492 ANNALS NEW YORK ACADEMY OF SCIENCES 



America have been more or less generally, though by no means invariably, 

 accepted in this country as representative of continental sedimentation, an 

 interpretation more recently extended to some of the western representatives 

 of these formations, and while in recent years the Tertiary formations of the 

 interior have slowly come to be regarded as river and eolian rather than lake 

 deposits, the Paleozoic sediments of North America are still referred to as 

 of marine or estuarine origin by most American geologists. A noteworthy 

 exception to this widespread adherence to inherited ideas is shown in the 

 recent studies of Barrell and others, in which the continental origin of certain 

 American Paleozoic strata was clearly demonstrated. 



The following table gives those formations which in part or in whole 

 show evidence of continental (chiefly fluvial and eolian) rather than a 

 marine origin. In a few cases, as in the Oriskany, a continental (eolian) 

 formation has been remarked by the transgressing sea, so as to secondarily 

 have a marine character impressed upon it. 



Permic. 

 Donkard formation. Cimmaron and other 



Red beds in part. 



Carbonic. 

 Monongahela Weber and 



Connamaugh Bingham quartzytes, etc. 



Alleghany generally with a number 



Kanawha of marine inter- 



Pottsville calations. 



Mississippic. 

 Mauch Chunk 

 Pocono Waverly in part. 



Devonic. 

 Catskill 

 Oneonta 



Sherburne (typical) 

 Oriskany — Esopus (in part). 



Siluric. 

 Sylvania sandstone. 



Saline formations including Longwood shale series and Shawangunk con- 

 glomerate. 

 Tuscarora, — Clinch — upper Medina (in part). 



Ordovicic. 

 Juniata — Bays — Queenston. 

 Tyrone ("Oneida" in part of Pennsylvania geologists) 



