The Pleistocene of Indiana and Michigan and the History of the Great LakesU.S. Government Printing Office, 1915 - 527 pages |
Contents
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Common terms and phrases
20 feet altitude basins beaches beds blue bluff bowlder belt Cass County channel clay clayey depth Discusses district East White eastern edge Elkhart esker feet of drift Fort Wayne moraine Geology and Nat glacial drainage glacial lakes Grand River gravel plain gravelly Huron Huron-Erie lobe ice border ice sheet Illinoian Indiana inner border interlobate Joseph River Kalamazoo River kames knolls Lagrange Lagrange County Lake Maxinkuckee Lake Michigan Lake Michigan lobe Lapeer County loess Maxinkuckee miles wide nearly northeast northern northward northwest Ohio outer border outlet outwash apron penetrated portion pre-Wisconsin probably reentrant Rept ridges rock Saginaw lobe sand and gravel sandy sea level slope soil southeast southeastern southward southwest southwestward square miles stream striæ surface Survey swamp Tekonsha thickness till plain Tippecanoe Tippecanoe River topography Township tract U. S. Geol vicinity Wabash western westward White River width Wisconsin Wisconsin drift
Popular passages
Page 335 - and also south of a line running westward across Lake Michigan from a point south of Frankfort the Algonquin beach was not affected at all by the uplift. This line was a sort of "hinge" line for the movement. Kirkfield at the head of the Trent Valley outlet
Page 329 - of glacial lakes, the like of which for size and complicated history is not known in any other part of the world. The total area covered by their waters from first to last was much greater than the entire area of the present Great Lakes, but the whole area was not covered at
Page 326 - The glacial epoch as a whole has been found to be made up of at least four distinct stages of glaciation separated by intervening warm periods when the ice sheet either shrank to relatively small proportions or disappeared altogether. The last ice sheet deposited what is known as the Wisconsin drift.
Page 335 - a vastly greater area than that of the Great Lakes, but within this area it affected the northern parts most. South of a line running through the middle of the "thumb" of Michigan and across the south arm of Lake Huron about S. 68°
Page 333 - and readvance, that took place in the Huron-Erie basin. The evidence of these oscillations, however, are not generally so well marked, because critical changes were not produced by them; but some of the stronger moraines mark readvances that override beach ridges which had been made just previously. The Port Huron
Page 338 - South of this hinge line the Nipissing beach is horizontal at about 15 feet above present lake level. North of it the beach rises at the rate of about 7 inches to the mile in a direction about N. 22°
Page 331 - at least 40 or 50 miles east of Buffalo, NY, and covered a considerable part of southern Ontario. Its outlet was westward through the Grand River channel. Its altitude above sea level was at first 710 feet, but by
Page 37 - ANDREWS, EDMUND, The North American lakes considered as chronometers of postglacial time: Trans. Chicago Acad. Sci., vol. 2, 1870, 23 pp.,
Page 338 - has been found at many places farther south in a position a little more than halfway up from the present shore to the Nipissing beach. On the north shore of Lake Superior
Page 333 - In all probability the retreating ice front performed here the same series of oscillations, with strongly marked steps of retreat and readvance, that took place in the Huron-Erie basin. The evidence of these oscillations, however, are not generally so well marked, because critical changes were not produced by them; but some of the stronger moraines mark readvances that override beach ridges which had been made just previously.