Geology you can hold in your hand.
Pressure solution seams in Devonian-aged Helderburg Group limestone from Corridor H.
Reddish quartz in this Neoproterozoic metasedimentary rock.
Meteorite impactite layer? Volcaniclasitics? YOU be the judge.
Flip side of this sample: gigapan.com/gigapans/189958
Fossil aquatic reptile from the Triassic. Specimen loaned by Alex Hastings, curator of paleontology, Virginia Museum of Natural History, Martinsville, VA.
Stromatolite from hypersaline Wilkins Peak Member of the Eocene Green River Formation, Wyoming. Collected at White Mountain escarpment:
Conifer cone from Poland.
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