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23 terms

10 Geology

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dyke
passageway for magma up thru' volcano
vent
exit point for magma in volcano
crater
basin around vent in volcano
White Is
active andesitic cone e.g.
Rangitoto
basaltic shield-shape e.g.
Taupo
big rhyolitic caldera e.g.
limestone
seabed sediments from coral/shells
viscosity
affects the shape of volcanoes
uplift
moves shells up mountains
folds
layers following the same curves
roto
Maori for lake
wai
Maori for water
manga
Maori for stream
puke
Maori for hill
motu
Maori for island
focus
if shallow, major damage
Richter
scale of earthquake strength
V-shape
erosion by water
U-shape
erosion by ice
tilting
strata are no longer horizontal
plate boundaries
seismically active locations
sediments
weathered particles eroded away
obsidian
black volcanic glass