Shale
Shale
Sandstone
Vesicles
Limestone
Basalt
Use your understanding of Bowen’s reaction series (Figure 3.20) to
explain how partial melting can generate magmas having different
compositions.
Each statement describes how an intrusive feature appears when
exposed at Earth’s surface due to erosion. Name the feature.
a. A dome-shaped mountainous structure flanked by upturned
layers of sedimentary rocks.
b. A vertical wall-like feature a few meters wide and hundreds of
meters long.
c. A huge expanse of granitic rock forming a mountainous terrain
tens of kilometers wide.
d. A relatively thin layer of basalt sandwiched between layers of
sedimentary rocks exposed on the side of a canyon.
9
8
During a field trip with your geology class you visit an exposure of
rock layers similar to the one sketched here. A fellow student suggests that the layer of basalt is a sill. You, however, disagree. Why
do you think the other student is incorrect? What is a more likely
explanation for the basalt layer?
10
89
Companion Website
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.
Shale
Sandstone
Vesicles
Limestone
Basalt
Use your understanding of Bowen’s reaction series (Figure 3.20) to
explain how partial melting can generate magmas having different
compositions.
Each statement describes how an intrusive feature appears when
exposed at Earth’s surface due to erosion. Name the feature.
a. A dome-shaped mountainous structure flanked by upturned
layers of sedimentary rocks.
b. A vertical wall-like feature a few meters wide and hundreds of
meters long.
c. A huge expanse of granitic rock forming a mountainous terrain
tens of kilometers wide.
d. A relatively thin layer of basalt sandwiched between layers of
sedimentary rocks exposed on the side of a canyon.
9
8
During a field trip with your geology class you visit an exposure of
rock layers similar to the one sketched here. A fellow student suggests that the layer of basalt is a sill. You, however, disagree. Why
do you think the other student is incorrect? What is a more likely
explanation for the basalt layer?
10
89
Companion Website
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.