Brown — Silurian Limestone of Milesburg Gap. 85 



sylvania. He includes in this No. VI, both the Scalent 

 (cement) beds and the Pre-meridian of Kogers as is clearly 

 indicated on his cross section, although he does not definitely 

 make that statement. He apparently failed to find the anti- 

 cline and syncline in these beds described by Rogers, for in 

 mapping the limestone, No. VI, he makes it one continuous 

 band with a slight bend in the outcrop south of Milesburg 

 (fig. 2). He makes these further observations :* 



Fig. 2. 



SB 1Z7 ,V\ 



Fig. 2. Geological map of the Milesburg region copied from d'Invilliers 

 report on the Geology of Centre County. II, Lower Silurian (Ordovician 

 Limestones ; III, Hudson River and Utica slates ; IVa, Oneida sandstone ; 

 IVb, Medina Red sandstone ; IVc, Medina White sandstone ; V. Clinton Red 

 shale ; VI, Lower Helderberg limestone ; VII, Oriskany sandstone ; VIII, 

 Marcellus, Hamilton, Genesee, Portage, Chemung ; IX, Red Catskill. 



" Bald Eagle mountain west of Milesburg shows quite a decided 

 terrace about half way up its north Hank. It must be made by 

 the limestone of VI as the Clinton No. V rides high up the 

 mountain, even forming its crest for a short distance west of 

 Spring creek. In the gap the dip of the measures varies from 

 50°-80° to the northwest, and averages about 70°." 



He gives the following description of the outcrop which 

 Rogers made the eastern limb of his syncline \\ 



♦Second Geol. Sur. Pa., Report of Progress, vol. T4, p. 281. 

 flbid., p. 281. 



