GEOL 1403 - Exam 3
test questions and
answers
Most rocks exhibit _________________________
deformation at shallow crustal depths.
brittle
Joints result from ____________________ stresses acting
on brittle rock.
tensional
What type of fault is this?
normal
What type of fault is this?
left-lateral strike-slip
What type of fault is this?
,reverse
What type of fault is this?
right-lateral strike-slip
Which is the footwall block.?
Block B
Horst and Graben refer to a type of topography
created when the earth's crust is pulled apart. This
process, called extension, can stretch the crust up
to 100% of its original size. As the crust is strained
in this way, _____________________________ develop and
blocks of the crust drop down to form grabens, or
valleys.
normal faults
, Reverse faults result from horizontal
________________________ stresses in brittle rocks.
compressional
A thrust fault is a special case of a
____________________ fault where the angle (dip) is
less than 45 degrees.
reverse
When an earthquake occurs, energy radiates in all
directions from its source. The source (within the
Earth) is also referred to as the ________.
focus or hypocenter
________ have the highest velocities (are the fastest
seismic waves).
P waves
The distance between a seismological recording
station and the earthquake source is determined
from the ________.
comparison of arrival times of P and S waves
The ______________________ scale measures of the total
energy released during an earthquake. It does not
directly measure the extent of building damage.
Moment Magnitude
________ is the maximum possible damage
designation on the Modified Mercalli scale.
X
test questions and
answers
Most rocks exhibit _________________________
deformation at shallow crustal depths.
brittle
Joints result from ____________________ stresses acting
on brittle rock.
tensional
What type of fault is this?
normal
What type of fault is this?
left-lateral strike-slip
What type of fault is this?
,reverse
What type of fault is this?
right-lateral strike-slip
Which is the footwall block.?
Block B
Horst and Graben refer to a type of topography
created when the earth's crust is pulled apart. This
process, called extension, can stretch the crust up
to 100% of its original size. As the crust is strained
in this way, _____________________________ develop and
blocks of the crust drop down to form grabens, or
valleys.
normal faults
, Reverse faults result from horizontal
________________________ stresses in brittle rocks.
compressional
A thrust fault is a special case of a
____________________ fault where the angle (dip) is
less than 45 degrees.
reverse
When an earthquake occurs, energy radiates in all
directions from its source. The source (within the
Earth) is also referred to as the ________.
focus or hypocenter
________ have the highest velocities (are the fastest
seismic waves).
P waves
The distance between a seismological recording
station and the earthquake source is determined
from the ________.
comparison of arrival times of P and S waves
The ______________________ scale measures of the total
energy released during an earthquake. It does not
directly measure the extent of building damage.
Moment Magnitude
________ is the maximum possible damage
designation on the Modified Mercalli scale.
X
