The physical geography of New York state . FIG. 142. Geological map ofvicinity of Niagara ( afterGilbert). > ^m • : • _ . • / y _ - • • • / x /• r i • • T l i , • s ; MM — •*• 9^k s 5! > • ••^^^ Vf% \v y I ^, L^ . ?£-£-. ~J- W- /. FIG. 1C!. M:q> t1 Niagara l-;ilN .-nd vicinity. (269) 270 The Physical Geography of New York State seven miles, the river occupies a deep channel cut throughthe Niagara limestone into the underlying shale, limestoneand sandstone beds, to the depth of 200 or 300 feet, andwith a width commonly between 200 and 300 yar
The physical geography of New York state . FIG. 142. Geological map ofvicinity of Niagara ( afterGilbert). > ^m • : • _ . • / y _ - • • • / x /• r i • • T l i , • s ; MM — •*• 9^k s 5! > • ••^^^ Vf% \v y I ^, L^ . ?£-£-. ~J- W- /. FIG. 1C!. M:q> t1 Niagara l-;ilN .-nd vicinity. (269) 270 The Physical Geography of New York State seven miles, the river occupies a deep channel cut throughthe Niagara limestone into the underlying shale, limestoneand sandstone beds, to the depth of 200 or 300 feet, andwith a width commonly between 200 and 300 its distance, excepting in one place, the gorgewalls are capped by the massive Niagara limestone, whilebeneath this are beds of shale with one or two strata ofharder rock. Near the base of the cliff is a talus (, 159 and 160) in which numerous large boulders of theNiagara limestone form a prominent part, having fallenthere from the cap rock of the gorge From theFalls nearly down to the railway bridges, the gorge isbroad and the water fairly quiet, excepting near the Falls,where the river swirls around under the disturbance ofthe tremendous vertical descent at the cataract. In thisstretch of quiet water the soundings reveal a depth in oneplace
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Keywords: ., bookcentury1900, bookdecade1900, bookpublisherlondo, bookyear1902
