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USGS/Cascades Volcano Observatory, Vancouver, Washington

America's Volcanic Past
Rhode Island

"Though few people in the United States may actually experience an erupting volcano, the evidence for earlier volcanism is preserved in many rocks of North America. Features seen in volcanic rocks only hours old are also present in ancient volcanic rocks, both at the surface and buried beneath younger deposits." -- Excerpt from: Brantley, 1994

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Map, Location of Rhode Island

Volcanic Highlights and Features:
[NOTE: This list is just a sample of various Rhode Island features or events and is by no means inclusive. All information presented here was gathered from other online websites and each excerpt is attributed back to the original source. Please use those sources in referencing any information on this webpage, and please visit those websites for more information on the Geology of Rhode Island.]

  • Rhode Island
  • Rhode Island Regions

Rhode Island



Excerpt from:
   
Rhode Island Regions

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.


   





Excerpts from:

1) USGS/NPS Geology in the Parks Website, 2001

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01/28/03, Lyn Topinka