A Resource for Information on the Commonwealth's Geology
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Twenty years of change at Cedar Island
Cedar Island is one of Virginia’s barrier islands that separates the Eastern Shore from the Atlantic Ocean. Barrier islands are dynamic environments that respond quickly to environmental changes. Over time barrier islands move, and their shorelines migrate. During the past two decades shoreline change at the south end of Cedar Island has been dramatic. Compare the 1994 […]
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At the Pluton’s Edge
When large quantities of magma intrude and solidify in the Earth’s crust they form bodies of intrusive igneous rock known as plutons. The featured image nicely illustrates the edge (geologic contact) of a granitic pluton in the Blue Ridge Mountains of central Virginia. The granite is part of the 706 ± 4 million year old […]