STRUCTURAL GEOLOGY HATCHER 9

Question 1

Plane of dispplacement or the actual movement surface

Answer 1

Fault plane

Question 2

Rock mass resting on the fault plane

Answer 2

Hanging wall

Question 3

Rock mass beneath the fault plane

Answer 3

Footwall

Question 4

Movement parallel to the plane surface

Answer 4

Slip

Question 5

the total amount of motion measured parallel to the direction of motion

Answer 5

Net Slip ot True Displacement

Question 6

The net displacement of the combined Strike and Dip Slip

Answer 6

Rake

Question 7

Heave and Throw are componets of

Answer 7

Dip Slip

Question 8

Heave corresponds to

Answer 8

the horizontal component normal to the strike

Question 9

Throw Corresponds to

Answer 9

the Vertical component

Question 10

Polished fault SURFACES

Answer 10

Slickensides

Question 11

STRIATIONS on such surfaces

Answer 11

Slickenlines

Question 12

Aligned FIBROUS MINERALS on a movement surface

Answer 12

Slickenfibers

Question 13

What are these three and their implication?

Answer 13

Lineations indicates relative movement along a surface

Question 14

A british geologist who classified faults

Answer 14

Ernest Anderson

Question 15

HW moved down relative to FW

Answer 15

Normal Fault

Question 16

two normal fault dipping TOWARDS ONE ANOTHER produces

Answer 16

Graben - dropped down block

Question 17

Two normal faults dipping away from each other

Answer 17

Horst - Up thrown block

Question 18

Normal faults that exhibit concave up geometry that is STEEP plane near the surface and gentler within depths

Answer 18

Listric Normal Fault or Lag

Question 19

Type of fault produced in conjuction with Listric Fault

Answer 19

Rollover Anticline

Question 20

HW moved up relative to FW

Answer 20

Reverse and Thrust Faults

Question 21

Age of Reverse Faults

Answer 21

45deg or greater (>45)

Question 22

Age of Thrust Faults

Answer 22

30deg or less (<30)

Question 23

Strike slip fault that compensates differences in Motion between plates

Answer 23

Transform Faults

Question 24

faults that are approximately parallel to one another unconnected but sometimes overlap

Answer 24

En Enchelon Fault

Question 25

faults that that converge toward a single point

Answer 25

Radial fault

Question 26

Faults that are concentric around a single point

Answer 26

Concentraic Fault

Question 27

Fault: Assymetric Repetion= _______: Symmetric repetition

Answer 27

Fold

Question 28

produced along a fault when units appeared to be pulled INTO a Fault during movement

Answer 28

Drag (Eto ung line ng bedding magbebend towards the plane)

Question 29

In a thrust fault, a drag in the hanggin wall would look like

Answer 29

Being pulled down dip

Question 30

Drag in listric faults where layering appears to have been darg down dop parallel to the movement along the fault

Answer 30

Reverse drag

Question 31

Is slickensides and slickenlines enough to prove significant faulting?

Answer 31

No, they may forrm on bedding surfaces during folding or may actaully form on joints that have small shear displacement

Question 32

A topographic surface whch is offset by DIP SLIP motion along a fault and DIRECTLY INDICATE the MOVEMENT SENSE of a fault

Answer 32

Fault Scarp

Question 33

When such topographic surface has been eroded along the fault and have been lowered to the topographic surface which removes anuu resistant hanging wall and does not directly give the movement sense

Answer 33

Fault Line Scarp

Question 34

A fault line scarp in which erosion preserves the movement semse

Answer 34

Resequent Fault Line scarp

Question 35

A fault line scarp that have been eroded and provides a fault movement sense

Answer 35

Obsequent Fault Line Scarp

Question 36

Primary Criteria

Answer 36

Repetition and Omission of Strat Units
Displacement of recognizable markers
Truncation on of earlier structure

Question 37

The observation that maximum principal stress bisects acute angle between the conjugate shear planes of the stress elipsoid

Answer 37

Hartman’s Rule

Question 38

Formula for acute angle between shear planes

Answer 38

angle = 45 - angle of internal friction/2