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Exam III
Exam III
29
Geology
Undergraduate 1
04/05/2011

Additional Geology Flashcards

 


 

Cards

Term
Stress
Definition
force/unit area
Term
Strain
Definition
results from stress
Term
Compression
Definition
Shortening Stress
Term
Tension
Definition
Extension, stretching stress
Term
Shear
Definition
Each side is sliding past each other
Term
Brittle Deformation
Definition
Can result in joints and faults
Term
Ductile Deformation
Definition
rock sheared at great depth or high temperature (heat)
Term
Strike Fault
Definition
each side slides past each other with motion parallel to the fault
Term
Dip
Definition
each side of the fault moves up or down the dipping fault surface
Term
How folds form
Definition
as a response to compressive stresses
Term
Hinge
Definition
maximum curvature
Term
Limbs
Definition
sides of the fold
Term
Axial Plane
Definition
imaginary plane that cuts through the hinges of successive rock layers
Term
Joint
Definition
fractures along which there is NO movement
Term
Fault
Definition
fractions along where there is movement
Term
Strike-slip
Definition
from shear stress
Term
Normal Faults
Definition
tensional stress
Term
Reverse
Definition
compressional stresses
Term
Normal Faults
Definition
hanging walls
Term
Thrust Faults
Definition
kind of reverse fault where fault plane dips less than 30 degrees
Term
Reverse Faults
Definition
hanging walls move up
Term
Horst
Definition
uplifted rock bounded by normal faults
Term
Graben
Definition
down- dropped block bounded by normal faults
Term
Fault Scarp
Definition
exposure of the fault surface
Term
Fault Displacement
Definition
amount of offset or slip on a fault
Term
Fault Gouge
Definition
powdered rock in a fault zone
Term
Fault Breccia
Definition
shattered rock caused by fault movements
Term
Slickensides
Definition
polished fault surfaces
Term
Shear Zones
Definition
ductile faults
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