Exam (elaborations)
GEOL 2110 Exam 3 With Correct Answers
- Course
- GEOL 180
- Institution
- California State University - Sacramento
GEOL 2110 Exam 3 With Correct Answers
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Q&AGEOL 2110 Exam 3 With Correct
Answers
__________ is the line of intersection between the axial plane and the beds
of folded rock. - Answers Axis of a fold
Two of the westernmost structural basins of the United States are named -
Answers Williston and Permian.
Synclines are characterized by layers that - Answers are concave
upward.
The onset of deposition of molasse sediments in the foreland basin
indicates that - Answers the mountain chain has worn down and
isostatic uplift has begun.
With respect to a typical metamorphic belt, a fold-and-thrust belt lies -
Answers toward the continental interior, near the boundary with the
foreland basin.
Stretching or weakening of the crust (without rifting) as North America
moved over a hot spot may have caused the development of the -
Answers Michigan and Permian basins.
, Q&A
An ophiolite is made up of part of the - Answers mafic seafloor of the
oceanic plate.
Select the characteristic below that is NOT consistent with continental
rifting. - Answers Multiple thrust faults and other compression
features.
A failed rift is oriented roughly - Answers perpendicular to the rifted
margin of the broken continent.
Deep-seated crustal faults dating from the Proterozoic may have caused
powerful earthquakes with epicenters near __________ during 1811-1812.
- Answers New Madrid, Missouri
_________ is the name given to microcontinents that have attached
themselves to larger landmasses, especially the western part of North
America. - Answers Exotic terranes
The downwarping of the lithosphere beneath an actively forming mountain
chain continues for some distance beyond the fold-and-thrust belt, thus
producing a(n) - Answers elongate foreland basin.
A special type of graben that develops during early rifting of new plate
boundaries is called a - Answers rift valley.
, Q&A
Marine sediment lying above evaporate deposits beneath the Red Sea
shows us that the - Answers Indian Ocean has only recently gained
access to the widening Red Sea.
During the __________ epoch, a long seaway occupied the foreland basin
to the east of the Andes Mountains. - Answers Miocene
__________ is the process of mountain building. - Answers
Orogenesis
Ophiolites consist of - Answers ultramafic rocks including pillow
basalts.
The Appalachian Basin is to the Appalachian Mountains as the Williston
Basin is to the - Answers Rocky Mountains.
The age of eastern African rift valleys is - Answers Cenozoic
The Black Hills of South Dakota are an example of a - Answers
structural dome.
The center of a triple junction with a failed arm is at the - Answers
Afar Triangle.
The present process of mountain- building in the Andes began during -
Answers Mesozoic
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