Igneous Rock is rock that is formed from molten (melted) material

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Presentation transcript:

Igneous Rock is rock that is formed from molten (melted) material

To classify (name) them you must know: What minerals do they contain How large are the crystals Intrusive: rock that cools and hardens under the earth's surface Large crystals Extrusive: rock that cools and hardens on the earth's surface Small crystals

Igneous Rock

Sedimentary Rock Rock that is formed from sediments that are compacted and cemented together Classification 1. Clastic (detrital): made of fragments of previous rock Classified by size and shape of fragments 2. Biochemical or Organic: rock formed from once living material (fossils) 3. Chemical: formed from minerals left behind when water dries up

Rock Review http://www.fi.edu/fellows/fellow1/oct98/create/sediment.htm

Sedimentary Rock

Metamorphic Rocks Rocks that have changed due to heat and pressure Classification: according to arrangement of grains that make up rock Foliated: bands, rock has a striped look Nonfoliated: no bands or stripes seen

Metamorphic Rock

Quiz

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