Geology of the Glaciers
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email@example.comCharles P. ForbesMay 27, 2012
Comprehensive ReferencesMyers, et al., Outcrop Descriptions, Geology of Wisconsin Outcrop Description Series (Complete), Madison, 1978. View Full EntryReuss et al., On the Trail of the Ice Age: A Hiker's and Biker's Guide to Wisconsin's Ice Age National Scientific Reserve and Trail., n.p., 1976. View Full Entry
Major ReferencesStar Lake Nature Trail, NHAL State Forest Visitor's Guide, 2018, P. 47 [map p. 45], Minocqua, 2018. View Full EntryClough, G. Wayne, Panama Exposed, Smithsonian Magazine, Vol. 42. #2. June, 2012, P. 8., Washington, 2012. View Full EntryLaBastille, On the Trail of Wisconsin's Ice Age, National Geographic, V.152 #2 Aug 1977 p.182, Washington, 1977. View Full EntryMickelson et al., Geologiy of the Ice Age National Scenic Trail, Madison, 2011. View Full EntryPielou, Evelyn, After the Ice Age, Chicago, 1991. View Full Entry
+++RETHINKING CAUSES OF GLACIATION
The article, "Panama Exposed," [See bibliography] speaks of the rocks exposed in the 2012 expansion of the Panama Canal, stating, "Using new geological-dating techniques, [Smithsonian geologists] conclude that the isthmus connecting North and South America arouse not 3.5 million years ago, the prevailing view, but as long ago as 15 million years. That revision has huge consequences, because the separation of the Atlantic from the Pacific would have had major climatic effects. It has been linked, for instance, to the onset of glaciation in North America. If the new date is correct, the causes of glaciation and other global upheavals will have to be rethought."