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View the Geologic Time Scale
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Volcanic Highlights and Features:
[This list is just a sample of
various Rhode Island volcanic features or events and is by no means inclusive.]
- Rhode Island
- Rhode Island Regions
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The Appalachians:1
The Appalachians are old. A look at rocks
exposed in today's Appalachian mountains reveals
elongate belts of folded and thrust faulted marine
sedimentary rocks, volcanic rocks and slivers of
ancient ocean floor. Strong evidence that these
rocks were deformed during plate collision. The
birth of the Appalachian ranges, some 480 million
years ago, marks the first of several mountain
building plate collisions that culminated in the
construction of the supercontinent Pangea with the
Appalachians near the center.
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Excerpts from:
1) USGS/NPS Geology in the Parks Website, 2001
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