dacite liparite

例句：

1. 1. The dacite formation is a unique geological feature in the area.
   这种火山灰岩的形成是该地区独特的地质特征。
2. 2. The dacite layer is rich in minerals and has been used for many purposes.
   这种火山灰岩层富含矿物质，被用于许多用途。
3. 3. Dacite is a type of volcanic rock that is formed from the ash and gases released during a volcanic eruption.
   火山灰岩是一种由火山喷发时释放的灰烬和气体形成的火山岩类型。