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Places of Geologic Significance
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Managed By: Icon Here Interested Geologists
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A category in which to place interesting rock, sand, soil formations and deformations which have been created by natural (not human) forces.
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Image for Rappahannock River Fall Line ~ Fredericksburg, VAview gallery

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Places of Geologic SignificanceRappahannock River Fall Line ~ Fredericksburg, VA

in Places of Geologic Significance

The fall line, the point where the Rappahannock becomes tidal. A major barrier for man and fish. Is crossed by U.S Route 1, the Jefferson Davis Hwy.

posted by: Groundspeak Premium Member garmin_geek

location: Virginia

date approved: 3/24/2009

last visited: 6/19/2010

Image for Alum Spring Rock - Fredericksburg, VAview gallery

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Places of Geologic SignificanceAlum Spring Rock - Fredericksburg, VA

in Places of Geologic Significance

The Alum Spring sandstone cliff is a geological formation about 100 million years old.

posted by: Groundspeak Regular Member La de Boheme

location: Virginia

date approved: 7/21/2008

last visited: 3/11/2012

Image for Potomac River and Catoctin Mountain at Point of Rocks, MDview gallery

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Places of Geologic SignificancePotomac River and Catoctin Mountain at Point of Rocks, MD

in Places of Geologic Significance

At this location complex geological forces allowed the Potomac River to cut through the Catoctin Mountain, and the rock from this area was used to form the walls of the C&O Canal and the bed of the railroad tracks of the B&O Railroad.

posted by: Groundspeak Premium Member NorStar

location: Maryland

date approved: 11/12/2014

last visited: 7/6/2013

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