火山沉积相。
Volcanogenic massive sulfide deposits occur widely in the ophiolite of the Erlangping Group of the Eastern Qinling Mountains.
东秦岭二郎坪群蛇绿岩中广泛发育火山成因块状硫化物矿床。
The poly metallic deposit occurred in the Erlangping ophiolite of eastern Qinling Mountain was regarded as volcanogenic type.
二郎坪群蛇绿岩中多金属矿床属火山成因块状硫化物矿床。
With three types of volcanogenic clay rocks as examples, the natural gamma logging data are proved to be essential for finding and studying clay strata formed by volcanic events.
例举三种产状的火山成因粘土岩论证用自然伽玛测井资料寻找和研究火山事件粘土岩层的必要和优越性。
With three types of volcanogenic clay rocks as examples, the natural gamma logging data are proved to be essential for finding and studying clay strata formed by volcanic events.
例举三种产状的火山成因粘土岩论证用自然伽玛测井资料寻找和研究火山事件粘土岩层的必要和优越性。
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