222 THE CRETACEOUS ROCKS OE BRITAIN. 
One of the pink bands (probably the lower one) has been seen in 
a pit on the road from Kirmond-le-Mire to Tealby, and again on 
the ridge to the south-east of Binbrook, but north of these places 
the colouring disappears. The extent of ground in a north-west 
and south-east direction, over which these coloured bands occur, 
is about 18 miles. 
The equivalent of the Totternlioe Stone, with some thickness of 
the overlying chalk, is visible in a quarry at G-rassby, a village 
about 3 miles north-west of Caistor. The dip is eastward, and the 
beds are broken by two faults, but the following succession can be 
measured : — 
ft 
Greyish-white marly chalk, with buff-coloured marly bands 12 
Hard rough nodular chalk ----- l 
Grey shale and loose chalk - - |- 
Hard grey gritty stone, with large Ammonites and other 
fossils, and having a line of decomposed pyrite nodules at 
the base (Totternhoe Stone) - - - - - - - 31- 
Hard greyish-white chalk in beds about a foot thick, with 
shaly partings - ------ 8 
25 
The higher beds of the Lower Chalk are exposed in the large 
quarry at South Terri by, whence many thousand tons of chalk 
have been removed. This quarry is about 75 feet deep, and the 
section, as seen by Mr. W. Hill in 1887, is as follows : — 
ft. 
Middle Chalk (for details, see p. 484.) - - - - - 45 
Thin greenish-grey marly veins, enclosing whiter marly 
Belem- chalk --------- J 
nite Smooth grey laminated marly chalk 2 
Marls. Dark bluish-grey laminated marly chalk, variegated 
with lighter grey (Act. plenus) - - - - 1 
7 , f . Very rough nodular chalk, passing down into less 
Off aster rou gh whitish chalk - - - - - - - 2| 
jjjas Hard whitish chalk in a massive course - - - 2l 
, ", Grevish-white chalk, weathering into thin platy pieces 
along greenish marly veins - 10 
When I visited the pit in 1883 lower beds very exposed, viz., 
ft. 
Greyish-white chalk, as above - - - - 3 
v* Hard compact whiter chalk - - - - - - 2 ] 
Grey nodular chalk, with irregular seams of shale 6 
The Belemnite Marl. 
At the southern end of the Wolds a quarry half a mile west of 
Welton shows at the top two layers of dark-grey marl, enclosing 
a course of hard whitish chalk. 
They are seen again in a large quarry at Claxby, but here con¬ 
sist of one bed of grey marl, about a foot thick, and full of yellow- 
coated nodules of hard chalk. 
