Dynamic Earth: Chapter 6

Question 1

deformed material recovers initial shape

Answer 1

Elastic

Question 2

does not return to initial shape; bends in response to stress

Answer 2

Ductile/Plastic

Question 3

does not return to initial shape; fractures at points of weakness

Answer 3

Brittle

Question 4

application of force over an area

Answer 4

Stress

Question 5

resulting change in the shape or volume of a rock caused by stress

Answer 5

Strain

Question 6

steeply dipping limbs, highly modified by strain

Answer 6

Isoclinal Folds

Question 7

center of fold is dipping such that the limbs dip in the same direction; highly modified by strain

Answer 7

Overturned Folds

Question 8

Anticlines and Synclines are…

Answer 8

Folds

Question 9

Angled Anticlines and Angled Synclines are…

Answer 9

Plunging Folds

Question 10

a fold that is overturned so much that the dip of the limbs is horizontal

Answer 10

Recumbent Folds

Question 11

beds dip away from a central point and resembles an anticline in cross section

Answer 11

Structural Dome

Question 12

beds dip towards a central point, resembles a syncline in cross section

Answer 12

Structural Basin

Question 13

fractures in bedrock along which movement has taken place

Answer 13

Faults

Question 14

exposed cross-section

Answer 14

Outcrop

Question 15

movement is parallel to the dip of the fault surface

Answer 15

Dip-slip Faults

Question 16

movement is parallel to the dip of the fault surface

Answer 16

Strike-slip Faults

Question 17

movement has both strike and dip components

Answer 17

Oblique-slip Faults