Granite with Basalt Dike
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Basaltic magma intruded into a fracture in the pink granite of the Webhannet Pluton. Thus, the basalt is younger than the granite. This is an example of a crosscutting relationship that geologists use to determine the sequence of geologic events.
Location: Bald Hill Quarry, Wells, York County
Gift of Millennium Granite Quarry and Stoneworks
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