Foliated metamorphic rocks form when pressure is applied
a. outward at the two sides (tension).
b. inward at the two sides (compression).
c. in a shearing environment (tension).
d. as compression or tension
Q. 2 -
A regional meamorphic rock that has both igneous and high-grade metamorphic characteristics is a(n)
a. schist.
b. amphibolite.
c. migmatite.
d. granitite.
Q. 3 -
The type of metamorphism that is common in fault zones, in which rocks are subjected to high
differential pressures, is called:a.
contact.
b. regional.
c. differential metamorphism.
d. dynamic metamorphism.
e. hydrothermal
Q. 4 -
Which of the following lists of foliated rock types is arranged according to increasing coarseness of
texture?
a. slate, phyllite, gneiss, schist
b. slate, amphibolite, schist, phyllite
c. schist, phyllite, gneiss, slate
d. slate, phyllite, schist, gneiss
e. schist, phyllite, amphibolite, gneiss
Q. 5 -
The intensity of regional metamorphism may be recognized by:
a. index of recrystallization.
b. index fossils.
c. index minerals.
d. index polymorphs.
e. index cards.
Q. 6 -
An example of a region where mylonites are formed is the:a.
Cascade Range.
b. mid-oceanic ridges.
c. San Andreas Fault Zone.
d. Valles Marianas Rift Zone.
e. Mendocino Fracture Zone.
Q. 7 -
The reaction of country rock with solutions from a cooling magma is known as:
a. hydrothermal solution.
b. hydroxide alteration.
c. geothermal alteration.
d. hydrothermal alteration.
e. hydrostatic alteration
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