________, a common mineral found in igneous rocks, is the most abundant mineral in detrital sedimentary rocks.

Question 1 options:

Quartz

Calcite

Biotite

Orthoclase

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Question 2 (0.5 points)

What is probably the single most important, original, depositional feature in sedimentary rocks?

Question 2 options:

sizes of the sand grains

bedding or stratification

compaction of the mud and clay

degree of lithification

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Question 3 (0.5 points)

Compaction is a very important part of the lithification process for which of the following sediments?

Question 3 options:

cobble

gravel

mud

sand

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Question 4 (0.5 points)

Which statement concerning sedimentary rocks is not true?

Question 4 options:

They probably show some evidence of stratification.

They may contain fossils that provide clues about ancient life forms.

They are composed of particles and constituents derived from weathering and erosion of other rocks.

They were originally deposited at depth below the bottom of the sea.

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Question 5 (0.5 points)

Sedimentary rocks account for about what percentage of the Earth’s outermost 10 kilometers of rock (first percentage). Also, what percentage of the Earth’s continental area is covered by sedimentary rocks (second percentage)?

Question 5 options:

5% & 75%

85% & 100%

3.5% & 100%

65% & 10%

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Question 6 (0.5 points)

What platy, parallel, mineral grains are the most visual aspect of foliated metamorphic rocks?

Question 6 options:

quartz

micas

carbonates

feldspars

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Question 7 (0.5 points)

What foliated, metamorphic rock is texturally intermediate between slate and schist?

Question 7 options:

phyllite

quartzite

gneiss

fault breccia

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Question 8 (0.5 points)

Which low-grade metamorphic rock, composed of extremely fine-sized mica and other mineral grains, typically exhibits well-developed rock cleavage?

Question 8 options:

hornfels

quartzite

slate

schist

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Question 9 (0.5 points)

________ is typically formed by metamorphism of a sandstone.

Question 9 options:

Amphibolite

marble

quartzite

slate

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Question 10 (0.5 points)

What is the major source of heat for contact metamorphism?

Question 10 options:

heat from grinding and shearing on faults

deep burial and heat from the Earth’s interior

heat from a nearby magma body

heat from the spontaneous decomposition of micas and feldspars

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