Laboratory Manual for Introductory Geology 4e

EXERCISE 10.3
Determining Strike and Dip
Name:
Course:
Section:
Date:
(a) Use the azimuth protractor in the back of the manual to draw the indicated strike lines on each compass. Translate
each azimuth reading into a direction (e.g., northeast).
N
0°
N
0°
N
0°
Strike: 060°
Strike: 340°
Strike: 090°
Direction: ————————–– Direction: ————————–– Direction: ————————––
(b) Use the protractor to measure the strikes below. Give the strike direction in both azimuth and quadrant notations,
and describe the direction (e.g., northeast).
N
0°
360°
N
0°
360°
N
0°
360°
(Here the bed dips north.)
Azimuth:
————————––
Azimuth:
————————––
Azimuth:
————————––
Quadrant:
————————––
Quadrant:
————————––
Quadrant:
————————––
Direction:
————————––
Direction:
————————––
Direction:
————————––
(c) Use the protractor to measure the angle of dip for the two beds on the next page. The dashed lines indicate the
level of the horizontal. The shaded surfaces are the surfaces of the beds. Using the strikes given and the diagram for
each bed, indicate the rough direction of dip (e.g., west, northwest) for each bed. Remember, the direction of dip is
perpendicular to the direction of strike.
(continued)
10.2 BEGINNING WITH THE BASICS: CONTACTS AND ATTITUDE
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