GEOLOGY OF PART OF SOUTH DURHAM. 



155 



Feet. 



27. — Ironstone 



28.— Mild blue shale 2 



29.— Mild coal shale 



Ft. In. \ 



Cannel 7 



Coal 4 6 



Band OJ 



ICoal 1 %\j 



30.— BROCKWELL COAL... 



6 5 



149 



At the place where this bore was made the strata dip about 

 one in three to the north, hence their actual thickness will not 

 be quite so great as is represented in the above section. 



No. 2.— TABLE OF STRATA PASSED THROUGH IN SINKING THE 

 No. 2 ENGINE PIT, LANDS COLLIERY, NEAR COCKFIELD. 



Feet. In. 



Gravel 3 



Strong clay, with gravel and large stones 12 



Blue shale. 1 6 



Ft. In. 



("Coal 4 4 " 



FIVE QUARTER COAL JBand 6 - 6 6 



ICoal 1 8 . 



Grey shale - t .... 3 6 



White sandstone, mixed with brown " whin " 3 6 



Grey arenaceous shale 1 



White „ „ 2 



Grey „ „ 1 6 



Soft brown sandstone 1 6 



Grey arenaceous shale 1 



White sandstone, with brown " whin " 2 



Blue arenaceous shale 12 



Black shale 1 



COAL 2 



"Whin" 1 



Blackshale 1 6 



COAL 9 



Grey shale 3 4 



Blue shale 9 6 



Brown "whin" 10 



