Part B
Mountain Geology
The Appalachian Mountains are one of the most prominent mountain ranges in North America. The Paleozoic Appalachians are hundreds of millions of years older than the largely Cenozoic Rocky Mountains and Cascade Range to the west. Also, unlike the volcanic Cascade Range, the Appalachians have a tectonic origin and were formed by three separate mountain-building phases. The final phase, the Alleghenian Orogeny, resulted from a continent-continent collision related to the formation of the supercontinent Pangea.
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Figure 11-3. A geologic map for part of central Pennsylvania. |
Answer Quiz Me! questions B16 through B25 using the Geologic Map of Central Pennsylvania (see the PDF link below). If necessary, you can refer to your rock identification charts.
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Geologic Map of Central Pennsylvania |
Map Scale
Explanation of Map Units
Geologic Map