Geologic Structures. Prepared by Betsy Conklin for Dr. Isiorho. Tectonic Forces at Work. structural geology: the branch of geology concerned with the shapes, arrangement, and interrelationships of bedrock units and the forces that cause them stress: a force per unit area
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Prepared by Betsy Conklin for
Plunging folds: anticline on left and right, syncline in center. The
hinge lines are at an angle to the block diagram, penetrating the
surface and emerging from the front cross section
A reverse fault. The fault is unaffected by erosion.
Arrows indicate compressive stress.
Diagram shows area after erosion; dashed lines
indicate portion eroded away
Thrust fault due to horizontal compression.
All pictures used in this power point presentation were taken from the following:
Carlson, Diane H., David McGeary and Charles C. Plummer. Physical Geology: Updated Eighth Edition. New York City, McGraw-Hill Higher Education, 2001.