36 



NEW YORK STATE MUSEUM 



locality, so far as has been determined, where a thick bed diminishes 

 in such short distance to a thin seam. 



South Granby, Oswego co. The site of this drill hole is on 

 the farm of Alonzo Lutentelly, i mile southwest of South Granby, 

 and 1 3^ miles north of Little Utica, on the west side of the high- 

 way leading north from the latter j)lace where it is crossed by a 

 small stream. 



SECTION AT SOUTH GRANBY 



Strata 



Sand and gravel 

 Shale 



Limestone 



Shale 



Shale 



From 

 Feet Inches 



Shale 



Limestone 



Shale ■ 



Ore 



Shale 



Limestone 



Limestone 



Limestone 



Limestone and 

 shale 



Shale 



Ore 



Shale 2 



o 



22 



39 

 40 



89 



102 



135 



136 

 138 



139 



140 

 140 



145 

 145 



154 



223 



!23 



To 

 Feet Inches 



22 

 39 



40 



89 



102 



135 

 136 



138 



139 



140 



140 



145 

 145 

 .154 



223 



223 

 228 



Character 



Dark shale, full of fossils — 

 Rochester horizon. 



Impure limestone with fossils. 



Shale with a little limestone. 

 At 76 feet is a I inch band show- 

 ing dark pebbles with pyrite. 



Shale quite free from limestone 

 bands. At 10 1 feet there is a thin 

 seam of ore and the shale con- 

 tains for 4 inches numerous crys- 

 tals of pyrite. At 102 feet there 

 are 4 inches of limestone with large 

 braxhiopods. 



Shale with some very dark 

 bands towards the base. 



Light colored limestone with 

 fossils. Near the middle the fos- 

 sils are replaced by iron ore. 



Calcareous shale. 



This band of ore is richest be- 

 low, grading into a highly colored 

 shale above with thin seams of 

 ore. 



Shale with band of limestone 

 at the middle. 



Coarse, light colored limestone. 



Coarse, fossil limestone with 

 some shale. 



Lean fossil ore. 



Gray compact limestone and 

 alternations of lighter colored 

 limestone and shale. 



Gray shale with bands of lime- 

 stone. The limestone bands in- 

 clude a number of the pearly 

 layers; also some fine compact 

 bands. None of the bands of 

 limestone are over 6 inches thick. 



Oolitic ore with some fossils at 

 base. 



Mottled shale with bands of 

 limestone. Oneinchof shale with 

 peV:)bles found 2 feet below the 

 ore. Mottled appearance of shale 

 due to organic remains. 



