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Nickens, Dan - Aug 13,2017
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Instead of sand or even pebbles the lakeshore was revealed to be thin blades of rock. Instead of climbing ashore and risking slicing a tire, I stopped and waded ashore (foot wounds heal easier than patching a sliced tire far from repair shops).
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Nickens, Dan - Aug 13,2017
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Out on the shaley beach lay the Fort Payne Formation from the Early Mississippian Period (Part of the Paleozoic Era, 360 to 347 Ma). In the period when the rocks were born, the world was a different place. Sea levels fluctuated with mad indecision. It was hot and humid, with an atmosphere of up to 40% oxygen. Wildfires were rampant in the verdant forests that covered the land. The Appalachian Mountains were just being pushed into existence. It was a time of amphibians. Their population exploded in the sweltering, swampy deltas. On land insects became giants in the oxygen-rich environment. Plants developed bark that bacteria had not yet figured out how to break down. Bark fell into the swamps to be consumed by oceans where oxygen deprived zones forming organic rich sapropelic layers were destined to become the world's predominant coal resources.
The razor thin rock on the beach are shale, mostly silty but calcareous and sandy in part. Geodes up to 2' in diameter have been found in the Ft. Payne Formation. There was too much pain from the sharp shale for bare feet to search for the elusive geodes. But the shale ultimately weathers to grayish-yellow finely gritty soil. I'd like to come back when that happens.
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Ken Leonard - Aug 13,2017
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Oh, so cool. And sharp thinking on your part. We flew commercial back from upstate NY today, sorry to miss the gang but was too windy and choppy to land at our place. As we flew approach to Tampa, we over flew the new sinkhole that made national news. You could see it clearly from the air. One wonders what formations will be made of the human inspired junk laying there, waiting to dissolve or harden.
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Carr, Frank - Aug 14,2017
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Alas Professor Nickens, I've found a debatable comment in your treatise. Foot wounds heal slower than on any other part of the body--or so I'm told. But I would't recommend walking on your hands on that stuff either.
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Nickens, Dan - Aug 14,2017
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I defer to your expertise, Doctor Carr.
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Carr, Frank - Aug 15,2017
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Well, actually Dan it was my doctor who just told me that info, and since it was just a day ago I've not yet forgotten it yet.
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