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Geology > volcanism/igneous rocks > Flashcards

volcanism/igneous rocks Flashcards

1
Q

boyle’s law

A

when temperature goes up, pressure goes up

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2
Q

a slow cooling, intrusive rock

A

plutonic

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3
Q

a volcanic rock with vesicles

A

scoria

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4
Q

black rock, cools very fast, volcanic glass

A

obsidian

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5
Q

cloud of ash, lapilla, blocks, and bombs

A

pyroclastic cloud

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6
Q

material that comes out of volcano

A

tephra

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7
Q

rock made of volcanic material

A

tuff

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8
Q

is granite intrusive or extrusive?

A

intrusive

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9
Q

is rhiolite intrusive or extrusive?

A

extrusive

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10
Q

is diorite intrusive or extrusive?

A

intrusive

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11
Q

is andesite intrusive or extrusive?

A

extrusive

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12
Q

is gabbro intrusive or extrusive?

A

intrusive

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13
Q

is basalt intrusive or extrusive?

A

extrusive

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14
Q

large crystals are…..

A

intrusive

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15
Q

teeny crystals are…..

A

extrusive

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16
Q

large crystal that cools very slowly

A

phenocryst

17
Q

cut through grain of rock in the ground

A

dike

18
Q

full of malleable material pushing it’s way to the surface - oozing

A

diapir

19
Q

dikes that come together- can be big and form large structures

A

plutons

20
Q

large cooled plutons

A

batholiths

21
Q

blister-looking, flatter, cooled plutons

A

laccoliths

22
Q

downward blister of cooled plutons

A

lopolith

23
Q

magma splits into two compositions of rock, one more mafic than the other, makes layers

A

fractionation

24
Q

result of a giant volcanic eruption or series of eruptions covering large land or the ocean floor with basalt lava. Many flood basalts have been attributed to the onset of a hotspot reaching the surface of the earth via a mantle plume

A

flood basalts

25
Q

flatter volcano

A

shield volcano

26
Q

big pointy volcano

A

strato volcano

27
Q

hotspots are volcanic locales thought to be fed by an underlying mantle that is anomalously hot compared with the surrounding mantle

A

hotspots

Geology (3 decks)

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