196 
LOWER OOLITIC ROCKS OF ENGLAND: 
FlG. 54. 
Stone-pit near Uppingham, on the road to tftockerston, 
Rutlandshire (Prof. J. W. Judd). 
Clay. 
Fine white sand 
(with thin bands of clay) 
'"-'. (Tiv^^^f.'. . l \ . . r^T^T gradually passing into 
brown sand, 
sand rock, 
cellular ironstone, 
and finally into 
^TZI^-i^ J'^r i f~*~~- , 1,111, 
f^jj ~J V- )> hard, ferruginous rock. 
Upper Lias Clay. 
A section east of Thornhaugh, showed sands and calcareous 
sandstones on the horizon of the Colly weston Slate: it was as 
follows : 
FT. IN. 
Lincolnshire \R ub bly and fissile oolite - - 3 
Limestone. J 
("Sands and irregular beds of calcareous 
rnllT,wP9toTi ' sandstone, more or less concre- 
Slate \ tionaiy, with pot-lid structure: a 
I thick bed (18 in.) occurs near the 
(_ base - - about 10 
The concretionary beds much resemble those in the Collyweston 
slate-quarries. 
The lithological characters of the beds at Collyweslon are ex- 
ceedingly variable, but the following section affords a good notion 
of the general sequence : 
