faults and stress unit 2 lesson 2. faults fractures in the earth occur when a force is applied to...
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![Page 1: Faults and Stress Unit 2 Lesson 2. Faults Fractures in the earth occur when a force is applied to the underlying rock, which movement occurs. Stress](https://reader035.vdocuments.net/reader035/viewer/2022062315/5697bff21a28abf838cbc0b3/html5/thumbnails/1.jpg)
Faults and Stress
Unit 2 Lesson 2
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Faults Fractures in the earth occur when a force is
applied to the underlying rock, which movement occurs.
Stress is the force per unit area acting upon a material.
There are 3 types of stress that acts upon the Earth’s rocks: Compression: decreases material volume Tension: pulls the material apart Shear: Causes the material to slip or twist
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Types of Faults Slip Faults
Horizontal tension Sideways movement
Normal Fault Tension (Apart)
Down on advancing block
Thrust/Reverse Fault Compression
Uplift of advancing block
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Examples of Faults Reverse Fault
Note the compression Note the uplift
San Andreas Fault Pulled apart Sideways movement
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