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Rock Deformation
geology
19
Geology
12/12/2009

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Term
A brittle substance characteristically has
Definition
a narrow span between the elastic limit and the plastic limit.
Term
The following would hinder the formation of fractures in rocks
Definition
high confining stress or uniform stress
Term
the essential conditions controlling the relative importance of brittle properties versus ductile properties of rocks are
Definition
all of these
Term
slow application of stress on rocks over a long period of time would most likely result in which type of behavior
Definition
ductile
Term
rapid application of stress on rocks over a short period of time would most likely result in which type of behavior
Definition
brittle
Term
many shallow earthquakes with low magnitures occur at lower crust or near transition between crust and mantle. The properties of rocks at these places are most likely to be
Definition
brittle
Term
The formation of reverse faults is due to
Definition
compressional stresses
Term
rocks that are ductile tend to be associated with
Definition
folds
Term
The san andreas dault is an example of a
Definition
right-lateral strike split fault
Term
in an anticline the limbs dip
Definition
away from the axial trace and the oldest rocks are in the center
Term
in a syncline the limbs dip
Definition
toward the axial trace and the youngest rocks are in the center
Term
in a syncline the limbs dip
Definition
toward the axial trace and the youngest rocks are in the center
Term
rock lauers exposed to surface in a zig-zag manner would imply the presence of
Definition
plunging folds
Term
The east african rift and other major rifts are a result of
Definition
an extension of the crust
Term
The topography of the basic and range province that encompasses Nevada and portions of the surrounding states has been generated by a system of north to south trending
Definition
normal faults
Term
The black hills of western south dakota is a
Definition
Domed structure
Term
in rocks, joints with orientations nearly perpendicular to the surface can be produced by
Definition
tensional stresses when rocks in the crust are folded
Term
Loch Ness, the home of a mythical monster, in scotland is situated on a
Definition
left-lateral strike-slip fault
Term
in an area, the same rocks appearing in the form of a parallel ridges would imply
Definition
a series of folds with their axes nearly horizontal