AKT. 14 MICHIGAN TRAVERSE GROUP — POHL 15 



Having thus established an unbroken succession through some 200 

 feet of beds, any portion of which is easily distinguished from an- 

 other through all exposed sections in Charlevoix and Emmet 

 Counties, it becomes necessary to find a place for a faunally, litho- 

 logically, and geographically isolated 16-foot outcrop near East 

 Bay View. This exposure in a small, abandoned quarry is, so far 

 as known, the easternmost surface indication of Traverse rocks in 

 Emmet County. Much of the contained fauna bears a superficial 

 resemblance to species restricted to portions of the Gravel Point 

 stage ; but when compared a wide difference both between species and 

 association becomes quickly apparent. The singular absence of the 

 highly characteristic and ever-present Gravel Point Prismatophyl- 

 Ivrni anna (Whiteaves) argues strongly against a correlation with any 

 portion of these beds. The presence, however, of the coral GyliTidro- 

 phylluvi fanicwm (Winchell), whose only other known occurrence 

 is high in the Petoskey formation, in these beds, indicates a close re- 

 lationship to the Petoskey formation. From both stratigraphic and 

 faunal standpoints, the section following must be intercalated in the 

 thus partly filled gap within the Petoskey. The Norwood, Charle- 

 voix County, section (to be described later) is the only occurrence at 

 present known where the highest beds of the Petoskey formation are 

 seen to rest in contact with the succeeding Waverlian black shale. 

 Since, then, the complete succession of Traverse beds is known, with 

 the single exception of the break within the Petoskey under discus- 

 sion, the probably correct position for this debatable outcrop is 

 within that break. The only other possible suggestion, that it is a 

 lower set of beds than is to be seen elsewhere at the surface is strongly 

 denied by the close relationship between its contained fauna and that 

 of the Petoskey formation. 



Geological section east of East Bay View {locality 21) 



Petoskey formation. 



Zones undetermined. 



Bed 10. Gray, shalelike limestone. Long, solitary corals. Thickness 

 exposed 8 inches. 



Bed 9. Fissile, black shale with minute, irregular limestone lenses and 

 fossils weatliering reddish. Fossils in shale few and crushed. 

 Fauna: Pharcops cf. rana, large Spirifer (eury tines type), mucronate 

 Spirifer, Stropheodonta erratica and demissa, Ceratopora (large 

 longitudinally striate), ramose bryozoa, Fenestella, Cyrtina (flat 

 area, curved at beak), CyUndrophyllum, Hederelloi, digitate and 

 arbusculate Favosites, and Cranaena 2 feet 4 inches. 



Bed 8. Dark gray, bituminous, comparatively heavy limestone in eight- 

 inch layers with large fucoids on fossiliferous shalelike partings. 

 Shales composed of fossil fragments, probably deposited under more 

 turbid water conditions. Fauna, especially the corals, abundant. 

 Arbusculate and digitate Favosites, mucronate Spirifer, Gypidula^, 

 Stropheodonta erratica and demissa types, numerous frondose bryo- 



