mpollock September 15th, 2009
Last weekend, Dr. Judge’s and Dr. Pollock’s Structure and Mineralogy classes took a field trip to central Pennsylvania. It rained on Saturday, but that didn’t stop us from having a great time. We saw the most amazing pencil structures in the Reedsville Shale.
In the Bald Eagle Formation just a short drive down the road, we found textbook examples of slickenfibres. Slickenfibres are elongated minerals that grow along a fault plane parallel to the direction of motion.
Next, we went to the Bear Valley Strip Mine. The beautifully exposed folds and giant iron concretions are simply breathtaking!
Finally, we stopped to sample some (very orange) acid mine drainage at a nearby pump slope.
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