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14 Cards in this Set
- Front
- Back
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Faults are a response to ________
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shear stress
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faults that originate as Coulomb shear fractures form at 30deg from σ1, with the strike perpendicular to σ3
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Anderson's theory of faulting
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normal faults are ________deg from surface
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60
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reverse faults are _________deg form surface
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30
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faults systems are __________ classification
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tectonic
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fault arrays are ____________ classification
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geometric
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what are the two geometric classifications
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synthetic
antithetic |
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what are the three tectonic classifications
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normal fault
reverse fault strike-slip fault |
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where do normal fault systems occur
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rifts
passive margins mid ocean ridges |
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half graben
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rotation of a block along a normal fault, block is bounded by a fault on only one side
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two adjacent normal faults dipping towards one another
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horsts and grabens
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where do reverse fault systems occur
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arrays of thrust faults
from in response to regional shortening occur in conjuntion with folding |
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where do strike slip fault systems occur
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transform boundaries
occur within the plate occur as components of convergent orogens components of mid ocean ridges creat flower structures |
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why are faults important
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ground water control
oil traps ore minerals earthquakes |
