Laboratory Manual for Introductory Geology 4e

EXERCISE 2.2
Name:
Course:
Interpretations of Past Plate Locations Based on Paleoclimate Indicators (continued)
Section:
Date:
(c) On a separate sheet of paper, trace the continents (which are outlined with a heavy black line) with their glaciated
areas (outlined in blue). Cut out the continents and reconstruct the continental glacier by fitting the continents
together and considering the ice-flow directions shown by the arrows. Mark the location of the central snowfield
on the map below with a colored pencil.
called the Ring of Fire surrounding the Pacific Ocean, whereas the centers of most
continents have none (FIG. 2.5). In the late 1900s, as technological advances provided
new insights into the nature of the ocean floor, we learned that submarine volcanoes
are found in every major ocean basin.
FIGURE 2.5 Worldwide distribution of active subaerial volcanoes. The orange line outlines the Pacific Ring of Fire.
Iceland
Indonesia
(Krakatau)
Japan
(Mt. Fuji)
Marianas
Philippines
(Mt. Pinatubo)
Aleutians
Cascades
(Mt. St. Helens)
Hawaiian Islands
Yellowstone
Basin
and
Range
Galápagos
Cameroon
(Lake Nyos)
East
African
Rift
Andes
Scotia
Ring of Fire
2.3 EARLY EVIDENCE FOR PLATE TECTONICS
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