17 terms

Geology ch 8

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When all the grains in a rock are roughly the same size, the rock is said to be _______.
well sorted
The group of processes that transform sediments into rock is known as _______.
lithification
Sediment that is carried and deposited by the wind is known as _______ sediment.
eolian
A sedimentary rock formed by the evaporation of lake or seawater is known as a(n) _______.
evaporite
A _______ is a sedimentary deposit that forms where a stream enters a standing body of water.
delta
When gravel becomes lithified, _______ is formed.
conglomerate
_______ is the reduction of pore space in sediment as a result of the weight of the overlying sediments.
compaction
A _______ is a wave-resistant structure that is built from marine invertebrates.
reef
Which of the following describes a fine grained fissile rock consisting primarily of clay particles?
shale
A turbulent, gravity driven flow consisting of water and sediment is known as a _______.
turbidity current
Glacial till is an example of a deposit that is _______.
poorly sorted
A deposit with large clasts at the base that become finer upwards is known as a _______.
graded bed
Seasonal lakes, or _______, are common in arid areas.
playas
A biogenic sediment that forms from the accumulation of plant debris is known as _______.
peat
Which of the following is a category of sedimentary rocks formed by the precipitation of minerals dissolved in a lake, river, or seawater?
chemical
Most of the world's sedimentary rocks form as strata in which of the following environments?
continental shelves
A fine-grained sedimentary rock is known as _______.
mudstone
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