Download Sedimentary = Intrusive Igneous = Extrusive Igneous = Sedimentary

Rock & Rock Cycle Review:
1. Are rocks made of minerals or minerals made of rock? ​Rocks are made of minerals
2. Method of Rock Formation:
Questions: How is “this” rock formed? (​ see below)
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Does volume during rock formation affect the type of rock formed? ​No!
Igneous = ​cooling and solidification of magma or lava
Intrusive = ​slow cooling; formation of large crystals
Extrusive = ​fast cooling; formation of s​ mall to No​ crystals
Sedimentary =
● weathering, erosion, sediments in water to cementation of sediments
● components: pieces of rock, minerals, fossils, etc.
● mechanical, chemical or organic processes
Metamorphic = ​heat and/or pressure
3. Rock Characteristics:
Questions: What are the characteristics of each rock type?
​ ow does the formation of extrusive igneous rock differ from that of intrusive igneous rock?
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Intrusive Igneous =
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large-grained crystals
Extrusive Igneous =
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fine-grained crystals or may cool so quickly, no crystals
Glassy surface with sharp edges
Gas bubble
Full of holes and low density (can float in water)
Sedimentary =
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Soft
Could be composed of: Shell, pieces of rock & minerals, fossils, organic matter, sand & pebbles
Loose layers
Metamorphic =
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Crystals in layers
compact layers or “ribbonlike layers”
Fine compact grained
4. Rock Classification based on characteristics
Intrusive Igneous = ​Granite, obsidian
Extrusive Igneous = ​pumice, basalt
Sedimentary = ​Conglomerate, sandstone, limestone
Metamorphic =​ ​Marble, Gneiss, mica, slate
5. The Rock Cycle: Changing rock from one form to another
“Process”
“Outcome Effect”
Weathering & Erosion
Creating of Sediments
Erosion
surface materials removed and transported from
one location to another
Pressure & heat
Makes metamorphic rock
granite to gneiss
Limestone to marble
Melting
creation of magma
Slow cooling & crystallization
Makes intrusive igneous rock
Fast cooling
Makes extrusive igneous rock
Sedimentation
solid material separates out of a liquid, usually
when the liquid evaporates
Compacting and Cementing
formation of a conglomerate