chapter 26.3 , 26.4 Flashcards

(33 cards)

1
Q

Define clasts

A

Small rock and mineral fragments

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2
Q

What types of erosion are rocks on Earth’s surface exposed to?

A

Water, wind and other forces

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3
Q

What does it mean if clasts are being transported?

A

Being moved from one place to another

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4
Q

What does it mean if clasts are being deposited?

A

Being dropped off

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5
Q

Define pore space

A

Empty spaces found between clasts

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6
Q

Define compaction

A

The process which clasts stick together due to the weight of overlaying material

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7
Q

Define cementation

A

Mineral precipitate slowly out of a water solution and crystallizes in the spaces between clasts

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8
Q

How are sedimentary rocks formed?

A

Clasts get compacted, water flows through, causing cementation

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9
Q

What is another name for clasts?

A

detrius

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10
Q

What are sedimentary rocks called that are mostly made of clasts?

A

detrital sedimentary rock

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11
Q

What is the decreasing size of clasts?

A

gravel, sand, silt, or clay/mud

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12
Q

Which clast size would be deposited first?

A

gravel

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13
Q

What are 4 common detrital sedimentary rocks?

A

conglomerate, sandstone, siltstone,

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14
Q

How are chemical sedimentary rocks formed?

A

Chemical sedimentary rock forms when mineral constituents in solution become supersaturated and inorganically precipitate

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15
Q

If sedimentary rocks contain remains of living organisms, what are they called?

A

biochemical sedimentary rocks

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16
Q

What are 2 common biochemical sedimentary rocks?

A

limestone and coal

17
Q

What are the tree types of sedimentary rock?

A

biochemical, chemical, detrital

18
Q

Metamorphic rock is changed by a combination of which 3 things?

A

Heat, pressure, and chemical reactions

19
Q

Which types of rocks can be changed by metamorphism?

A

Igneous, sedimentary, or metamorphic rocks

20
Q

What is it called when metamorphic changes in rocks occur over large areas?

A

Regional metamorphism

21
Q

What is it called when metamorphic changes in rocks occur over small changes?

A

contact metamorphism

22
Q

When shale is compressed, which type of metamorphic rock is created?

23
Q

What are the two types of metamorphic rock textures?

A

Foliated and nonfoliated

24
Q

Define foliated texture

A

Crystals that are arranged in layers and bands

25
Define nonfoliated texture:
rocks have crystals with more random orientation
26
Metamorphic rocks are mainly classified based on which two things?
texture and composition
27
Define rock cycle:
continual changing of rocks from one type to another
28
Which types of rocks are part of the rock cycle?
igneous, sedimentary, and metamorphic
29
What are the three types of rocks?
igneous, sedimentary, and metamorphic
30
Which type of rocks form from molten rock?
igneous
31
Which types of rocks are formed from clasts, precipitation, or compressed once living matter?
sedimentary
32
Which types of rocks are formed from heat, pressure, and chemical reactions?
metamorphic
33
What can form from hot water, evaporation, or molten rock?
minerals