Meta Flashcards

1
Q

Protolith of slate

A

Shale

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2
Q

Protolith of phyllite

A

Shale

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3
Q

Protolith of schist

A

Shale

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4
Q

Protolith of gneiss

A

Shale/igneous rock

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5
Q

Protolith of quartzite

A

Sandstone or siltstone

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6
Q

Protolith of marble

A

Limestone

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7
Q

Types of cleavage

A

Slatey cleavage

Schistosity

Gnessic texture/banding

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8
Q

Order of shale increasing metamorphism

A

Slate, phyllite (low), schist (med), gneiss (high)

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9
Q

Granofels metamorphism type?

A

Regional

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10
Q

Hornfels metamorphism type?

A

Contact

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11
Q

Contact

A

Recrystallization due to increased temperature, little to no linear or planar textures/fabrics

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12
Q

Regional

A

Elevated temperature, pressure and stress, development of lineation and foliation

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13
Q

Dynamic

A

Recrystallization due to increased stress, broken crystals, rotated augens, streaks of unaltered rock

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14
Q

Chlorite grade

A

Low

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15
Q

Mica grade

A

Low to med

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16
Q

Garnet grade

A

Med to high

17
Q

Staurolite grade

A

Med

18
Q

Sillimanite grade

A

High

19
Q

Prophyroblast

A

Large minerals that have grown In finer matrix

20
Q

Porphyroclast

A

Large minerals present before metamorphism, resistant to recrystallization. May have been stretched or rotated