Vocalnic activity characterizes extru-sive facies - spurt - deposit facies, which constitutes multi-rhythmic volcanic spurting.
Vocalnic activity characterizes extru-sive facies - spurt - deposit facies, which constitutes multi-rhythmic volcanic spurting.
火山活动具有由喷发相(喷溢亚相)-喷发-沉积相的特点，构成了具多韵律性的火山喷发特征。