Geog. 105 notes

Geog. 105 notes - o Some clastic types deposited by wind...

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1.30.08 Minerals **Oxygen ions are very large Silicon + 4 Oxygen = quartz o Does not have cleavage points Will shatter into many pieces if hit with a hammer Most important non-silicate rock-forming minerals are the carbonates, of which calcite (CaCO 3 ) is most important o Very common. White powder as residue from boiling water o Dissolved easily in acid solution Limestone Marble Rocks -Rocks are aggregates of minerals Igneous (volcanic) o Derived from molten rock Both crystalline and clastic o “Magma” when in volcano o “Lava” once out Sedimentary o Clastic and crystalline rock types most commonly deposited in or by water
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Unformatted text preview: o Some clastic types deposited by wind Metamorphic o Rocks under high temperatures and pressures in deep crust and upper mantle Two major rock textures o Crystalline o Clastic Fragmental Volcanoes o Shield (Hawaii) Low-sloping o Stratovolcano High sloping Mt. Fuji o Plug dome Mt. St. Helens o Cinder cone Lava o The viscosity of magma is related to its SiO2 content o The greater the SiO2 content, the greater the linkage to less explosive?...
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