Vol. 62.] LOWER CARBONIFEROUS AT CANNOCK CHASE. 



525 



sunk to a depth of 249 yards, the remainder being bored : a descrip- 

 tive section of the strata passed through is appended below. Before 

 the undertaking was abandoned, an exploration-head was driven in 

 the dark shales at the bottom of the shaft to the full dip of the 

 measures — 30° or 1 in 1*75 — for 44 yards, and from it heads were 

 driven at right angles for 150 yards on the strike. 



Account of Strata sunk and bored through at No. 1 Pit, 

 Fair-Oak Colliery. Completed October 25th, 1875. 



Description of Strata. 



Gravel and sand 



Bunter sandstones and conglomerates, containing 



copper-pyrites and galena in places 



\ Eed marls, with large ironstone-nodules, and 



light-grey sandstones 



i Smutty coal 



Red marl 



Eed and white sandstones and shales 



Purple marl 



: Red shale 



Black shale, with numerous fossil shells 



Carbonaceous shale and smut 



Grey clay 



Dark shales, with ironstone-bands and nodules . 



Coal 



Hard coarse sandstones ..' 



Shales, with ironstone-balls 



Fireclay 



Hard grit 



Dark tough clay , 



Shales and ironstone 



Peldon [a very hard, flinty stone] 



Carbonaceous shale and clay 



Strong fi reclay 



Blue shale 



Dark shale (exploring heads are in this) 



Hard grit (bottom of shaft) 



Dark shale (bore-hole commences) . . , 



Hard grey jointy grit 



Shales and ironstone 



Dark peldon , 



Shales and ironstone-bands 



Red sandstone 



Dark shales 



Red and variegated sandstones and shales .... 



Hard brown sandstone, with salt water 



Hard red sandstone 



Red sandstone, with marl-partings and water. 



Thickness. 



yds. ft. in. 



4 1 11 



90 2 8 



45 1 2 



3 



2 3 



12 1 7 



6 



4 2 6 



1 9 

 9 



6 6 



15 6 



9 2 



18 1 



i 



3 

 2 



11 



1 4 



9 



2 1 



1 

 2 

 2 



1 

 1 

 2 



1 



23 2 5 



1 6 



9 2 



19 7 



10 



2 2 7 

 2 2 



Total 

 thickness. 



yds. ft, in. 

 4 1 11 



95 1 7 



140 2 



141 

 143 

 155 1 

 161 1 



166 1 



167 2 

 167 2 

 174 

 189 

 189 

 199 



217 2 



218 1 



221 1 



222 



233 



234 

 234 1 



236 2 



237 2 

 247 1 

 249 

 252 1 



254 



255 2 



256 1 

 280 

 280 2 

 290 1 

 309 1 

 319 1 

 322 1 

 325 



11* 

 5£ 



"i 



5.4 



10J 



44 



m 

 n| 



6* 



6* 



9 







3 

 10 

 10 



4 



1 

 10 



4 

 10 I 



m : 



2£ 



4* 

 41 

 7* ! 



7i 



iii 



8* 

 »i l 



°2 I 



The waste-heaps had remained undisturbed since 1875, until 

 three or four years ago, when Mr. George Wetherall of Eugeley, 

 Q. J. G. S. No. 247. 2 n 



