Term
|
Definition
-crack along whcih there has been no appreciable movement -most common (smalll amount of stress) -forms from addition and subtraction of weight (overlying rocks) or shrinkage due (to cooling) |
|
|
Term
|
Definition
-fracture w. relative movnment of rocks -both sides are parallel to the fracture -dip at angle |
|
|
Term
|
Definition
| -one side of fault has moved in a given direction relative to the other side |
|
|
Term
|
Definition
| -block of rock above an inclined fault |
|
|
Term
|
Definition
| -block of rock below inclined fault |
|
|
Term
|
Definition
| -measure of movenment of fault based on marker beds |
|
|
Term
|
Definition
-hanging wall moves down -footwall moves up (tensional stress) |
|
|
Term
|
Definition
-trench like structure
-bounded by two normal faults |
|
|
Term
|
Definition
-trench like structure
-formed when hanging wall moves downward on curve fault surface
-subsidence occurs on single fault |
|
|
Term
|
Definition
-elevated block of crust
-bounded by parallel normal faults
-upthrust block |
|
|
Term
|
Definition
-tensional forces leave normal faults
-down-dropped blocks (graben) valley |
|
|
Term
|
Definition
-hanging wall moves up
-footwall down
-shortens and thickens crust
(compressional stress) |
|
|
Term
|
Definition
-low angle (<15) reverse fault
-older rocks are moved above younger rocks
-sometimes hangingwall is above footwall |
|
|
Term
|
Definition
-motion of fault blocks
-movement horizontal, parallel to strike direction
(sheer stress)
(left lateral & right lateral)
|
|
|
Term
|
Definition
|
|
Term
|
Definition
|
|
Term
|
Definition
|
|
Term
|
Definition
|
|
Term
Half- Graben (fault) PICTURE |
|
Definition
|
|
Term
|
Definition
|
|
Term
Rift Valley (fault) PICTURE |
|
Definition
|
|
Term
|
Definition
|
|
Term
|
Definition
|
|
Term
Strike Slip right lateral (fault) PICTURE |
|
Definition
|
|
Term
Strike Slip left lateral (fault) PICTURE |
|
Definition
|
|
