volcanic dome的意思|示意

It formed when a volcanic dome hardened and gradually eroded, exposing the onion-like layers of rock.

它也是在一个火山穹丘硬化和逐步侵蚀中，剥离出洋葱状岩石层形成的。

Although it resembles an impact crater, it formed when a volcanic dome hardened and gradually eroded, exposing the onion-like layers of rock.

尽管它看起来像是一个陨石撞击坑，它是在一个火山穹丘硬化和逐步侵蚀中，剥离出洋葱状岩石层的结果。

Heling large-scale light-earth deposit is controlled by the Hulu-lian volcanic dome, a well-preserved volcanic apparatus in Xunwu county.

寻乌县葫芦火山穹隆是一保存较为完好的火山机构，河岭大型轻稀土矿床受控于该火山机构。