火山活动期 meaning in English
phase of volcanic activity
Examples
- The increasing volcanism implies that the regional tectonism became progressively severe from the early stage to late stage of the late carboniferous
自晚石炭世早期到晚期，火山活动期逐渐增长，休眠期逐渐缩短，反映出盆地性质自稳定向活动的转化过程。