Igneous, Metamorphic, Sedimentary Rocks. Igneous Rocks Where do Igneous rocks come from? Some of the…

Igneous, Metamorphic, Sedimentary

Rocks

Igneous Rocks

• Where do Igneous rocks come from?• Some of the first rocks• How are they classified?– Where they are from– Texture– Mineral Composition

Extrusive Rock

• Igneous rock formed by lava on the earth’s surface. (Basalt)

http://rds.yahoo.com/_ylt=A0PDoS82Z7dNylsAEe.jzbkF/SIG=123cdkp5i/EXP=1303893942/**http:/meteorites.wustl.edu/id/basalt_0885l.jpg

Intrusive Rock

• Igneous rock formed when magma beneath the earth’s surface hardens. (Granite)

http://rds.yahoo.com/_ylt=A0PDoS6VZ7dNXAYAtDCjzbkF/SIG=12g42npig/EXP=1303894037/**http:/geology.com/rocks/pictures/granite-coarse-grained.jpg

Texture

• Extrusive=Rough or smooth• Intrusive=Rough or coarse (sandpaper)

Mineral Composition

• Different minerals give rock its color• Feldspar (pink)• Hornblende• Mica (light gray)• Quartz (smoky)

http://rds.yahoo.com/_ylt=A0PDoS6VZ7dNXAYAtDCjzbkF/SIG=12g42npig/EXP=1303894037/**http:/geology.com/rocks/pictures/granite-coarse-grained.jpg

Sedimentary Rocks

• What is sediment?• How does it become rock?– Erosion-Depostition-Compaction-Cementation– THIS TAKES A LONG TIME!

http://rds.yahoo.com/_ylt=A0PDoS5LardNeUYAJbijzbkF/SIG=12ik4862e/EXP=1303894731/**http:/gumbopirate.files.wordpress.com/2009/06/sandy-beach.jpg

http://rds.yahoo.com/_ylt=A0PDoS68ardNenAAQ0WjzbkF/SIG=12ihcub2v/EXP=1303894844/**http:/i241.photobucket.com/albums/ff279/Clarklady/leaves6.jpg

3 Main Types of Sedimentary

• Clastic– When pieces of rock squeeze together

http://rds.yahoo.com/_ylt=A0PDoX.Ta7dN9HkAtUujzbkF/SIG=12146q5aa/EXP=1303895059/**http:/www.mrsciguy.com/sciimages/conglom.jpg


• Organic – When dead plants and animals compact together

http://rds.yahoo.com/_ylt=A0PDoS6ibLdNHEMAURyjzbkF/SIG=139jvac5o/EXP=1303895330/**http:/www.xian.cgs.gov.cn/uploadfile/english/uploadfile/200809/20080910100748514.jpg


• Chemical– Minerals dissolve and crystalize

http://rds.yahoo.com/_ylt=A0PDoTEBbbdNE3AADjWjzbkF/SIG=120dd9mj4/EXP=1303895425/**http:/geology.com/rocks/pictures/halite.jpg

Metamorphic Rocks

• Sedimentary or Igneous rock that changes because of heat or pressure

• Classifying these rocks– Foliated– Nonfoliated

http://rds.yahoo.com/_ylt=A0PDoTDgbbdNE3gAEk6jzbkF/SIG=12f08orpo/EXP=1303895648/**http:/www.dkimages.com/discover/previews/1053/70006889.JPG

http://rds.yahoo.com/_ylt=A0PDoTBgbrdNsnEAPaCjzbkF/SIG=13amcrd5l/EXP=1303895776/**http:/jonrinaldiphotography.com/images/galleries/black-and-white/slate-rock-large.jpg

http://rds.yahoo.com/_ylt=A0PDoTCKbrdNMHIAVoqjzbkF/SIG=12i52njdq/EXP=1303895818/**http:/gccweb.gccaz.edu/earthsci/imagearchive/COCONINO_big.jpg

http://rds.yahoo.com/_ylt=A0PDoTD0brdNVXMAYGujzbkF/SIG=12tosp8ad/EXP=1303895924/**http:/hyperphysics.phy-astr.gsu.edu/hbase/Geophys/geopic/quartzite98.jpg

Igneous, Metamorphic, Sedimentary Rocks. Igneous Rocks Where do Igneous rocks come from? Some of the…

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