pyroclasitc rocks

• 火山碎屑岩

pyroclasitc rocks的用法和样例：

例句

1. Dolomite and volcaniclastic rocks of Fengcheng formation are also good reservoirs.
   风城组的白云岩及火山碎屑岩的分布部位也为良好的储层。
2. On the basis of the past schemes, new classifications of pyroclasts and the petrographic as well as the petrogenetic classification of pyroclastic rocks are proposed in this paper.
   中国学者提出的火山碎屑岩分类时间较早，有自己特色，在一定的范围得到了应用。