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17 April 2012

Strained Antietam Formation sandstone

I collected this sample the weekend before last on the Blue Ridge Thrust Fault field trip led by Alan Pitts. It’s a chunk of the Antietam Formation quartz sandstone, a Cambrian beach deposit. The face we photographed measures 15 cm by 12 cm. [gigapan id=”103122″] link It definitely looks best in full screen mode, so please feel encouraged to click through and explore it a bit. You’ll notice some great …


26 May 2011

Tumbling Run: New Market/Lincolnshire contact

Here’s a gigapan I shot yesterday, looking north at the contact between the New Market and Lincolnshire Formations at the classic “Tumbling Run” outcrop south of Strasburg, Virginia: [gigapan id=”78234″] See if you can find the E. coli plush toy I included, or the cm-scale pencil! As usual, you can see it full screen, by clicking on the word “Gigapan” in the lower right.


21 May 2011

The grave of Charles Walcott

Callan pays a visit to the grave of celebrated paleontologist and geological administrator Charles D. Walcott.