magma
sources of heat: radioactivity geothermal
gradient, friction, convection
heat transfer: conduction, radiation, convection cells, viscosity,
heat flow, coefficient of thermal expansion
Mantle Plumes: "hot spots", hydrothermal vents,pluton
Spatial Relations: intrusive, extrusive, concordant, discordant, differentiation
Magma Chamber processes & features: magma differentiation, fractional crystallization, crystal settling, assimilation, magma mixing, partial melting, chilled zone, stopping, zoned crystals
composition & color
Texture: coarse, fine, phaneritic, aphanitic, amygdule, glassy, porphyry, phenocryst, groundmass, pyroclastic, vesicular, spherulites
Locations: NY Palisades, Mt. St Helens, Stillwater Complex, Bushveld Complex, Idaho Batholith, Kilueha, Craters of the Moon, Emperor Seamounts, Snake River Plain, Yellowstone N.P., East Pacific Rise, Canadian Shield
Classification of intrusive rock bodies: dikes, volcanic necks, sills, laccolith, lopolith, stock, batholith, pegmatites(click here to see a mined out pegmatite), here is picture of New Edddystone Rock, a volcanic neck in fjord in Misty Fjords National Monument.
Crystalline Rocks: granite/rhyolite, diorite/andesite, gabbro/basalt
Fragmental/Pyroclastic rocks: ash/ tuff, lapilli/lapillistone, bombs/volcanic breccia
Other Igneous Rocks: pumice, scoria, obsidian, porphyry
Lava: pahoehoe, aa
Volcano Types: cinder cones, composite/stratovolcano, shield volcano, fissure flows
Here is a link to a picture of Mt. Edgecumbe near Sitka, AK, the southeast most of the Alaskan volcanoes.
