Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
14 Cards in this Set
- Front
- Back
Faults are a response to ________
|
shear stress
|
|
faults that originate as Coulomb shear fractures form at 30deg from σ1, with the strike perpendicular to σ3
|
Anderson's theory of faulting
|
|
normal faults are ________deg from surface
|
60
|
|
reverse faults are _________deg form surface
|
30
|
|
faults systems are __________ classification
|
tectonic
|
|
fault arrays are ____________ classification
|
geometric
|
|
what are the two geometric classifications
|
synthetic
antithetic |
|
what are the three tectonic classifications
|
normal fault
reverse fault strike-slip fault |
|
where do normal fault systems occur
|
rifts
passive margins mid ocean ridges |
|
half graben
|
rotation of a block along a normal fault, block is bounded by a fault on only one side
|
|
two adjacent normal faults dipping towards one another
|
horsts and grabens
|
|
where do reverse fault systems occur
|
arrays of thrust faults
from in response to regional shortening occur in conjuntion with folding |
|
where do strike slip fault systems occur
|
transform boundaries
occur within the plate occur as components of convergent orogens components of mid ocean ridges creat flower structures |
|
why are faults important
|
ground water control
oil traps ore minerals earthquakes |