001_2012.02.16_ig_rx_volcanoes

001_2012.02.16_ig_rx_volcanoes - Magma Differentiation...

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2/16/2012 1 GEOS 100 – Fundamentals of Geology Thursday, 16 February 2012 Announcements: Reading Quiz 4 due 21 February Lab 4 due this week Exam 1 due 7:00 pm today What is the earth made of? How do earth materials change from one type to another through the Rock Cycle? How are rocks and minerals classified? Felsic Mafic Intermediate Ultramafic Aphanitic Phaneritic Glassy Vesicular Pyroclastic Rhyolite Granite Pumice Obsidian Tuff Gabbro Basalt Andesite Diorite Peridotite Scoria COMPOSITION TEXTURE Classification of Igneous Rocks
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2/16/2012 2 Which of the rocks shown below is mafic? Rock A Rock B 88% 12% 1. Rock A 2. Rock B Rock A Rock B Which of the rocks shown below is phaneritic? 1 2 89% 11% 1. Rock A 2. Rock B Rock A Rock B
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2/16/2012 3 Which of the rocks shown below is basalt? 1 2 6% 94% 1. Rock A 2. Rock B Rock A Rock B Which of the rocks shown below is volcanic? 1 2 67% 33% 1. Rock A 2. Rock B Rock A Rock B
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2/16/2012 4 Wicander and Monroe (2009) – Essentials of Physical Geology, 5 th ed. Igneous Rock Bodies
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Unformatted text preview: Magma Differentiation 2/16/2012 5 Bowens Reaction Series Magma Differentiation 2/16/2012 6 Pikes Peak Batholith, Manitou Springs, Colorado Pikes Peak Batholith, Manitou Springs, Colorado 2/16/2012 7 Idaho Batholith Basalt Dike cutting across Granite of Idaho Batholith near Lucky Peak Reservoir 2/16/2012 8 Basalt lava flows, Snake River Plain, Idaho Columnar Basalt, SW Idaho 2/16/2012 9 Hells Half-Acre Lava Field Along I-15 near Bingham, ID Pahoehoe lava flows, HawaiI, HI 2/16/2012 10 Aa lava flow, Hawaii, HI Thurston Lava Tube, Hawaii Volcanoes NP 2/16/2012 11 Hells Half-Acre Lava Field Along I-15 near Bingham, ID Fissure Eruption Hawaii 2/16/2012 12 Shield Volcano Mauna Loa, Hawaii Mt. Everest: 29,035 ft. Mauna Loa: 11,235 ft. 2/16/2012 13 Mt. Everest: 29,035 ft. Mauna Loa: 55,756 ft. 2/16/2012 14 Volcanic Ash Cloud Eastern Washington, 1980 (National Geographic) Composite Volcano (Stratovolcano) Mt. St. Helens, WA 2/16/2012 15...
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001_2012.02.16_ig_rx_volcanoes - Magma Differentiation...

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