Rock mechanics Flashcards
what force forms normal faults?
tension
what force forms reverse faults?
compression
what force causes folding?
compression
what force forms a tear fault?
shear force
fault plane
line along which movement has occurred
throw
the amount of vertical displacement of the rocks
dip slip
movement parallel to fault plane generally vertical
strike slip
movement parallel to the strike of the fault generally horizontal
fault dip
the angle the fault makes with the horizontal
hanging wall
the side that lies above the fault plane
footwall
the side that lies below the fault plane
downthrow
the side of the fault that has moved down
upthrow
the side of the fault that has moved up
bed
a layer of sedimentary rock with a thickness greater than 1cm
dip
the maximum angle of inclination of a rock surface from the horizontal