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Rocks Midterm
n/a
43
Geology
Undergraduate 2
11/03/2009

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Cards

Term
ocean plates
Definition
basalt
warmer means newer means less dense
Term
land plates
Definition
granite
Term
subduction
Definition
andesite (usually pophyritic)
Term
aesthenosphere
Definition
peridotite (partial melt), source of hotspots
Term
wet melt/granitic magma
Definition
as pressure decreases, melting temp increases
Term
melts
Definition
less dense than rock, will rise to surface
Term
basalt
Definition
pillow basalt formed from leakage underwater
Term
magnetic field
Definition
electrons floating in outer core
Term
outer core
Definition
liquid, made of iron nickle
Term
inner core
Definition
solid, made of iron nickle
Term
appalachian mts
Definition
cause by collision margin
Term
volcanic breccia/tuff
Definition
incorporates lithic fragments
Term
rock breakages
Definition
fracture, clevage, crystal growth
Term
porphyritic
Definition
2 step cooling process (andesite, subduction)
Term
bonds
Definition
strongest to weakest (covalent, ionic, van der waal)
Term
silicate tetrahedron
Definition
SiO4 (-4 net charge) in a lot of rocks
Term
Silicate Tetrahedron Bonds
Definition
forms bonds with various cations, electrons
Term
terrestrial planets
Definition
less gas than jovian planets due to heat
Term
OH
Definition
represents water incorporated during subduction
Term
Hawaiian Islands
Definition
varies because hotspots keep land undense, floating
Term
Zones densest to lightest
Definition
Innercore, Outercore, Mantle, Oceanic Crust, Continental Crust
Term
Meteorites
Definition
material similar to solid earth (iron nickle and silica)
Term
low velocity zone
Definition
asthenosphere, seismic waves slow
Term
earth's core
Definition
iron and nickle
Term
juan de fuca
Definition
subduction rate higher than creation (divergent) rate
Term
transform margin
Definition
divergent, moving apart at different rates
Term
yellowstone
Definition
hot spot
Term
viscosity
Definition
resistance of flow
Term
high viscosity
Definition
erupts more violently, creates steeper mountains, felsic
Term
convergent quakes
Definition
deep and shallow
Term
basaltic magma
Definition
found in anything divergent and hotspots
Term
S-Waves
Definition
absorbed by liquid
Term
partial melt
Definition
melted by pressure
Term
plutonic
Definition
rocks cooled underground/ phaneritic
Term
silica content
Definition
how magma and rock is classified
Term
felsic
Definition
lighter, Feldspar and Silica
Term
mafic
Definition
darker, Iron and Magnesium
Term
Metallic minerals
Definition
(hematite) important streak
Term
columbia plateau
Definition
made of basalt
Term
mudflows
Definition
hazard of mt rainier
Term
magma crystallizes
Definition
felsic
Term
sulfates
Definition
lead, copper, etc.
Term
oxides
Definition
iron
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