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3 Types of Metamorphism

Miss Holl

Rowland High SchoolOctober 24, 2006

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Outline Regional metamorphism

Contact metamorphism Hydrothermal metamorphism

Quick ime and aIFF (Uncompressed) decompressor

are needed to see this picture.

Quick

ime and a

IFF (Uncompressed) decompressorare needed to see this picture.

Quick

ime and a

IFF (Uncompressed) decompressorare needed to see this picture.

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Regional MetamorphismDefinition

Roc s are

metamorphosed

over large areas

that are the size of

many states oreven several

countries

uic ime and ancompressed decompressor

are needed to see this picture

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Regional Metamorphism Caused by tectonic plates smashing

into each other!

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Regional MetamorphismConditions

High pressure

High temperature

Plate tectonics

Continents collide smash into each

other Ocean crust subducts

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Regional Metamorphism Pictures

uic ime an ancompresse ecompressor

are nee e to see this picture

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Regional Metamorphism Himalayan

Mountains -

Continent-

Continent

Collision!

ui

ime

an

a

n

ompresse

e

ompressorare nee

e

to see this pi

ture

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Contact MetamorphismDefinition -

Hot magma or

lava changesmetamorphoses

roc s

Can happen deepunderground or atthe surface

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Contact MetamorphismConditions

low to moderate pressure P

Pressures are generally less than 4

ilobars Kb

low to high temperature T

Temperatures of metamorphism vary

widely from 400-1000 Celcius C

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Contact Metamorphism Pictures

uic ime an ancompresse ecompressor

are nee e to see this picture

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Contact Metamorphism Pictures

uic Time an aT FF Uncompresse ecompressor

are nee e to see this picture

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Hydrothermal metamorphism

uic Time anda

T

ncompresseddecompressor

areneededtoseethis picture

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Hydrothermal MetamorphismDefinition

Super-heated ocean water changes

roc s

Minerals are dissolved or

mix with ocean water minerals to form

new minerals

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Quic TiT FF U c r ss c r ss r

r t s t is ictur

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Hydrothermal metamorphismConditions

Super-heated ocean water emitted from

hydrothermal vents on the ocean floor

High heat

No pressureQuick

"

ime and a"

IFF (Uncompressed) decompressorare needed to see this picture.

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Hydrothermal metamorphism Pictures

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Hydrothermal metamorphism Pictures Quick ime a d a

I ( compressed) decompressorare eeded to see this picture.

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Quic TiT FF U c r ss c r ss r

r t s t is ictur

Quic#

Ti$ % &

' (

)

'

T0 FF 1 U(

c2

$

3

r% ss%)

4

)

% c2

$

3

r% ss2

r'

r%

(

% %

)

%

)

t2

s% %

t5

is3

ictur%

Quic#

Ti$ % &

' (

)

'

T0

FF1

U(

c2

$

3

r%

ss%

) 4

)

%

c2

$

3

r%

ss2

r'

r% (

% %

)

%

)

t2

s% % t5

is3

ictur%

SummaryDiff r t c iti s cr at iff r t ty s

fmetamor ic r oc s

Hig temp, ig Pr essure - regionalmetamorphism

High temp, low pressure - contact

metamorphism Hot water - hy rothermalmetamorphism