SUCCESSIVE DEPOSITS IN THE APPALACHIAN REGION 427 



evitable conclusion that the Oswego sandstone of New York represents 

 the higher beds of the Bald Eagle deposit. The lineal distance between 

 the two regions is not over 160 miles, which is not excessive for such 

 deposits. 



Going northeastward into Canada, we find that (Logan, page 198) in 

 the Montmorency region east of the city of Quebec the post-Trenton 

 shales are 1,114 feet thick in a measured section on the River Saint Anne, 

 and may reach a total of 2,300 feet. Only the lower 318 feet of these 

 strata are referred to the Utica. They are conformable with the Trenton 

 limestone, the upper beds of which show intercalated shales of the Utica 

 type and grade upward into the Utica shales. Lingula ? and Diplo- 

 graptus pristis are the only fossils recorded from these shales. The shales 

 also grade upward into sandstones and arenaceous shales with Plectam- 

 bonites sericeus and DalmaneUa testudinaria, with a total thickness of 

 719 feet. These beds contain occasional black bands, but for the most 

 part are grayish or greenish arenaceous shales, with occasional conglom- 

 erate beds. They apparently represent Lorraine, to which horizon they 

 were referred by Logan. 



The uppermost division is again a black shale, containing Climaco- 

 graptus bicornis and Dicranograptus ramosus as well as Triarthrus becl-\. 

 If there is here no repetition by faulting and if the identifications are 

 correct, we have a remarkable recurrence of the Utica fauna, with the 

 recurrence of the Utica type of shale above beds of Lorraine age. 



These higher black shales of the Quebec region may even represent the 

 Richmond horizon. Near the Little Rivier du Chene, on the south side 

 of the Saint Lawrence, the beds contain Plectambonites sericeus, Rafines- 

 quina alternata, and DalmaneUa testudinaria, and are succeeded by red 

 shales, "which appear to overlie them conformably" and probably repre- 

 sent the Queenston horizon. In the vicinity of Saint Gregoire, Quebec, 

 the upper beds contain Stenopora fibrosa, Plectambonites sericeus. 

 Rafinesquina alternata, DalmaneUa testudinaria^ Hebertella occidentalis, 

 Catazyga headi, Rhynchotrema capax, Pterinea demi&sa, Orthoceras 

 crebiseptum, and Asaphus platycephalus. If these identifications are 

 correct, the fauna would appear to be of Richmond age. The beds are 

 succeeded by red shales, presumably of Queenston age. Northeastward 

 in the Anticosti region no such red sediments terminated the Ordovicic 

 series, but normal marine conditions continued into the Siluric. 



Comparing the Lorraine-Oswego beds of the third and fourth New 

 York districts with the Upper Martinsburg of southern Pennsylvania, it 

 appears that the latter, representing Eden (Frankfort) and Maysville 



