648 



PROCEEDINGS OF THE BALTIMORE MEETING 



The Raritan formation (clays, sands, gravels) of the northern part of the 

 Coastal plain evidently represents the earliest phase of Upper Cretaceous depo- 

 sition, these beds overlying the Lower Cretaceous strata, where exposed, with a 

 marked unconformity. Beds of similar age do not occur in North Carolina. 



The overlying Magothy-Matawan formations (sands, clays, lignitic and glau- 

 conitic beds), which outcrop throughout the area from the Potomac basin 

 northward to the islands off the New England coast, are represented in North 

 Carolina by the Black Creek formation (sands, clays, lignitic and glauconitic 

 beds), the same fauna and flora characterizing the deposits in both areas. The 

 minor subdivisions established in New Jersey, where these formations are best 

 developed, can not be recognized elsewhere, and the changes in physical condi- 

 tions bringing about the differentiation of faunules there described were evi- 

 dently only local. 



The Monmouth formation (glauconitic beds, sands, clays) characterized by 

 the introduction of BeJemnitella americana and other forms can be traced 

 through New Jersey. Delaware, and Maryland, and again reappears in North 

 Carolina, the deposits here and in South Carolina having been named the 

 Peedee formation (glauconitic beds, sands, clays). The reappearance of one of 

 the earlier faunules toward the close of the Monmouth, as observed in New 

 Jersey, is wanting. 



The Rancocas and Manasquan formations (glauconitic and calcareous beds) 

 of the northern part of the Coastal plain are chiefly found in New Jersey and 

 Delaware, and contain a younger fauna. Such late Cretaceous strata are not 

 known elsewhere along the Atlantic border. 



TABLE OF CRETACEOUS FORMATIONS 







Long Island 

 and southern 

 New England 



New Jersey 



D M^ a i r Q e ^ nd Virginia North Carolina Alabama 

 Maryland ° 





- 





Manasquan 







1 



en 





Rancocas 



Rancocas 



o 

 o 





Monmouth 



Monmouth Peedee 



Ripley 





Matawan 



Matawan 



Matawan 





® 



Black Creek 



Eutaw • 



- 



Magothy 



Magothy 



Magothy 





Tuscaloosa 

 (West Ala.) 





Raritan 



Raritan 



Raritan 









o 







Patapsco 



Patapsco 













Arundel 







1 







Patuxent Patuxent 



Cane Fear Tuscaloosa 

 Lapefear (East Ala.) 



