Sprint 3:26 PM a instructure-uploads.s3.amazonaws.com of Geology by Stephen Mars

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Sprint 3:26 PM a instructure-uploads.s3.amazonaws.com of Geology by Stephen Marshak 5th Edition pp 297-322 Attempt all and Submit Below 1. Which of the following conditions will tend to make rocks change by ductile deformation rather than by brittle deformation? a. cool surroundings b. slowly applied stress c, position fairly close to Earth's surface d. granitic composition 2. Brittle deformation a. occurs when many atomic bonds are broken quickly and rock pieces separate. b. is more likely to occur deep in the crust than at the surface. d. produces folds, like antidlines 3. Stress a. is the change in shape produced by strain b. is the same as force. c. developed during orogeny can be different at various locations. d. created by plate collision is the same everywhere and reflects the total force produced by the interacting plates. 4. A horizontal line on Earth's surface has a plunge of a. 90 b. 45 c. 0 d. greater than 120" S. The crust in the Basin and Range Province of Nevada, Utah, and Arizona is stretching: therefore, fault movement in this region must be a. normal. b. shear d. thrust. 6. What type of fault does the diagram show? a. left-lateral strike-slip fault b. oblique-slip fault C. dip-slip fault, thrust d. dip-slip fault, normal 7. In this image, from Arches National Park in Utah, which of the following terms best describes the geologic feature depicted? b. slip along thrust faults c. shear along the limb of a plunging anticline d. erosion of a joint set 8. Identify the TRUE statement. The diagram shows b. a nonplunging syncline. c. an anticline plunging toward the north d. a syncline plunging toward the south 9. Which of the following statements is FALSE? The East African Rift Valley a, is a result of normal faulting b. is bordered by linear mountain ranges called fault-block mountains. c. is produced by compressional stress d. has volcanoes along it because asthenosphere is rising under the rift and supplying heat. 10 Which of the following terms is not associated with the process of mountain building? a. orogeny b. tectonic foliation c. cratonic platform d. brittle and ductile deformation

Explanation / Answer

1.b.slowly applied stress.

*It does not support high temperature and pressure, so it does not occur near earth.

2. a. Occurs when many atom bonds are broken quickly and rock pieces separate.

*rocks respond to stress in one of two ways: they break, or they bend. When a rock breaks, it is called the brittle deformation.

3. c. Developed during orgoceny can be different at various locations.

*force acting on a rock per unit area is called stress in geology.

4. C. 0°

5. a. Normal

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