GEOL 104 Latest
2025 Final Exam
With Questions and
Correct Verified
Answers 100% Pass
Geologic Contact - ANSWER-the boundary
surface between two formations. Comparable to
,other contacts such as faults, unconformities,
and intrusive contacts.
Conformable Contact - ANSWER-No time gap
between boundary surfaces
Unconformable Contact - ANSWER-There is a
Time gap between boundary surfaces.
Isotopic Dating - ANSWER-dating methods
based on scientific knowledge about the rate at
which various radioactive isotopes of naturally
occurring elements transform themselves into
other elements by losing subatomic particles.
This rate is CONSTANT.
Stable isotopes do not undergo change
overtime, while unstable isotopes undergo
radioactive decay by releasing energy but
creating a different element.
283U to 206Pb has a half life of 4.5 billion
years, roughly the age of Earth!
, Orogen - ANSWER-a belt of the earth's crust
involved in the formation of mountains. This
mountain building leads to deformation in rocks.
Rock Derformation - ANSWER-Displacement:
Change in location
Rotation: Change in direction
Distortion: Change in shape
- Stretching
- Shortening
- Shear strain
Deformation Rate - ANSWER-Rapid = Brittle:
Atomic bonds break forever and lead to
fracturing.
Slow = Ductile: Some bonds break but are
quickly reformed allowing for change of shape
without fracturing.
Axial Plane - ANSWER-Plane that marks the
center of the fold.