. Elements of geology : a text-book for colleges and for the general reader. Geology. Fig. 928.—Bed-rock scored with glacial marks, near Amherst, Ohio. (From a photograph by Chamberlin.) parent ledge from which these great fragments were torn, and thus to trace the directioyi of their transportation. From many observations of this kind it has been determined that in New England the bowlders have come usually from the northwest, in Ohio from the north, and in Iowa from the northeast. In other words, from the highlands of Canada and a ridge running thence northwestward (Archaean area), the gener
. Elements of geology : a text-book for colleges and for the general reader. Geology. Fig. 928.—Bed-rock scored with glacial marks, near Amherst, Ohio. (From a photograph by Chamberlin.) parent ledge from which these great fragments were torn, and thus to trace the directioyi of their transportation. From many observations of this kind it has been determined that in New England the bowlders have come usually from the northwest, in Ohio from the north, and in Iowa from the northeast. In other words, from the highlands of Canada and a ridge running thence northwestward (Archaean area), the general direction of travel has been southeast, south, and southwest. North of the Archaean areas the travel was probably in some cases even northward. The distance carried may be only a few miles, or may be. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original LeConte, Joseph, 1823-1901. New York : D. Appleton and Co.
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectgeology, bookyear1892
