242 GEOLOGY OP ILLINOIS. 



Shaft of H. L. Marsh, Fairbury, on south-west qr. sec. 4, T. 26, R. 6 E. : 



Section. 



Ft, In. Ft. In. 



1. Blacksoil 2 3 



2. Yellowclay :..... 11 16 



~ (Blueclav 8? e, R 



•>' \ Soft blue clay 4 5 -° 



4. Quicksand 5 33 



5. Limestone.. 3 G 36 6 



fi ( Blue clay' 5 10 * ]0 ,„ .„ 4 



"• \ Eed and brown clay 5 5 . 



- (Limestone 10 2 57 6 



'\ Limestone, shale and clay .*7 7 64 6 



8 C Bine clay 5 5 ? 10 u 75 5 



) Bed clay o 6) 



9. Limestone 4 75 9 



10. Coal, 3 ; slate, 3 ft 2 3 73 



(Bluectay 5 1 83 1 



11. < Red clay 5 88 1 



(Bed clay, very dark 7 3 95 4 



12. Blue limestoDe, very hard 1 3 96 C 



13. Bed clay 8 10 105 4 



... C Sandstone, fine and light-colored at top, coarser descending '. 70 175 4 



t Sandstone, in thin bands, interstratified with thin bands of clay 9 184 4 



15. Soapstone 31 8 216 



16. Coal 4 10 220 10 



17. Fire-clay 26 8 217 6 



13. Limestone, hard 1 2 243 8 



/Slate, dark 2 



(slate, light 15 6 



JSlate, dark 10 



9 " \S 



) 



31 8 2S0 4 



jSlate, black 1 



/Slate, band of nodules ■ 2 j 



\ Slate, black, with some coal 1 11 ) 



30. Clay, light-colored, soft 1 11 332 3 



21. Limestone 6 333 3 



22. Soapstone, light, sandy 3 2 291 5 



23. Slate, dark, soft 7 292 



oi < Sandy shale : 1 5 29:1. 5 



< Sandy shale, changing to clay shale at bottom 33 7 3:J2 



25 Sandstone, micaceous and shaly at top, harder at bottom 40 7 372 7 



26. Shale soft at top and hard at bottom -. 8 11 331 6 



27. Coal 2 5 383 11 



33. Fire-clay 20 6 404 5 



29. Sandstone, sandy shales, with thin clay bands, to 571 



From the coal No. 27 the section was ascertained by boring in bottom 



of shaft. Water was noticed at 427"feet. The upper sixteen feet of 

 No. 25, reported to contain calamites and large wood-like fossils, body 

 being of sandstone, probably Sigillaria incrusted with coal. Limestone 

 No. 5 of the section outcrops near town. 



The shaft and boring of Amsbury & Jones, on south-west qr. of sec. 

 2, at Fairbury, exhibits the following section, as reported by them : 



Section. 



Ft. In. Ft. In. 



1. Soil 2 6 



2. Yellow clay 8 8 11 2 



3. Blue clay and mixed with sand 9 7 20 9 



4. Gravel, with little water '. 1 1 21 10 



5. Hard-pan, sand and gravel, with little clay, ceme-ted and very hard 39 2 61 



