. Annual report of the Regents. New York State Museum; Science. rl08 NEW YORK STATE MUSEUM This point, when established and finally settled, will be a very interesting as well as needful one in the history of each of the lake systems. Comparison of the abandoned deltas with the deltas forming in the present lakes . In all normally formed deltas the interaction between stream and lake tends to the production of a fan shaped outline in the deposition of the stream borne material. The delta apex is turned up stream or landward with the point of maximum convexity in its periphery practically oppos
. Annual report of the Regents. New York State Museum; Science. rl08 NEW YORK STATE MUSEUM This point, when established and finally settled, will be a very interesting as well as needful one in the history of each of the lake systems. Comparison of the abandoned deltas with the deltas forming in the present lakes . In all normally formed deltas the interaction between stream and lake tends to the production of a fan shaped outline in the deposition of the stream borne material. The delta apex is turned up stream or landward with the point of maximum convexity in its periphery practically opposite. (Figure 29) Fig. 29 Lake shoi^e. Outline of the normal delta as exemplified in the higher level deltas of the Finger lakes The opposite outline or that of a Y-shaped mass'* in delta form may result in several ways, dependent upon the direction of the dominant current. In this type the apex is pointed lakeward with pne side toward the land. All gradations in modified forms maybe obtained between these two extremes, dependent upon the variation in the forces concerned. (Figure 30) a Gilbert, G. K., The topographic features of lake-shores. Fifth ann'l report, U. S. G. S., 1SS3-84, p. 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; University of the State of New York. Board of Regents. Albany : J. B. Lyon, State Printer
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Keywords: ., bookauthorne, bookcentury1800, bookdecade1880, booksubjectscience
