. Annual report. New York State Museum; Science; Science. THE GEOLOGICAL HISTORY OF NEW YORK STATE 99 from Whittlesey was westward by a large river flowing through small Lake Saginaw and into Lake Chicago, which latter still emptied through the Illinois river. At a still later stage (figure 32) Lake Saginaw merged with the waters of the Erie basin to form the large Lake Warren which extended along the ice front eastward nearly to central New York. As the map clearly shows, the Finger lakes basins of New York were then occupied by Warren waters, while Niagara Falls were not then in existence be
. Annual report. New York State Museum; Science; Science. THE GEOLOGICAL HISTORY OF NEW YORK STATE 99 from Whittlesey was westward by a large river flowing through small Lake Saginaw and into Lake Chicago, which latter still emptied through the Illinois river. At a still later stage (figure 32) Lake Saginaw merged with the waters of the Erie basin to form the large Lake Warren which extended along the ice front eastward nearly to central New York. As the map clearly shows, the Finger lakes basins of New York were then occupied by Warren waters, while Niagara Falls were not then in existence because that region was also covered by Lake Warren. Lake Warren continued to discharge westward into Lake Chicago and the Mississippi river until a very late stage, when the waters had worked their way along the border of the Ontario ice. Fig. 32 Glacial Lake Warren. At this stage the discharge of the lake was still westward to Lake Chicago and the Mississippi river, while the east- ern end of the lake covered most of the Finger Lakes region of New York. Modified from Taylor & Leverett, U. S. G. S. lobe into the Mohawk valley which was then occupied by a large glacial lake (held up by the Ontario ice lobe on the west and the Champlain-Hudson lobe on the east) and thence into the Hud- son valley. Thus, for the first time, the Great Lakes drainage passed eastward into the Atlantic ocean. This great volume of water draining eastward was often in the form of distinct streams with the ice front for north wall and the high land of the Helder- berg escarpment for wall on the south. Many of these glacial stream channels, which are still plainly visible, have been studied and mapped by Professor 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 New York State Museum. Albany : University of the State of N
Size: 2236px × 1118px
Photo credit: © Library Book Collection / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1900, booksubjectscience, bookyear1902
