MAIN MORAINIC SYSTEM IN THE GRAND RIVER LOBE. 455 



Analyses of clay f rot n wells at Lottsville and TitusoiUe. 



Silica 



Alumina 



Protoxide of iron 



Lime 



Magnesia 



Alkalies 



Titanic acid 



Carbonic acid and water 



Total 



Carll reports^ drift at Spring Creek station, on Big Brokenstraw Creek, 

 137 feet thick, and near that station drift 200 feet. The structure is not 

 made known. 



A well at Major Mills's, 3 miles southeast of Spartansburg, was reported 

 by J. Smith, of Union City, to have penetrated 214 feet of drift. Though 

 in a valley the altitude is probably 1,600 feet. The drift consists of gravel 

 and cobble in the upper 100 feet and of alternations of till, gravel, and 

 sand in the remainder of the well section. 



A well near the railway summit between Cony and Spartansburg is 

 reported by White" to have penetrated 150 feet of drift. The well mouth 

 is 1,575 feet above tide, or about 200 feet below the bordering uplands. 



In Corry two wells at the Downer oil works, near the Erie station and 

 at about the same level (1,431 feet above tide), are reported by T. A. Allen 

 to have each penetrated about 175 feet of drift, the greater part of wliich 

 is sand and gravel. Carll reports a welP at the Downer oil works which 

 penetrates only 48 feet of drift; his authority is also T. A. Allen. There 

 is possibly an error recorded .in the j^resent report, since Mr. Allen gave the 

 thickness of drift from memory after a lapse of about twelve years. 



In the east part of Corry a well was recently put down by Thomas 

 Pine which penetrated 201 feet of drift and of wliich a careful record was 

 kept. It passed through 16 feet of till and gravel at the top, below which 



' Second Geol. Survey Pennsylvania, Kept. I^, p. 29. 

 2 Ibid. , Kept. Q^ pp. .36, 227. 

 'Ibid., Kept. I*, p. 228. 



