Geology 001 - Physical Geology » Summer 2021 » Chapter 7 Quiz

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Question #1
According to the stratigraphic principle called ________________________, sedimentary rocks are deposited in layers perpendicular to the direction of gravity.
A.   Original verticality
B.   Original horizontality
Question #2
The mineral zircon was selected for a U-Pb method of radiometric age dating. A mass spectrometric lab analysis showed that there are 50% of the parent isotope (U) left over in the mineral. If the half-life of the radioactive material is 4.5 billion years, then how old is the mineral?
A.   4.5 billion years
B.   50 billion years
C.   1/2 billion years
D.   25 billion years
E.   2.25 billion years
Question #3
Metamorphic rocks are best suited for radioisotopic dating than igneous rocks because metamorphic processes tend to form harder minerals that are least affected by weathering agents and hence better candidates for dating.
A.   FALSE
B.   TRUE
Question #4
Compared to land (terrestrial), the best environment for preservation of organisms into fossils is the ocean.
A.   TRUE
B.   FALSE
Question #5
Correlation involves matching up of rocks of similar properties in different regions.
A.   FALSE
B.   TRUE

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