Geology you can hold in your hand.
Silurian-aged sandstone from the Bloomsburg Formation collected in Little Fort Valley, VA.
To explore a cut and polished sample of this diamictite, click here:
Lycopsid bark from the Pennsylvanian-age Allegheny Formation, collected on Corridor H in West Virginia.
Eocence-aged basalt from the Mole Hill volcanic neck in Rockingham County, VA.
To explore an uncut sample of this diamictite, click here:
Migmatite from Orange Springs Farm, near Unionville, Virginia. Partial melting of this schist occurred during the late Ordovician Taconian Orogeny (~460 Ma). Sample courtesy T. Keller Grayson.
Eocene-aged hypabyssal andesite with anorthosite xenolith dated to ~1.4 Ga. Possible Grenvillian-age crust under Cristo Rey.
A slab of differentially-weathered Archean gneiss from the Spanish Peaks region of the Gallatin Range, Montana. Part of the Wyoming Craton.
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