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Companion Website
A. A. Grand Canyon
B.
B. Close up of Vishnu
Schist (dark color)
Inner
gorge
One of the rock outcrops in the accompanying photos consists
mainly of metamorphic rock. Which do you think it is? Explain why
you ruled out the other rock bodies.
4
Refer to the accompanying diagram and match each labeled area
with the appropriate environment listed below:
a. contact metamorphism
b. subduction metamorphism
c. regional metamorphism
d. burial metamorphism
e. hydrothermal metamorphism
6
Based on the information provided in Figure 7.22, complete the
following:
a. Describe how the metamorphic grade changes from west to east
across New England along line A-B.
b. How might these metamorphic rocks have formed?
c. Are these zones of metamorphism consistent with the current
tectonic setting of New England?
7
Examine the accompanying photos that show the geology of the
Grand Canyon. Notice that most of the canyon consists of layers of
sedimentary rocks, but if you were to hike into the inner gorge you
would encounter the Vishnu schist, a metamorphic rock.
a. What process might have been responsible for the formation of
the Vishnu schist? How does this process differ from the
processes that formed the sedimentary rocks that are atop the
Vishnu schist?
b. What does the Vishnu schist tell you about the history of the
Grand Canyon prior to the formation of the canyon itself?
c. Why is the Vishnu schist visible at Earth’s surface?
d. Is it likely that rocks similar to the Vishnu schist exist elsewhere
but are not exposed at Earth’s surface? Explain.
5
Companion Website
www.mygeoscienceplace.com
The Essentials of Geology, 11e companion Website contains numerous multimedia resources accompanied by assessments
to aid in your study of the topics in this chapter. The use of this site's learning tools will help improve your understanding
of geology. Utilizing the access code that accompanies this text, visit www.mygeoscienceplace.com in order to:
• Review key chapter concepts.
• Read with links to the Pearson eText and to chapter-specific web resources.
• Visualize and comprehend challenging topics using the learning activities in GEODe: Essentials of Geology and the
Geoscience Animations Library.
• Test yourself with online quizzes.
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