Chapter 8 - Sedimentary Rock Flashcards

1
Q

Clastic sediments

A

broken pieces of rock deposited by water, wind, ice, or some other physical process

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2
Q

Chemical sediments

A

sediments produced by some inorganic (non-biological) precipitation of dissolved compounds

ex. evaporation

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3
Q

Biogenic sediments

A

sediments produced by organic (biological) precipitation of compounds or consist of the remains of living organisms

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4
Q

Sorting

A

grains are separated by density and size

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5
Q

Abrasion

A

grains become smaller and more rounded the longer that they are transported

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6
Q

Porosity

A

the amount of empty space contained in a rock

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7
Q

lithification

A

the solidification of buried sediments into rock. can happen through cementation or compaction

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8
Q

arkose

A

a form of sandstone with both quartz and feldspar in it

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9
Q

coquina

A

a form of sandstone composed entirely of shell fragments

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10
Q

graded bedding

A

forms when deposition occurs in water containing sediment consisting of many different sizes. heavier grains are below lighter grains

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