Forest physiography; physiography of the United States and principles of soils in relation to forestry . LOWLAND OF CENTRAL NEW YORK 715 northward on the theory of a receding barrier, though not as controlledby a steady continuous single recession of the ice front but by anoscillation of the ice front and a certain amount of seesawing betweenBatavia and Syracuse.^ Typical features of the channel series may be seen at Spread Rockand Jamesville and on the meridians of Mumford and Rush, etc. Theywere carved directly in front of the ice, and in such a position that the. Fig. 290. —Gulf channel, lo
Forest physiography; physiography of the United States and principles of soils in relation to forestry . LOWLAND OF CENTRAL NEW YORK 715 northward on the theory of a receding barrier, though not as controlledby a steady continuous single recession of the ice front but by anoscillation of the ice front and a certain amount of seesawing betweenBatavia and Syracuse.^ Typical features of the channel series may be seen at Spread Rockand Jamesville and on the meridians of Mumford and Rush, etc. Theywere carved directly in front of the ice, and in such a position that the. Fig. 290. —Gulf channel, looking southeast (downstream) near mouth of channel. Four miles north ofSkaneateles, New York. The depth of the gorge is 100 to 150 feet, the width from an eighth to aquarter of a mile. The walls are of shale. The gorge ends in a huge fan delta. (Gilbert.) streams that occupied them must in many cases have laved the icefront, in which case only the southern banks are now in existence, sincethe northern banks were formed by the glacier ice. In some instances,as in the case of the Fairport-Lyons channel, the channel that was ini-tiated on the ice front remained effective long after the ice had retreatedfrom the region. The most compact and remarkable set of cross-ridge channels is northof the parallel of Jamesville; the lowest is the finest glacial lake outlet » H. L. Fairchild, Glacial Waters in Central New York, Bull. New York State Mus. No. 127,pp. 7-10. 7l6 FOREST PHYSIOGRAPHY channel in the state. It is 2 J miles long, 800 to 1000 feet wide at thebottom
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectforestsandforestry
