210 



Report of the State Geologist. 



XXII //-. On the road along, the western side of the brook, 210 feet 

 above H 1 , are thin, unfossiliferous sandstones and arenaceous shales resembling 

 the Sherburne formation in lithologic characters and probably belonging 

 to it. A little higher, a concretionary stratum crosses the road; while at 582 

 feet above the creek level, or 157 feet higher than the low est exposures of H 8 , 

 sandstones similar to those of the Sherburne are exposed on the road. 



XXII H 3 . On the road almost at the summit of the divide, two miles 

 north of Chaseville and twenty-three miles northwest of Schenevus, are argil- 

 laceous shales and shaly sandstones at an elevation of over 850 feet above 

 Schenevus creek. Spvrifer mesastrialis, Hall, occurs abundantly in certain 

 layers of these shales, and they are unhesitatingly referred to the Ithaca for- 

 mation. The outcrop is a small one, but afforded the following species: 



1. Spirifer mesastrialis, Hall. (a) 



2. Itli ynclioiiella c.rimia, Hall. (c) 



3. Goniophora, sp. (rr) 



4. Plmi/rotoma/ria cf. rotalia, Hall. (c) 



XXII 7/ 4 . On the hillside north of the road and fifty feet higher than 

 H 3 , are plenty of arenaceous shales and thin sandstones containing an abun- 

 dance of the species w hich occur in the Ithaca formation of Otsego county. 

 The rocks closely resemble those that are found on the hill west of Oneonta 

 above the White quarry, and contain a similar fauna. The species are: 



1. Spirifer mucroiiatus (Con.), Hill. (a) 



2. Spirifer mesasti'ialis, Hall. (c) 

 .■'). Tropiloleptiis rarinatus (Con. ), Hall. (rr) 



4. CJtonetes setigera, Hall. (rr) 



5. Tthynclioiiella (■rim id. Hall, or R. Stev&nsi, Hall. (c) 



6. Nueula corbuliformis, Hall. (a) 



7. Pa/racyclas lirata (Con.), Hall. (rr) 



8. PalcBoneilo maxima (Con.), Hall. (rr) 



9. Xiievlites cuneiform is, Con. ' (rr) 

 lo. Tentojculites cf. attenuatus, Hall. (r) 



XX J I 11'. On the top of this high hill, some 930 feet above the level 

 of Schenevus creek at Chaseville, and scarcely twenty-five feet above H 4 , is a 

 ledge of irregularly bedded, coarse-grained, greenish-grey sandstones resem- 

 bling in all respects the greenish-grey sandstones of the Oneonta formation in 

 the vicinity of Oneonta, and this stratum is regarded as forming the base of 

 that formation, and has been so indicated on the accompanying geologic map. 



