Vol. 6S.'] PALEONTOLOGY OF THE WARWICKSHIRE COALFIELD. 597 



Section op the Thick Coal-Seam,i Newdigate Colliery. 

 Description of Strata. Thickness of Strata^ 



Eoof. Shalybind. ^^- «^^«- ^^- ^'^^^^ 



/Coal, tops 1 3 



Two- Yard J Coal, hards 10 



Seam. | Coal, brights 2 3 



i Coal, slocters 18 6 0' 



Dirt-parting 6 



Bare Seam. Coal 2 2 0^ 



Stone 1 



EyderSeamj^°^;'™^^"g^ ? f 



[ Coal, spires 1 1 



Stone 4 



Coal, spires 2 



Coal, bottoms 2 5 9 



{ 



Dirt 4 



t:i,, c< r Coal, black 2 5 



iLil oeam i r^ -i • n m o q 



I Coal, spu-es 10 3 3 



Dirt 2 



Slate Seam. Coal, three-quarter 1 6 



Batt 1 



r Coal, bright 2 3 



t Coal, bottoms 2 7 6 4 



Floor. Clunch 



Total 24 10 23 4 coal. 



Above the Thick Coal there are about 300 feet of strata which, 

 on palseobotanical evidence, must be placed in the Middle Coal 

 Measures. These rocks, which include the Forty-Eeet Sandstone 

 (see vertical section, PL LXI), consist of extremely variable beds of 

 strongly current-bedded sandstones and shales, with one or two 

 thin coals, some fireclays, and certain peculiar breccias. Good 

 exposures can be seen at Messrs. Stanley's J^o. 4 clay-pit at 

 Stockingford ; at Griff Clay-pit, Heath End, Chilvers Coton ; and 

 also in a clay-pit near Poles worth. Each of these clay-pits ba& 

 yielded fossil plants — -those from the first locality being partly 

 petrified ; while those from the second are impressions preserved 

 in nodules of clay-ironstone. 



Arrangement. — The accompanying map (PL LXI) shows that 

 the outcrop of this subdivision consists of two narrow arms of 

 unequal length, which meet in the northern portion of the coal- 

 field. Erom the identity of the seams which form this double 

 outcrop, it is evident that the Coal Measures lie in a broad shallow 



1 J. T. Browne (08) p. 503. 



