岩浆库
- 网络Magma chamber
岩浆库-
这种岩石源自火山底下的岩浆库。
This rock type originates in the magma chambers that underlie volcanoes .
-
它们沉到岩浆库的底部，因此，剩馀的岩浆富含矽和铝，石英安山岩即从中生成。
They settle to the bottom of the chamber , leaving the remaining magma enriched in silica and aluminum - from which dacites emerge .
-
随著岩浆的化学演进，从火山山峰下的岩浆库退去，造成地面塌陷，并促成了侧边的爆发。
As the magma evolved chemically , it withdrew from the chamber underneath the summit , causing the ground there to collapse and feeding eruptions on the flanks .