The physical geography of New York state . or the plateau and itssteep north-facing escarpment. At the base of the Lake Erie escarpment, on the north-ern border of the plateau just described, there is another 1 T:irr, Bull. 109, Cornell Univ. Agri. Experiment Station, 189G, 92. 2 Hall, Geol. of New York, 4th , ls»:t. Jsl-is:,; Carll, Second Geol. Survey,Pennsylvania, Report III, 1880, 57-79; Same, Report IIII, 1883, 195-208. G 98 The Physical Geography of New York State plain (p. 9), of which the bottom of Lake Erie forms a New York a narrow portion of this plain occupies thearea


The physical geography of New York state . or the plateau and itssteep north-facing escarpment. At the base of the Lake Erie escarpment, on the north-ern border of the plateau just described, there is another 1 T:irr, Bull. 109, Cornell Univ. Agri. Experiment Station, 189G, 92. 2 Hall, Geol. of New York, 4th , ls»:t. Jsl-is:,; Carll, Second Geol. Survey,Pennsylvania, Report III, 1880, 57-79; Same, Report IIII, 1883, 195-208. G 98 The Physical Geography of New York State plain (p. 9), of which the bottom of Lake Erie forms a New York a narrow portion of this plain occupies thearea between the escarpment and the shores of Lake Erie;and upon it the City of Buffalo is situated. In this regionthe plain is broad and fairly level, disappearing graduallyunder the lake toward the west, and losing its charactertoward the south as it ascends to merge into the highplateau of southwestern New York. As it extends east-ward it gradually loses its typical character as a plain,and toward the north ends abruptly in the escarpment. FIG. 4i. Conglomerate boulder—a part of one of the rock cities. (Fig. 45) at Lewiston, Lockport, etc. This escarpment isdetermined by the presence of the hard Niagara limestone,which is also the cause for the Falls; and the plain itself,in its most typical portion, owes its levelness to the pre-sence of this and other hard layers of nearly horizontalrocks. Below the plain just mentioned, at the base of thenorth-facing Niagara escarpment, is another plain (Fig. 45)which itself is terminated by a north-facing bluff underthe waters of Lake Ontario, the position of this beingdetermined by the presence of the horizontal beds of thevery durable Medina sandstone. This is one of the largestand most perfect plains in the State. From Lewiston to DeKlru<1ton<tl Plains 99 Irondequoit Bay, and from the lake shore to the Niagaraescarpment, which loses prominence toward the east, thereis a wonderfully level plain crossed by the Rome, Water-town and


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Keywords: ., bookcentury1900, bookdecade1900, bookpublisherlondo, bookyear1902