Geology Chapter 1.6

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  • Created by: abbbyw
  • Created on: 23-12-17 11:33
Diagenesis
includes all processes that occur in sediments at low temperature + pressure at or near earth's surface
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Metamorphism
the changing of rocks in the Earth's crust by heat / pressure / volatile content. It's isochemical + occurs in solid state
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Igneous rock
a rock that has crystallised from a magma
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Metamorphic rock
formed by the re crystallisation of other rocks in solid state due to pressure / temperature
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Partial melting
occurs when only a portion of rock in the lower crust or upper mantle is melted
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Recrystallisation
is the solid state process that changes minerals into new crystalline metamorphic minerals
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Crystallisation
occurs during the cooling of magma / lava so that solid mineral crystals form
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Burial
occurs when sediment is covered by younger layers of sediment
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Sedimentary rock
a rock composed of fragments that have been deposited compacted + cemented
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Clast
a fragment of broken rock produced by mechanical weathering + erosion
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magma accumulation
magma collecting within a magma chamber
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intrusions
composed of igneous rock formed below the earth's surface, where magma is forced into pre-existing rocks
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extrusion
the emission of magma onto the earth's surface where it forms a lava flow
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foliation
a texture in metamorphic rocks formed by the preferred alignment of flat / tabular minerals
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deposition
the laying down of sediment that occurs when a transporting agent loses energy
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weathering
the breakdown of rocks in situ
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erosion
the removal of weathered material, usually by the physical action of transported fragments
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transport
the means by which weathered material is moved from 1 place to another by water, wind ice or gravity
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uplift
the return of buried rocks to the Earth's surface by tectonic forces
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Other cards in this set

Card 2

Front

the changing of rocks in the Earth's crust by heat / pressure / volatile content. It's isochemical + occurs in solid state

Back

Metamorphism

Card 3

Front

a rock that has crystallised from a magma

Back

Preview of the back of card 3

Card 4

Front

formed by the re crystallisation of other rocks in solid state due to pressure / temperature

Back

Preview of the back of card 4

Card 5

Front

occurs when only a portion of rock in the lower crust or upper mantle is melted

Back

Preview of the back of card 5
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