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LSU / Engineering / GEOL 1001 / What are the four stages for forming a caldera?

What are the four stages for forming a caldera?

What are the four stages for forming a caldera?

Description

School: Louisiana State University
Department: Engineering
Course: Geology I
Professor: J. lorenzo
Term: Fall 2016
Tags: Geology and geology1001
Cost: 25
Name: Geology 1001 Weeks 5-7
Description: These notes cover sketches from chapters 5 and 6.
Uploaded: 10/09/2017
4 Pages 41 Views 5 Unlocks
Reviews


Igneous forvironment


What are the four stages for forming a caldera?



-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.

- column

stue

pa

Firrer cookie

Lara

Five grained rocks - rapid cooling

at a shallow depth 3 Welded toft


Define caldera.



-Volcanic ash

pyroclastic

flow

- 2 Porphyritic rock

(2 grain sizes) -rock cools at a diff. locations within

Earth

@ Pegmatite Chuge crystals)

-water-rich portion

of magna

Coardet

grains

routes * slow cooling of the magna


How and where do nine different textures of igneous environment form?



If you want to learn more check out What is the use of histograms?

o

magna chamber

chib

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

ee

Study S

CR

www.

y Upper

2 km

Continental

aust

magna chamber

linear

fissure

2

-

tissure

crack

Magma reaches surface, fissure eruptions begin

magma

3 Major emption! -Pyroclastic flows and cription Column form

eruption

r

Pyroclastic

flow

Columns We also discuss several other topics like What is the meaning of bracts?

9 Roof collapse and doming occurs

remaining

- caldera

felsic magna Don't forget about the age old question of What are the examples of reputable non­profit organizations?

www

cooled

chamber

Rocks

Levels of layers cooled magna chamber = granite 6 going ↑'

pyroclastic flow deposits & welded tuff @ ash from eruption column wow-welded tuff 3

Pt

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

most recent

core lava flows, ash, mud flows

step

sides

- Pre-volcano Don't forget about the age old question of Why can't utopians exist?
If you want to learn more check out What age is the last stage of puberty?

-pography

-old rocks

magnetic

conduit

Pt. 2 Sketch, label, + describe plate tectonics setting

subduction zone

ww.

w

continental crust

m. lith. asthen.

asthen.

T

EN.A. plate

melting due to a

add volatiles

Bt. ©

. -mudflow deposits

- lava flow, pyroclastic flow

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