Unit #2: Rocks, Minerals, and Resources. Rock - a naturally formed solid piece of the Earth ’ s crust composed of a mixture of minerals All rocks have minerals. http://www.youtube.com/watch?v=CvDw07iYaJQ&safe=active. Rocks that contain 1 mineral are called monomineralic.
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What three factors are used to identify igneous rocks?
What processes cause the formations of the following rock types? (Igneous, Metamorphic, Sedimentary)
Where do sediments come from?
Clastic- Fragments of Other Rocks-Grain Size
Evaporties- Sea Water evaplorates leaving behind sediments. (Salt)
Precipitates- Chemical- Solutioning(ions)
Biologic- Plankton, Diatoms
Biologic- Terrestrial– Plants/Trees
Marine- Shells, Coral, Stromatalites
Largest Particles Settle First
Roundest Particles Settle First
The most dense particles settle first.
Large, Round, Dense Sediment
Small, Flat, Lighter Sediment