What is metamorphic rock? Marble, slate, diamonds

By |2020-04-16T19:13:12-07:00June 26th, 2017|Geology|0 Comments

What is metamorphic rock? Slate rocks in Cascadilla Gorge, Ithaca, New York Metamorphic rocks form under pressure About 450 million years ago, some of the sedimentary rocks began to transform [...]