. Bulletin of the Geological Society of America. Geology. 216 G. P. AVRIGHT GLACIAL DAM IN THE ALLEGHENY RIVER of the rock-bottom of the Allegheny below Irvine has not been definitely determined (see the Warren Folio of the United States Geological Survey by Mr. Charles Butts, page 9). Still there can be no reasonable doubt. Figure 1.—Map of the Vicinity of Warren, Pennsylvania that the preglacial drainage of the upper part of Tionesta Creek was with that of the neighboring portions of the Allegheny to the north through Conewango Creek. The southern Drainage The point, however, on which we nee
. Bulletin of the Geological Society of America. Geology. 216 G. P. AVRIGHT GLACIAL DAM IN THE ALLEGHENY RIVER of the rock-bottom of the Allegheny below Irvine has not been definitely determined (see the Warren Folio of the United States Geological Survey by Mr. Charles Butts, page 9). Still there can be no reasonable doubt. Figure 1.—Map of the Vicinity of Warren, Pennsylvania that the preglacial drainage of the upper part of Tionesta Creek was with that of the neighboring portions of the Allegheny to the north through Conewango Creek. The southern Drainage The point, however, on which we need light is: What was the southern line of drainage during the earliest stages of the glacial invasion, when. 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 Geological Society of America. [New York : The Society]
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectgeology, bookyear1890
