The oldest rocks that were discovered in the lake superior region were: A. sands

Question

The oldest rocks that were discovered in the lake superior region were:

A. sandstones

B. metamorphosed basaltic volcanic rocks

C. metamorphosed shale

Point Value: 2

2.

Which of the following is correct about the Keweenawan Rift System?

A. Produced extensive outpouring of granites

B. formed about 5 billion years ago.

C. Produced extensive outpourings of basaltic lava.

Point Value: 2

3.

Major mountain-building events are called:

A. orogenies

B. sea floor spreading

C. transform boundaries

Point Value: 2

4.

The major source of iron ore is from:

A. Cambrian rocks

B. Precambrian Banded iron formation

C. Paleozoic rocks

Point Value: 2

5.

Archean rock record is dominated by:

A. greenstone belts

B. evaporites

C. gneiss belts

D. A & C Only

Point Value: 2

6.

The end of the Proterozoic was marked by:

A. Great global glaciation

B. Sea level rise

C. Global warming

Point Value: 2

7.

Eruption of widespread flood basalts in the Central United States during Proterozoic was related to:

A. Continental collision

B. large scale continental riffting

C. weathering and erosion

Point Value: 2

8.

The Gowganda unstratified tills formed by:

A. glacial deposition

B. weathering

C. igneous acivity

Point Value: 2

9.

The early continental crust had composition similar to:

A. granite

B. oceanic crust

C. sandstone

Point Value: 2

10.

Precambrian includes______of Earth's time.

A. 20 %

B. 50 %

C. 80 %

Point Value: 2

11.

The inclination angle provide an indication of:

A. paleolongitude

B. paleolatitude

C. paleoequator

Point Value: 2

12.

Steep inclination of fossil magnets indicates formation of the rock:

A. at high latitudes

B. at low latitudes

C. near the equator

Point Value: 2

13.

Youngest oceanic islands tend to be:

A. at the axes of mid oceanic ridges

B. away from the axes of mid oceanic ridges

C. near mid oceanic ridges

Point Value: 2

14.

Subduction is the process of underthursting lithospheric plate beneath another at:

A. destructive margin

B. constructive margin

C. mid oceanic ridge

Point Value: 2

15.

Shallow earthquakes occur under:

A. subduction zones

B. Mid oceanic ridges

C. convergent margins

Explanation / Answer

1. B. metamorphosed basaltic volcanic rocks

2. C. Produced extensive outpourings of basaltic lava.

3. A. orogenies

4. B. Precambrian Banded iron formation

5.C. gneiss belts

6. A. Great global glaciation

7.B. large scale continental riffting

8. A. granite

9.A. glacial deposition

10.C. 80 %

11. B. paleolatitude

12. A. at high latitudes

13. A. at the axes of mid oceanic ridges

14. B. constructive margin

15. B. Mid oceanic ridges

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