OEETACEOUS AND TERTIAEY FORMATIONS OF NEW JERSEY. XI 



termediate beds which he immediately over 

 these, and as far as seen, with the same gen- 

 eral dip, though a little smaller in amount, 

 are rich in marine fossils which are unques- 

 tionably of the Cretaceous period 



The numerous beds and strata of the 

 series all dip gently to the southeast, the 

 descent being not more than HO feet per mile; 

 while the underlying red sandstone dips 

 towards the northwest at an angle of 10° or 

 12°. 



The accompanying .sec/io??, Fig. 1 , across 

 the Cretaceous and Eocene strata in Middle- 

 sex and Monmouth Counties, in which part 

 of the State the}^ are best exposed, will suffi- 

 ciently illustrate their mode of occurrence. 



The columnar section^ Fig. 2, will further 

 show the thickness of the Cretaceous, and 

 Eocene strata^ as far as present demonstra- 

 tions extend; and the map of the part of Xew 

 Jersey in which these strata are found will 

 make plain the numerous references to local- 

 ities, which are given in the descriptions of 

 species. In addition to the outcrop as given 

 on the map, and the dip as shown in the 

 section, the correctness of the columnar 

 section has been proved by the borings in 

 several artesian wells in which the successive 

 strata of greensand, clay, etc., have been met 

 in the order here laid down. The Miocene 

 is found, with its characteristic fossils, in 

 several isolated localities in the counties of 

 Cumberland and Salem, but no structural 

 or other well-marked geological peculiarities 

 of these beds have yet been developed. 



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