where does deformation occur
ALONG PLATE MARGINS
Stress
force applied to a given area
Strain
changes in the shape or size of a rock body caused by stress
Sheer stress
changes shape
Joints
fractures that result from brittle deformation
Folds result from
compressional stress (shortens and thickens crust)
Types of Folds
Domes and Basins
Faults
Fractures in rocks along which appreciable displacement has taken place
fracture
divides rock into two plus pieces
Garben
drops
Horst
Raised
Dip
is the acute angle that a rock surface makes with a horizontal plane.
Strike
direction of line formed
perpendicular to the dip
Strike-slip
hint: reverse fault- crack in the rock
Dominant displacement is horizontal and parallel to the strike of the fault