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You are browsing the archive for 2014 February 20.

20 February 2014

Stylolite from the Helderberg Group, exposed on Corridor H

While out on the Corridor H field trip last week before the heavy snow, I found this squeal-inducingly-lovely example of a stylolite in Helderberg Group limestones (Devonian passive margin carbonates): The stylolite is a pressure-solution surface, made especially apparent in this example because of the starkly different grain sizes and colors on either side of the dissolved-away rock: This is a gorgeous sample to explore in macro GigaPan view. Enjoy: …

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