Impact craters generally have a rim with ejecta around them, in contrast volcanic craters usually do not have a rim or ejecta deposits.
Sometimes craters will display layers.
Since the collision that produces a crater is like a powerful explosion, rocks from deep underground are tossed unto the surface.
Hence, craters can show us what lies deep under the surface.
Impact craters generally have a rim with ejecta around them, in contrast volcanic craters usually do not have a rim or ejecta deposits. Sometimes craters will display layers. Since the collision that produces a crater is like a powerful explosion, rocks from deep underground are tossed unto the surface. Hence, craters can show us what lies deep under the surface.
Iapygia quadrangle