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| You need to take a soils class, or maybe geology. The Loess hills surrounding St. Joe and Columbia are 90' deep in places, and caused by dry soil blowing out of the river beds to form the mounds. How dry and for how long and how windy did it have to be to make those formations? And they were all done after the last glaciation. Out in Colorado, Talking around Kit Carson, you can walk the hills, and the tops of the hills are big hollowed out bowls. There is grass growing in that area now, but, the only way I know of to make those types of formations is dry soil and wind, and lot's of it. I was taught in various classes, that the history of much of our West and Southwest consisted of droughts, many of them lasting a decade or more, this is on the timescale of several thousand years. Our 100 and some year "record" doesn't mean much. | |
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Global warming.
