Geologists have principally used which class of rocks to establish the relative time scale?
A) Igneous
B) Foliated
C) Metamorphic
D) Sedimentary
Correct Answer:
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Q37: The Paleocene is a(n)
A) epoch.
B) era.
C) eon.
D)
Q38: The Pliocene is a(n)
A) epoch.
B) era.
C) eon.
D)
Q39: The Jurassic is a(n)
A) epoch.
B) era.
C) eon.
D)
Q40: Periods are divided into
A) eons.
B) epochs.
C) millennia.
D)
Q41: Starting with a sample of pure parent
Q43: In which of the following eons do
Q44: If a rock sample contains uranium and
Q45: Which of the following is the era
Q46: The Tertiary is a(n)
A) epoch.
B) era.
C) eon.
D)
Q47: Which of the following radionuclides has the
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