-hows where do a diff. textures form 6 Glassy texture 3 Vesicular texture - very rapid cooling Choles from gas bubbles)
6 Non-welded tuff
- volcanic agh.
Five grained rocks - rapid cooling
at a shallow depth 3 Welded toft
- 2 Porphyritic rock
(2 grain sizes) -rock cools at a diff. locations within
@ Pegmatite Chuge crystals)
routes * slow cooling of the magna
If you want to learn more check out What is the use of histograms?
u stages for forming a caldera caldera: central depression created by
a volcanic eruption - Sketch, label, explains I stages
magma rises pools,
becomes more felsic
Magma reaches surface, fissure eruptions begin
3 Major emption! -Pyroclastic flows and cription Column form
Columns We also discuss several other topics like What is the meaning of bracts?
9 Roof collapse and doming occurs
felsic magna Don't forget about the age old question of What are the examples of reputable nonprofit organizations?
Levels of layers cooled magna chamber = granite 6 going ↑'
pyroclastic flow deposits & welded tuff @ ash from eruption column wow-welded tuff 3
Sketch, label, & describe a cross section We also discuss several other topics like What is the meaning of the fight-or-flight system?
Mt. Rainier, a composite volcano
core lava flows, ash, mud flows
Pt. 2 Sketch, label, + describe plate tectonics setting
m. lith. asthen.
melting due to a
. -mudflow deposits
- lava flow, pyroclastic flow