426 P. REPORT OF PROGRESS. E. W. OLATPOLB. 



Page. 



Formation No, !'/. Lower Helderberg. 



18 thick in section : characteristic fossils, 60 



" faulted against VIII c; throw, 2300', 85 



" much contorted at quarry in Buffalo t., 149 



41 not extensively exposed in Buffalo t., 149 



" top of formation grows sandy upwards into VII, 149 



" I irought up against VIII c 3 by the Perry Co. fault, in Carroll t., . 159 



'• quarried largely at J. Bear's, Carroll t, 160 



'• disappears eastward at Sterrett's gap, Carroll t., 160 



♦■ makes a ridge from Sterrett's gap westward, 160 



11 at Smith's quarry, Carroll t., 161 



" VI a -f b, 300' to 400' in Centre t., 180 



" folded so closely and so often as to make a wide belt, 186 



" 600' in Greenwood t., not easily differentiated, 218 



11 heavy solid bituminous limestone mass, 218 



" two synclinal troughs cross Jackson t., 233 



" 60' exposed at Hall's quarries in Jackson t., 233 



" two outcrops cross Liverpool t.; well exposed along both lines ; many 



quarries ; much lime made at head of Pfoutz's valley, . . 242 



,l upper rubbly beds, under fossiliferous beds and over solid beds in the 



Liverpool t. quarries, ........ 242 



11 upper rubbly beds yield few fossils, except the ubiquitous Leperditia 



alia, . . . 242 



M undulates broadly through northern-central part of Madison t., . . . 259 

 " wanting (as well as VII and VI [T a b) in Rye t., . . 304 



" thins from Oak Grove furnace eastward to 0' before reaching Sterrett's 



gap in Rye t., . .309 



•• lower beds thin out first; higher beds persist further eastward; proof 



of nonconformity, 309 



" outcrop in Saville t., straight past Ickesburg, and then zigzagged, . . 325 



" broken and crushed, although nearly horizontal, 325 



" caverns, large, with stalactites, Ac, <fcc, 325 



" outcrop zigzags through Spring t., 333 



" limestone land in Spring t. abundant, 333 



" forms high bold ridges, often capped with VII, 333 



" spreads widely at BUiotsburg, 337 



» makes Bell's hill, . 337 



•• Beotion at Garner's quarry, Spring t., 337 



•• makes low ridge through Raoooon V., Tuscarora t., 363 



synclinal points in Tyrone t., 374 



•• small show in Watts t., 378 



much disturbed and no fossils, Watts t., 378 



Via, Lewistovm limestone. 



•• Boasardville limestone of Report G- 6 , 58 



" 100 massive, quarried, general section 60 



" has a few fbf 61 



•• yields all the lime made in Center t 179 



I to 70' thick, near N. Bloomneld, Ac, 17!) 



•• its fragmentsj beveled slabs, resonant, cover the plowed fields 



without Impeding agriculture, 180 



" h;is a t< u fossils in Center t« 180 



