Rocks and Minerals

Rocks and Minerals - o Yosemite National Park o They are...

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Any rock can become any other type of rock If metamorphic or sedimentary rocks melt you get an igneous rock Most oil and gas is found in sedimentary rocks Aphanitic- small crystals Phaneritic- large crystals Feldspar is a silicate found in granite Granite almost always has quartz and feldspar Basalt is mostly olivine and perosine with some feldspar Low viscosity magmas usually have a lot of olivine and perosine Rhyolite is the type of rock you might find at an intrusive volcano o Like Mt. St. Helens or Mt. Etna Sierra Nevada Mountains are all granite
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Unformatted text preview: o Yosemite National Park o They are huge plutons The best place to look at sedimentary rocks is the grand canyon Silica makes the quartz in an igneous rock Hokie stone was born at the bottom of the ocean Gypsum is used in plaster of paris Limestones typically form in warm, tropical climates The Hokie Stone formed when we were close to the equator Oxides have pink pigments Tectonic Stress- what happens when the plates collide or pull apart (typically when they collide)...
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This note was uploaded on 10/03/2011 for the course GEOS 1024 taught by Professor Meschreiber during the Spring '08 term at Virginia Tech.

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