破火山口因后来的阵发性爆发而扩大，最终于公元79年一次爆发。
The caldera was enlarged by later paroxysmal eruptions ending in the one of AD 79.
该破火山口被认为是活火山。
山为环形的破火山口洼地环抱着。
The mountain is encircled by the doughnut-shaped depression of the caldera.
论证了大龙湾火山口湖为破火山口。
山为环形的破火山口洼地环抱着。
The mountain is encircled by the doughnut - shaped depression of the caldera.
本文论述了七宝山早白垩世破火山口的特征。
This paper deals with the characteristics of the Qibao-Shan caldera in early Cretaceous.
随着火山爆发形成了多个大火山口（破火山口）。
The eruptions were associated with the development of a number of giant craters (calderas).
在此基础上，提出了石山口破火山口南缘及沿龟梅断裂带两个金、银多金属矿的找矿方向。
Two ore prospecting targets for gold and silver polymetallic deposit on south margin of Shishankou crater and along Guimei fracture zone have been suggested on the basis of the above conclusion.
在此基础上，提出了石山口破火山口南缘及沿龟梅断裂带两个金、银多金属矿的找矿方向。
Two ore prospecting targets for gold and silver polymetallic deposit on south margin of Shishankou crater and along Guimei fracture zone have been suggested on the basis of the above conclusion.
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