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Rocks 作者: Mind Map: Rocks

1. sedimentry

1.1. sediment that is deposited over time

1.2. might have multi colored layers

1.3. made from many different rocks and sediments

2. igneous

2.1. igneous rock if forms when magma cools solidifying into rocks

2.2. Extrusive

2.2.1. formed on the surface of the earth

2.3. Intrusive

2.3.1. forms within small pockets beneath the earth’s crust

3. metamorphic

3.1. formed under extreme heat or pressure

3.2. metamorphic rocks start as rocks which are then transformed into different rocks

3.3. either foliated or non foliated depending on their mineral structure and pattern