volcanic explosion造句怎么写

The researchers examined Martian meteorites here on Earth to determine that the sulfur and chlorine likely resulted from ancient volcanic explosions.

Kurile Lake was formed 8300-8400 years ago by a large volcanic explosion and a collapse of the Earth crust.

A large crater formed by volcanic explosion or by collapse of a volcanic cone.

In a region bursting with people, a few big open Spaces remain-like the Rift floor in Queen Elizabeth Park, pocked with crater lakes formed by volcanic explosions.