MAP X en und PROBLEM 5: FAULT-BEND FOLD 1721d 2²7 23²/ 22°- 25- CROSS-SECTION O O O 23°/ 22 1000 25° 23° 0 2° 14 well well tro Fault oooooooooo 38° -2° 37° F₁ 1 km X' 000 pin line Question 1. Use the bedding dips to define four fold hingelines. Plot these on the map. Calculate hinge angles and plot the hinges on the cross section. Question 2. Draft the marker bed, denoted with circles, through the cross-section using the hinge lines to determine where the bed changes dip. Question 3. A well drilled into the crest of the anticline intersects a fault at depth dipping 23°. Use the hinges to predict where this fault changes dip to horizontal, an draft the fault through the cross-section. Label each hinge as active or passive. Question 4. Use the backlimb length to determine the amount of slip on the fault. Question 5. Calculate the elongation strain between X and X. Use the correct sign!

Applications and Investigations in Earth Science (9th Edition)
9th Edition
ISBN:9780134746241
Author:Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. Tasa
Publisher:Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. Tasa
Chapter1: The Study Of Minerals
Section: Chapter Questions
Problem 1LR
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MAP
X
en und
PROBLEM 5: FAULT-BEND FOLD
1721d
2²7 23²/
22°- 25-
CROSS-SECTION
O O O
23°/
22
1000
25°
23°
0
2°
14
well
well
tro
Fault
oooooooooo
38°
-2°
37°
F₁
1 km
X'
000
pin line
Transcribed Image Text:MAP X en und PROBLEM 5: FAULT-BEND FOLD 1721d 2²7 23²/ 22°- 25- CROSS-SECTION O O O 23°/ 22 1000 25° 23° 0 2° 14 well well tro Fault oooooooooo 38° -2° 37° F₁ 1 km X' 000 pin line
Question 1. Use the bedding dips to define four fold hingelines. Plot these on the map.
Calculate hinge angles and plot the hinges on the cross section.
Question 2. Draft the marker bed, denoted with circles, through the cross-section using the
hinge lines to determine where the bed changes dip.
Question 3. A well drilled into the crest of the anticline intersects a fault at depth dipping 23°.
Use the hinges to predict where this fault changes dip to horizontal, an draft the fault through
the cross-section. Label each hinge as active or passive.
Question 4. Use the backlimb length to determine the amount of slip on the fault.
Question 5. Calculate the elongation strain between X and X. Use the correct sign!
Transcribed Image Text:Question 1. Use the bedding dips to define four fold hingelines. Plot these on the map. Calculate hinge angles and plot the hinges on the cross section. Question 2. Draft the marker bed, denoted with circles, through the cross-section using the hinge lines to determine where the bed changes dip. Question 3. A well drilled into the crest of the anticline intersects a fault at depth dipping 23°. Use the hinges to predict where this fault changes dip to horizontal, an draft the fault through the cross-section. Label each hinge as active or passive. Question 4. Use the backlimb length to determine the amount of slip on the fault. Question 5. Calculate the elongation strain between X and X. Use the correct sign!
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