Tri-Coastal Ride 2014

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Our second stop is north of Boulder, where we traverse Six Mile Fold. This limestone is a nice example of pressure solution as a deformation mechanism. The seam running horizontally in the picture has lost material, while the calcite vein running vertically has gained material, producing a net bulk change in shape.

All images copyright © 2014 F.W. Vollmer and may not be used without permission.