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4 Cards in this Set
- Front
- Back
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Smooth planar cracks, Form in tension, disrupt cohesion and imperceptible movement
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Joints
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Sliding or sharing movement parallel to the plane of fracture, no tensional opening. Product of tectonic loading, abundant in rocks that have been folded or faulted
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shear fractures
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testify to origin by shear, give direction of movement which
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slickenside
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part joint and part shear fracture
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Transitional tensile fractures
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