196 PHYSIOGKAPHY AND GEOLOGY OF THE COASTAL PLAIN PROVINCE. 



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

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

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

 New Jersey, is wanting. 



"The Eancocas and Manasquan formations (glauconitic and calcareous 

 beds) of the northern part of the Coastal plain are chiefly found in N'ew 

 Jersey and Delaware, and contain a younger fauna. Such late Cretaceous 

 strata are not known elsewhere along the Atlantic border." 



The Virginia deposits belong to the Magothy-Matawan-Monmouth 

 series of formations but the exact position of the beds cannot be satisfactorily 

 determined although they probably belong to the lower rather than to the 

 upper portion of this series, the character of the materials suggesting the 

 Matawan formation. More paleontological evidence is required to finally 

 determine this point. 



The senior author of this report in discussing the correlation of the 

 deposits with those of the Gulf and other areas says :"^ 



"Eeference has already been made to the fact that the Magothy-Mata- 

 wan-Monmouth formations of the northern part of the Coastal Plain are to 

 be correlated with the Black Creek-Peedee formations of ISTorth Carolina. 

 It seems equally certain that these find their counterpart in the Tuscaloosa- 

 Eutaw- Eipley of the eastern Gulf, with the exception of such portion hither- 

 to referred to the Tuscaloosa as is known to be of Lower Cretaceous age. 



"Very little is known of the fauna of the earliest marine sediments com- 

 monly referred to the Eutaw, although the few fossils found come from 

 apparently interstratified marine beds not unlike those in the Black Creek 

 and the Magothy. It is also apparent that the fauna of certain strata of the 

 lower portions of what has been regarded as Ripley, on the Chattahoochie 

 River, represents the Black Creek and the Magothy-Matawan, but whether 

 these beds should be considered Ripley or as representing part of an 

 earlier horizon, and thus included in the Eutaw, can only be determined by 

 further investigations. 



"It is largely a question, in any event, as to whether the term Ripley or 

 Ripleyan shall be used in a broad way to include the beds containing both 

 the lower arid upper faunas, in which case even the Eutaw would have to 

 be regarded as Lower Ripley, or whether two formations are to be recognized 

 to be called Ripley and something else, either Eutaw or Tombigbee, as certain 

 stratigraphic and paleontologic facts suggest. Continuous sedimentation, 

 with gradual change in the character of the materials until tlie l)eds became 



«0p. cit. pp. 652-G54. 



