This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1907 Excerpt: ...of the lake, but in many places they have been destroyed by erosion since their formation. A very good example exists in Lake Park, Milwaukee, where a rather wide shelf about ten feet above the present level of the lake ends abruptly at the foot of a bluff nearly eighty feet high. This terrace is traceable for several ...
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This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1907 Excerpt: ...of the lake, but in many places they have been destroyed by erosion since their formation. A very good example exists in Lake Park, Milwaukee, where a rather wide shelf about ten feet above the present level of the lake ends abruptly at the foot of a bluff nearly eighty feet high. This terrace is traceable for several miles north of Milwaukee. At Port Washington and Sheboygan the terrace is again visible i from Algoma to Sturgeon Bay the terrace is traceable, and it appears at intervals on the east shore of Green Bay but not on the low west shore. On some portions of the shore there are more than one such terraces, indicating the occupation of successive levels by the lake. In the closing stages of the glacial time the general shape of the basins of the Great Lakes was probably very much as now, but the outline of the lakes was very different, for they stood at a much higher level. With the passage of the ice Wave Cut Terrace at Lake Park, Milwaukee from the land by melting there was an over-abundance of water, which could not pass off to the north through the natural drainage of the St. Lawrence system, for the northern outlet of this channel remained dammed by ice long after the southern portion was free. In consequence of this the waters in the lake basins rose until they overtopped the barriers to the south and found channels which would carry their waters away to the south. The record of the former higher levels and the outlets have been very plainly left in the abandoned beaches and outlet channels. Lake Ontario drained to the south through the valley of the Mohawk and Hudson; Lake Erie through the Maumee and Wabash to the Ohio and the Mississippi; Lake Michigan through the Chicago river to the Ohio and Mississippi, and perhaps at another time, in par...
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All Editions of Wisconsin, Its Geology and Physical Geography. a Popular Account of the Natural Features and Climate of the State for Students and General Readers
