Dynamic Earth: Chapter 6 Flashcards Preview

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Flashcards in Dynamic Earth: Chapter 6 Deck (17):
1

deformed material recovers initial shape

Elastic

2

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

Ductile/Plastic

3

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

Brittle

4

application of force over an area

Stress

5

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

Strain

6

steeply dipping limbs, highly modified by strain

Isoclinal Folds

7

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

Overturned Folds

8

Anticlines and Synclines are...

Folds

9

Angled Anticlines and Angled Synclines are...

Plunging Folds

10

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

Recumbent Folds

11

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

Structural Dome

12

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

Structural Basin

13

fractures in bedrock along which movement has taken place

Faults

14

exposed cross-section

Outcrop

15

movement is parallel to the dip of the fault surface

Dip-slip Faults

16

movement is parallel to the dip of the fault surface

Strike-slip Faults

17

movement has both strike and dip components

Oblique-slip Faults