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10 Cards in this Set
- Front
- Back
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types of dip-slip faults
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normal, reverse(thrust), and strike-slip fault
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Normal
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A.Hanging wall block moves down relative to the footwall block
B. Accommodate lenthening or extension of a meter or so C. Larger scale normal faults are associated with structures called fault-block mountains |
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Reverse(Trust)
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A. Hanging wall block moves up relative to the footwall block
B. Reverse faults have dips greater than 45" and thrust faults have dips less than 45" C. Accomodate shortening of the crust D. Strong compressional forces |
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Strike-slip
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A. Dominant displacement is horizontal and parallel to the strike of the fault
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Right-lateral strike-slip fault
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as you face the fault, the opposite side of the fault moves to the right.
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Left-lateral strike-slip fault
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as you face the fault, the opposite side of the fault moves to the left.
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strike-slip fault transform fault
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A. large strike-slip fault that cuts through the lithosphere
B. accomodates motion between two large crustal plates. |
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anticline
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upfolded or arched rock layers
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syncline
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downfolds or troughs of rock layers
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Depending on their orientation, anticlines and synclines can be described as
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symmetrical, asymmetrical, recumbent (an overturned fold), or plunging
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