Geology Reference
In-Depth Information
3. The ocean separating Laurentia from Baltica is
called the
a. _____ Panthalassa;
b. _____ Tethys;
c. _____ Iapetus;
d. _____ Atlantis;
e. _____ Perunica.
4. Which mobile belt is located along the eastern side of
North America?
a. _____ Franklin;
b. _____ Cordilleran;
c. _____ Ouachita;
d. _____ Appalachian;
e. _____ Hercynian.
5. During deposition of the Sauk Sequence, the only
area above sea level besides the Transcontinental Arch
was the
a. _____ cratonic margin;
b. _____ Canadian shield;
c. _____ Queenston Delta;
d. _____ Appalachian mobile belt;
e. _____ Taconic Highlands.
6
.
Weathering of which highlands produced the Queens-
ton Delta clastic wedge?
a. _____ Transcontinental Arch;
b. _____ Acadian;
c. _____ Taconic;
d. _____ Sevier;
e. _____Caledonian.
7. Which of the following resulted from intracratonic
deformation?
a. _____ Antler Highlands;
b. _____ Acadian Highlands;
c. _____ Ancestral Rockies;
d. _____ Caledonian Highlands;
e. _____ Taconic Highlands.
8. The European Old Red Sandstone is the equivalent of
the North American
a. _____ Queenston Delta clastic wedge;
b. _____ Capitan Limestone;
c. _____ Caledonian Delta clastic wedge;
d. _____ Oriskany Sandstone;
e. _____ Catskill Delta clastic wedge.
9. Which was the fi rst Paleozoic orogeny to occur in the
Cordilleran mobile belt?
a. _____ Acadian;
b. _____ Alleghenian;
c. _____ Antler;
d. _____ Caledonian;
e. _____ Ellesmere.
10. A major transgressive-regressive cycle bounded by
cratonwide unconformities is a(n)
a. _____ cratonic sequence;
b. _____ biostratigraphic unit;
c. _____ orogeny;
d. _____ shallow sea;
e. _____ cyclothem.
11. Discuss how plate movement during the Paleozoic Era
affected worldwide weather patterns.
12. What was the relationship between the Ouachita orog-
eny and the cratonic uplifts on the craton during the
Pennsylvanian Period?
13. Discuss why cratonic sequences are a convenient way to
study the geologic history of the Paleozoic Era.
14. According to estimates made from mapping and cor-
relation, the Queenston Delta contains more than
600,000 km
3
of rock eroded from the Taconic High-
lands. Based on this fi gure, geologists estimate that the
Taconic Highlands were at least 4000 m high. They also
estimate that the Catskill Delta contains three times as
much sediment as the Queenston Delta. From what you
know about the geographic distribution of the Taconic
Highlands and the Acadian Highlands, can you estimate
how high the Acadian Highlands might have been?
15. What evidence indicates that the Iapetus Ocean began
closing during the Middle Ordovician?
16. Based on the discussion of Milankovitch cycles and
their role in causing glacial-interglacial cycles (see
Chapter 14), could these cycles be partly responsible
for the transgressive-regressive cycles that resulted in
cyclothems during the Pennsylvanian Period?
17. How are the Caledonian, Acadian, Ouachita, Hercyn-
ian, and Alleghenian orogenies related to modern con-
cepts of plate tectonics?
18. In your travels, you notice that many buildings in the
eastern United States, as well as numerous castles in the
United Kingdom, seem to be constructed of the same
coarse-grained red sandstones and conglomerates. How
would you account for such a coincidence? Or is it
really a coincidence? Explain.
19. How does the origin of evaporite deposits of the Kas-
kaskia Sequence compare with the origin of evaporites
of the Tippecanoe Sequence?
20. Paleographic maps of what the world looked like dur-
ing the Paleozoic Era can be found in almost every
Earth history book and in numerous scientifi c journals.
What criteria are used to determine the location of
ancient continents and ocean basins, and why are there
minor differences in the location and size of these
paleocontinents among the various topics and articles?
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