Culpeper Basin, Sedimentary rock formation in Northern Virginia, United States.
The Culpeper Basin extends from Madison County to Frederick, Maryland, containing layers of siltstone, sandstone, and conglomerate rocks with diabase intrusions.
The basin formed during the breakup of Pangea approximately 250 million years ago when Africa and North America separated, creating the Atlantic Ocean.
The geological features of the Culpeper Basin provide essential research opportunities for scientists studying the Triassic period and early dinosaur habitats.
Multiple quarries throughout the basin extract building materials, including the reddish-brown sandstone used in constructing the Smithsonian Institution Castle.
The Boyds Sill, a large diabase formation within the basin, creates distinct geological patterns visible in exposed rock faces northeast of Dulles Airport.
GPS coordinates: 38.80428,-77.50388
Latest update: March 8, 2025 18:53
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