which means a really massive volcano that has a huge explosive force. ISLA: Oh this is the Scottish Parliament. Look at this wall Connor - it includes the three different types of rock ...

"The passengers are solid chunks of wall rocks that carry a wealth of details on conditions far beneath the surface of our planet over time." Kimberlite is a diamond-bearing volcanic rock ...

While it’s made of the same type of rock as the gorge’s ... but they didn't know it was a volcano. We now know that Beacon Rock was a cinder cone volcano that grew here inside of the gorge ...

Within Oregon, the High Cascades, whose volcanic rocks date back 8 million years ... Deep-permeating waters could affect the types of volcanism observed in the region. When water comes in contact ...