ReviewA+B - Interludes A&B Rocks and the Rock Cycle 1. What...

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1. What is a rock? A coherent (solid and cohesive), naturally occurring, aggregate (mixed composition of minerals and materials. Why are there so many different types of rocks? There are different types of rock because they all form in different ways and are made of many materials. How are rocks held together? * What are the differences between clastic, crystalline, and glassy rocks? Clastic – cemented together. Crystalline – interlocked together. Glassy – heat welds them together. 2. What are the 2 main occurrences of rocks? Broken chunks or bedrock. Why is it important to study rock outcrops? It shows the rock in their natural environment during growth. Why do we collect hand samples? So we can analyze them more thoroughly and look at specific composition. What is a thin section and how is it made? A slice of rock very thin that can then be analyzed. What information can we determine from thin sections? They show a different aspect of a chunk of rock and can show different formations otherwise not visible.
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This note was uploaded on 07/30/2008 for the course GEOL 110 taught by Professor Centorbi during the Summer '08 term at Maryland.

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