Faults

Question 1

Faults that have slipped recently or have potential to slip in the near future

Answer 1

Active faults

Question 2

Branching fault that join the master fault at depth but dip in the opposite direction

Answer 2

Antithetic fault

Question 3

Dip-slip fault in which the hanging fault has moved down relative to the footwall

Answer 3

Normal fault

Question 4

Fault that has both a strike-slip and dip-slip component

Answer 4

Oblique-slip fault

Question 5

Faults which follow bedding or occur parallel to the orientation of bedding planes

Answer 5

Bedding Fault

Question 6

A fault that does not manifest onto the surface

Answer 6

Blind fault

Question 7

Formed by faulting the connecting limb of an anticline or syncline pair overthrusting the hanging wall anticline, and preserving the footwall syncline

Answer 7

Break thrust

Question 8

A fault which forms concentric from a point

Answer 8

Concentric point

Question 9

A strike-slip fault that appears as conjugate sets which were active at about the same time under the same regional stress field

Answer 9

Conjugate strike slip fault

Question 10

A fault that resulted in shortening of a body of rock

Answer 10

Contractional Fault

Question 11

A fault that initiated as a horizontal or subhorizontal surface along which the hanging wall sheet of rock moved relative to the footwall

Answer 11

Detachment Fault / Decollement

Question 12

A fault in which displacement occurs in a direction parallel to the dip of the fault

Answer 12

Dip-slip fault

Question 13

A fault that terminated at the surface due to erosion

Answer 13

Emergent fault

Question 14

Inactive, ancient fault exposed on the surface by erosion

Answer 14

Exhumed fault

Question 15

A fault that resulted in lengthening of a layer

Answer 15

Extensional fault

Question 16

Faults which converge or project toward a single point

Answer 16

Radial fault

Question 17

Dip-slip fault in which the hanging wall has moved up relative to the footwall with a 45 degrees or more dip angle

Answer 17

Reverse fault

Question 18

A pull apart en enchelon strike-slip fault with right step-overs or left step overs and form basins

Answer 18

Rhomb-graben / Rhombchasm

Question 19

A push-up en echelons strike-slip fault with right step-overs sinistral fault or left step-over dextral and forms domes

Answer 19

Rhomb-horst

Question 20

Array of subsidiary faults that develop when stress was transferred to the overlying material

Answer 20

Riedel Shears

Question 21

A strike-slip fault that moves right parallel to the strike from a reference

Answer 21

Right-lateral Strike slip fault/ Dextral Fault

Question 22

A fault that has the amount of its slip changing along the strike, so that the hanging wall block rotates around an axis perpendicular to the fault surface

Answer 22

Scissor Fault

Question 23

Fault with a dip between about 10 and 30 degrees

Answer 23

Shallow dipping fault

Question 24

Formed independently of folding but not having a footwall syncline

Answer 24

Shear thrust

Question 25

Fault that branches from thrust and strike-slip faults

Answer 25

Splay

Question 26

Fault with a dip between about 60 and 80 degrees

Answer 26

Steeply-dipping fault

Question 27

Commonly forms in relatively unconsolidated sediments during deposition and produce thickened stratigraphic units in the downthrown block

Answer 27

Growth fault

Question 28

Fault with a dip of about 0 degrees

Answer 28

Horizontal fault

Question 29

Smaller fault in a group of thrust faults

Answer 29

Imbricate thrust

Question 30

Fault that has not slipped in a long time and is probably permanently stuck

Answer 30

Inactive fault

Question 31

Free strike-slip fault that occur along plate boundaries

Answer 31

Interplate fault

Question 32

Free strike slip fault that form within plates

Answer 32

Intraplate fault

Question 33

strike-slip fault that moved left parallel to the strike from a reference

Answer 33

Left-lateral Strike-slip Fault / Sinistral strike-slip fault

Question 34

Normal fault that exhibits steep dip near the surface but flattens with depth, with a concave up surface

Answer 34

Listric fault

Question 35

Fault with a large net slip

Answer 35

Major fault

Question 36

Fault with a dip between about 30 and 60 degrees

Answer 36

Moderately dipping faults

Question 37

Fault in which all displacement occurs in a direction parallel of the strike of the fault

Answer 37

Strike-slip Fault

Question 38

Fault with a dip between about 10 and 0 degrees

Answer 38

Subvertical fault

Question 39

Branching fault that dips in the same direction as the master fault and join it at depth

Answer 39

Synthetic Fault

Question 40

fault that bounds the edge of the thrust sheets

Answer 40

Tear fault / Lateral Ramp

Question 41

Dip slip fault in which the hanging wall has moved up relative to the foot wall, with less than 45 degrees dip angle

Answer 41

Thrust fault

Question 42

Strike-slip fault that has free tips, unconstrained by structures, which are free to move so that their length can increase as displacement accumulates

Answer 42

Transcurrent fault

Question 43

Strike-slip fault that transfer displacement from one fault to another, whose tips terminate against other fault or extension fractures

Answer 43

Transfer fault

Question 44

Large strike-slip fault that segment plates or form plate boundaries

Answer 44

Transform Fault

Question 45

Fault with a dip of about 90 degrees

Answer 45

Vertical fault