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Igneous Rocks

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by

Ron Keller

on 24 October 2016

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Transcript of Igneous Rocks

Igneous Rocks
strato (composite)
cindercone
shield
viscosity
pahoehoe
(pah-hoy-hoy)
aa
(ah-ah)
ropey or braided
basaltic lava
granite
andesite
diorite
rhyolite
gabbro
extrusive
magma
intrusive
pumice
obsidian
scoria
cinders and ash
pyroclastic flow
ocean floor
continental crust
plate boundary
coarse grained
fine grained
Mount St. Helens
Mount Hood
Paricutin
Mt. Etna
Mauna Loa
lahar
Vesuvius
Kilauea
hotspot
Pompeii
granitic (felsic)
basaltic (mafic)
andesitic (intermediate)
silica rich
silica poor
Ring of Fire
Half-Dome
(Yosemite National Park)
glassy texture
igneous intrusion
Devils Tower
flood basalts
Deccan Traps
Caldera
collapsed cone
Crater Lake
scoria
welded tuff
Step 1
Determine the background that you would like to use by
Igneous Rocks
The Rock Cycle
Extrusive
Basalt
silica rich
silica poor
Rhyolite
Andesite
Full transcript