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Rocks Rocks are a mixture of crystals of one
or more minerals. Rocks help built structures examples:
pyramids› They were used as carving tools
Rock Cycle Rock cycle is the rock types change into
another rock type. 1. compaction and cementation 2.metamorphism 3. melting 4. cooling 5. solidification 6. weathering 7. erosion 8. deposition
Sedimentary Rock
Rock that forms when sediments are compacted and cemented together.
Weathering and erosion
Metamorphic rock Form from heat and pressure
Igneous rock Forms from cooling of magma
Melting and cooling
Composition and Texture
Composition is what the minerals in the rocks are made of
Texture is determined by sizes, shapes, and positions.
Igneous rock Formations
Intrusive- cools beneath the surface Extrusive- forms on the surface
Sedimentary origins Strata is layers that form from
deposition of sediment Clastic forms when rock or mineral
fragments stick together Stratification layering of sedimentary
rock
Textures of Metamorphic Rocks Foliated is when minerals are aligned
Non-foliated is when metamorphic rocks do not appear to have any regular pattern