16 



GEOLOGY. 



deal of igneous rock (diabase), mostly in the form of intrusive sheets 

 or sills. The coal, of which there are several beds in the lower part 



Fig. 320. — Section across the Palisade Ridge and the Hudson River. /gw=Fordham 

 gneiss, Pre-Cambrian ; €Os = Stockbridge dolomite, Cambrian-Ordovician; Tn = 

 Newark; Tp= Palisade diabase (intrusive). The surface of €Os near the center 

 of the section is below sea-level (Hudson River). The cliff to the left of €Os is 

 the Palisade RidgJ. (Darton, U. S. Geol. Surv.) 



of the series, has sometimes been coked in the vicinity of the igneous 

 intrusions. 1 









Easton/ ) 



7 y/ J ,,i#iiiiiiffvoy 



; 



' J* 



i ,/ miiiHIIIIi / £P& 7 m vsm x ) r x ^ y 





rv 1 





, Pileojoic 



gc-g Lockatong 

 | [ Brunswick 



(SS Tra f 







r^^ Cretaceous 

 — fault* 

 •— Trap Dikes 



Lambertville V^c^^^^W^^^^-^^"" J 1 



!-*— OipAStrrRes 





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Scale of Miles ^^ : : - : ^N#llii^ "\ ^ 





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Fig. 321. — Map showing the surface distribution of the several subdivisions of the 

 Newark series in New Jersey. The threefold outcrop of each principal division, 

 near the Delaware River, is shown. (Kiimmel, Geol. Surv. of New Jersey.) 



In most of the area south of the New York- Virginia area, the dip of 

 the beds is to the northwest, though in one of the eastern patches it 



1 For Trias of Maryland, see Md. Geol. Surv., Vol. I. For portions of the Triassic 

 in Va. and W. Va., see Harper's Ferry (Va.-Md.) and Monterey (Va.-W. Va.) folios. 



