Old Earth Ministries Online Geology Curriculum

Geology Chapter 6 Test


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1: Layers of rock are normally called
formations
units
laminations
2: This type of sedimentary rock consists of mineral fragments that were previously eroded from a source rock.

3: This clastic rock is the most prominent sedimentary rock, mostly composed of quartz, and it resists weathering.

4: Conglomerates are made up of gravels, with well rounded grains that are larger than
1 mm in diameter
7 mm in diameter
2 mm in diameter
1 cm in diameter
5: Black shale obtains its color from
magnesium
organic material
iron oxide
stained from weathering
6: Chalk is comprised of skeletal fragments of microscopic plants and animals.
True
False
7: Dolomite is basically calcium carbonate, with this atom replacing some of the calcium ions.
beryllium
strontium
magnesium
radium
8: Rock salt is composed of the mineral __________.

9: Transgression and regression refers to the process of the sea level changing the deposition zones for the various types of rocks.
True
False
10: Graded bedding is caused by
turbidity currents
sand waves
deposition of sand on a beach
11: A raindrop impression is an example of a trace fossil.
True
False
12: The interaction of the atmospheric elements and the rocks exposed at the surface is called...
deposition
weathering
compaction
separating
13: The transporting of sediments causes sorting. This sorting is called
grain organization
sedimentary classification
sedimentary differentiation
grain differentiation
14: The final process in producing a sedimentary rock is...
stratification
compaction and cementation
deposition
15: Material deposited in a beach environment would produce
a limestone
a shale
a sandstone
16: Limestone is
a clastic rock
a nonclastic rock
17: Chalk is an evaporite deposit.
True
False
18: A bedding plane represents a former surface of the earth.
True
False
19: By looking at cross-bedding, geologists can tell the direction of the wind or water that carried the sediments.
True
False
20: The cement that holds sedimentary rocks together is...
gypsum, halite, and calcite
calcite, quartz, and limonite
halite, quartz, and talc