BINGHAMTON WELL AND SECTION. 93 



section from the Hamilton stage up into the Upper Catskill has been 

 well described by Professor H. S. Williams* 



The Binghamton well was drilled during the fall of 1887 and the winter 

 of 1888 by Mr G. M. Kepler, superintendent of the East Pennsylvania 

 Oil and Gas company, to whom the writer is indebted for a series of 

 specimens illustrating its geologic section, as well as to the driller. Mr C. 

 W. Henderson, for valuable information in reference to this well. 



SECTION OF WELL AT BINGHAMTON, NEW YORK. 



Approximate altitude, OJfi feet. 



Depth. Thickness.^ Kind of rock. Formation. 



Feet. Feet. 



5d 100 Bluish gray argillaceous shale Chemung and Portage.; 



150 100 < Srayer and more arenaceous 



250 100 Bluish argillaceous shale " 



35 



it >< 



50 200 Bluish finely arenaceous shale 



550 150 < rrayish and blue arenaceous and argilla- 

 ceous shales 



700 50 Grayish finely arenaceous chips, with 



fragments of f< >ssils and calcite crystals . " 



750 50 i trayish arenaceous shale " " 



800 50 Arenaceous and somewhat calcareous; 

 some of the chips have a brownish-red 

 tint 



*Proc. Am. Assoc. Adv. Sci., vol. xxxiv, 1886, Chart of "Meridional Sections of the Upper De- 

 vonian Deposits of New York, Pennsylvania and Ohio,' : section no. ix. 



fFrom this well samples of the drillings were saved from each additional fifty feet of depth ; 

 consequently it does not follow that each lithologic zone has the exact thickness assigned to it in 

 this column. 



Jin this well-record it is impossible to draw a dividing line between the Chemung and Portage 

 stages; therefore the rocks composing them are classed together under the heading of Chemung 

 and Portage. The Portage stage might be divided into Upper Portage, Oneonta sandstone and 

 Lower Portage. The above division of the Portage would agree in a general way with that of Dr 

 H. S. Williams as shown on section ix (Chenango) of Ids " Meridional sections of the Upper Devon- 

 ian of New York, Pennsylvania and Ohio" (Proe. Am. Assoc Adv. Sci , vol xxxiv). In discussing 

 the " classification of the geologic deposits " the Professor wrote : " The Catskill deposits [Oneonta 

 sandstone] of Chenango and Otsego counties are intrinsically not distinguishable from the upper 

 stage of the Catskill, but appear at a lower position stratigraphieally in the interval occupied by 

 the ' Ithaca group ' of the Cayuga section and by the middle part of the Portage group of the 

 G e „esee section" (ibid., p. 234). Also, "the interval occupied in the Genesee section by the typical 

 Portage fauna is . . . in the Chenango and Unadilla section . . . filled by a preliminary: 

 stage of the Catskill [Oneonta sandstone]" (ibid , p. 233). 



Professor Hall in 1885 said : -The Oneonta sandstone in Otsego and Chenango counties is suc- 

 ceeded directly by strata bearing fossils of Chemung age," arid his correlation of the Upper De- 

 vonian was as follow s : 



■■ Catskill group. 



Chemung group. 



^ _x„ ( Portage croup. 



Oneonta i Hamilton (upper). 



Hamilton group " 

 (Geol. Surv. N. Y., Palaeontology, vol. v, pt. i, Lamellibranchiata, ii, p. 518). 



