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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