1877.] 



433 



[Carll. 



me to make this report and place in your liands, to use as you may deem 

 best, all of the facts and figures thus far collected. 



No part of the result has been made public, exc^^pt a small sketch fur- 

 nished to Dr. J. S. Newberry of the Ohio State Geological Survey. 



All of which is respectfully submitted. 



E. S. Nettleton, C. E. 



Since my connection with the Second Geological Survey of Pennsylvania 

 I have found these papers of great service, and been obliged to refer to 

 them often for facts which could not now be otherwise obtained, but I 

 did not feel at liberty to use the materials in any public way without Mr. 

 Nettk'ton's consent and the acquiescence of the State Geologist. These 

 restrictions are now removed by Mr. Nettleton's permission to publish 

 whatever may be of general interest. 



The well records are many of them imperfect, none of them indeed are 

 just what the geologist requires, for they give no indication of the char- 

 acter of the strata between the Sandstones. The blanks were not prepared 

 with a view of studying the lithology further than it was involved in an 

 examination of the oil rocks. But they accomplished the purpose intended 

 and brought out the facts required to demonstrate that there are diflerent 

 beds of sandstone lying at different horizons and all dipping with con- 

 siderable uniformity to the southwest. 



This may be shown in a general way by taking a few wells at random 

 along the line surveyed from Pleasantville to Oil City — thus : (refer to the 

 records) 



(1) Ennis Well, Pleasantville, top of oil sand above ocean 807 feet. 



(127) Fink, No. 12, Shamburg 



(231) Porter, Foster Farm, Oil Creek 



(213) G. K. Anderson, No 134, Pet Centre 



(258) Lady Suffolk, Blood Farm 



(261) Well No. 23, Rynd Farm 



(268) Champion, No. 2, Rouseville 



(269) Elizabeth, Clapp Farm 



(270) Siveily & Gardner, Allegheny Run.. . 



Between the National well and Fink; No. 12, there is a drop of about 45 

 feet in the figures here given from the Black oil rock or Stray, to the Green 

 oil rock or 3d sand of Oil Creek, which accounts for what appears to be a 

 greater dip according to the distance than on other parts of the line. The 

 green oil rock is found under the Pleasantville district in its proper horizon 

 as is shown by some of the well records, but is unproductive. Between 

 the National and Shamburg both rocks yield oil in some wel's. To make 

 the whole series of ocean elevations above given uniform — that is, all refer- 

 ring to the top of the 3d Sand — the elevation at the National should be 

 about 734 feet, and at Ennis' about 762 feet. 



