STRUCTURAL GEOLOGY HATCHER 4

Question 1

The displacement field for tectonically driven particle motions and involves the processes by which the particle motions are achieved

Answer 1

Deformation

Question 2

Change in shape

Answer 2

Distortion

Question 3

Chane in orientation

Answer 3

Rotation

Question 4

Change in position

Answer 4

Translation

Question 5

Aspects of shape change measures as changes in line length, angles between line or vlumbe changes

Answer 5

Strain

Question 6

Lines that are straight and parallel remain the same even after defromation

Answer 6

Homogenous Strain

Question 7

rock body deformation strain

Answer 7

Incremental Strain

Question 8

Change in length which may be extended or shortened

Answer 8

Elongation L1-L0/L0

Question 9

The ratio of deformed line length to the original length

Answer 9

Stretch L1/L0 1+elongation

Question 10

What is quadratic elongation

Answer 10

Square of the stretch S^2

Question 11

ratios are (dimensionless, with units)

Answer 11

Dimensionless

Question 12

Change I angular relationship which develps when differential movement occurs along set of parallel lines

Answer 12

Shear strain tan (Rotation angle)

Question 13

Volume changes

Answer 13

Dilational Strain Volume strain = V1-V0/ V0

Question 14

Three mechanisms of Dilations

Answer 14

1) Closing of Voids- Negative
2) Presolution Dissolution - Neg
3) Fracturing - Pos

Question 15

Strain is always

Answer 15

Change / Original

Question 16

X=Y>Z

Answer 16

Oblate Spheroid X-Vertical Y- from the paper

Question 17

Rotational Homogenous Strain caused by non coaxial deformation

Answer 17

Simple Shear

Question 18

results from the distortion by homogenouos deformaton in which the principal axes do not rotate

Answer 18

Pure Shear (Homogenous)