Class 14 - Quiz


	Introduction
1.	Overview of Physical Geology
2.	Rock Identification Methods Geologic Principles
3.	Maps & Navigation Geologic Maps
4.	Igneous Rocks Magmatic Deposits
5.	Plutonic-Related Deposits Air Photos
6.	Volcanic Rocks Volcanic-Related Deposits
7.	Sedimentary Rocks Low Temp. Deposits GPS Navigation
8.	Hydrothermal Veins& Alteration
9.	Metamorphic Rocks Metamorphic Deposits
10.	Structural Geology Structural Controls on Mineralization
**	Mid Term
11.	Mechanical Erosion Placer Deposits
12.	Geochemical Sampling Methods
13.	Adit/Trench Mapping Geochemical Methods
14.	Geophysical Methods
15.	Project Planning Claim Staking
16.	Exploration Drilling Methods
**	Final Exam

Class 14 - Quiz

1. Why doesn’t the Earth’s inner core contribute to its magnetic field?

A. the temperature is above the Curie point.

B. it is spherical in shape.

C. friction between the inner and outer core.

D. polar wandering.

2. Magnetic anomalies represent ______________.

A. depressions in the mantle

B. large masses of rhyolite below the surface

C. ancient asteroid impact sites

D. discrepancies between the predicted magnetic field and that which is observed

3. The mineral ilmenite is weakly magnetic because it contains ________________.

A. titanium

B. chromium

C. iron

D. nickel

4. Which of the following rock types is most likely to contain magnetic minerals?

A. mafic plutonic igneous rocks

B. intermediate plutonic igneous rocks

C. felsic plutonic igneous rocks

D. schists containing pyroxene.

5. A person weighs more ______________.

A. at the north pole than the south pole

B. at the north pole than at the equator

C. at the equator than the north pole

D. at the equator than the south pole

6. An example of a gravity measurement which is artificially high would be ______________.

A. a measurement taken in the bottom of a valley

B. a measurement taken over a thick basalt layer

C. a measurement taken on the top of Mt. Everest

D. a measurement taken over a thick pumice layer

7. The specific gravity of a rock is ___________________.

A. greater than that of a mineral

B. less than that of a mineral

C. less than that of wood.

D. none of the above. It depends on what minerals the rock is comprised of.

8. The I.P method measures the ___________.

A. fall – off voltage when the current ceases

B. current flow at different frequencies

C. resistivity

D. all of the above

9. Which one of the following rock types can has the highest range of resistivity values?

A. Quartzite

B. Greenstone

C. Gabbro

D. Granite

10. Comparing the conductivity of pyrite (FeS₂) with the conductivity of arsenopyrite (FeAsS₂), does the presence of arsenic in the mineral arsenopyrite appear to cause more conductance or less conductance?

A. More

B. Less