GEOS-2123-Module: Structural Geology

STRUCTURAL GEOLOGY

A Little Quizz...
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1/ Define force, traction and stress.

2/ Stress on a surface can be decomposed into two components. What are they?

3/ The stress on a material point is represented by an ellipsoid. How is that elliposid when the only source of stress is the weight of rocks?

4/ What is the deviator?

5/ How is σi mathematically defined?

6/ How are stylolitic joints oriented in a stress regime is compression?

7/ How are extensional fractures oriented in a stress regime is extension?

8/ How is the stress ellipsoid oriented in a transcurrent tectonic regime.

9/ What causes stress perturbation?
A site worth visiting > http://www.world-stress-map.org