Geology you can hold in your hand.
Sediment from a point bar in Accotink Creek, Fairfax, VA, USA.
Mudcracks in limey red shale with a mud chip and raindrop impressions.
Eight mineral grains from the "debris" in the Ace of Diamonds mine in Herkimer, New York.
310-Ma Mariopteris from Poland. Sample collected by Andrezej Gorski.
Double-terminated quartz crystals, sometimes called Herkimer diamonds, from the Ace of Diamonds mine in Herkimer, New York.
310-Ma Annularia radiata from Poland. Collected by Andrezej Gorski.
with cross-beds and pebbles. Corridor H, West Virginia.
Flip side of the sample here: www.gigapan.com/gigapans/187778
Sample courtesy of Ken Rasmussen and his colleague, the Baltimore-based archaeologist Henry Ward.
with stylolites and primary sedimentary features
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