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11 Cards in this Set

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What caused the laramide Orogeny that is responsible for uplifting the Colorado Plataeu?

a. Foundering of the subducted Kula plate into the deep asthenosphere 55Ma.

b. Hacnge to shallow subduction of the Kula Plate 60 Ma.

c. Change to steep subduction of the KUla Plate 60 Ma.
B
How are the rocks at Bryce Canyon (Claron Formation) different from those exposed at zion (Navojo Sandstone) andt the Grand Canyon (Redwall Limestone)?

a. The rocks of the Claron Formation were deposited in a large lake.

b. The claron is comprised of sedimentary rock.

c. The claron formation is older than the rocks a Zion and Grand Canyon.

d. All of the above.
A
What is the origin of the evaporate deposits of the paradox Formation (Canyonlands)?

a. Evaporation of ocean water trapped in basins during regression of the Permian sea.

b. Evaporation of fresh water lakes during a marine transgression(rising sea level).

c. Evaporation of playa lakes-like Great Salt Lake- during basin and range extension.
A
T OR F. The great unconformity of the GRAND Canyon is a non-conformity and, in some places, and angular unconformity.
A. TRUE
wHAT CAUSES THE STEEP cliff faces of the virgin river valley at zion national park?

a. Mass wasting of the thickly bedded navajo sandstone.

b. Mass wasting of the thinly bedded Kayenta formation.

c. Dissolution by groundwater (Karst)flowing through the navajo sandstone.

d. Meandering of the Virgin River.
A
wHAT Ithe relationship between the pierre shale exposed at Badlandsand the Mancos Shale exposed at Mesa Verde?

a. They were both deposited during transgressionof the cretaceous Sea.

b. They were the same formation.

c. They are both exposed in the Grand Canyon as well.
A.
wHICH OF THE FOLLOWING IS NOT CAUSED BY DIFFERENTIAL WEATHERING?

A.Hoodoos
b. Pinnacles
c. Mesas
d. Columnar jointing
D.
The rocks exposed at the Grand Canyon much of the continent's history spanning fom what to what.

a. Middle Permian (~250 Ma) to the present.

b. Early Cambrian (~540 Ma) to the middle Permian (~250)

c. Late Precambrian (~1.75 Ga) TO middle permian (~250 Ma)

d. Late precambrian (1.75 Ga) to Cmbrian (~540 Ma)
C
Complete the sentence: The process of Frost wedging......

a. Is caused by the expansion of water when it freezes.

b. Is the cause of much of the mass wasting at Zion and Arches NP.

C. Is a type of Physical weathering process.

d. All of the above.
d.
Who was the first non-native American to explore the Grand Canyon?
J. WESLEY POWEL, 1869
kARST sYSTEMS LIKE THOSE AT MAMMOTH CAVE, ARE PRODUCTS OF WHAT PROCESS?

A. sTREAM CHANNEL DOWN-CUTTING

B. Physical weathering of weal rocks.

c. Chemical weathering (dissolution) of soluble rocks.
d. Glacial erosion
c.