58 Notes on the Geology of South Ferriby. 
after which the bed is named. Above this are other zones, but in 
none of the quarries is the Upper Chalk present.* 
Mr. W. Hill describes these sections in his well-known paper 
“On the Lower Beds of the Upper Cretaceous Series in Lincoln- 
shire and Yorkshire,’ and gives the following particulars of the 
section shewn “in the first of the three large quarries nearly two 
miles west of the railway station, Barton-on-Humber :— ; 
BEL, 
( ‘Hard white chalk with lines of flint in 
| tA | courses of unequal thickness, divided 
Terebvatulina 2 to massive blocks by irregular joints, 35 
ovabilte j which pass through many feet of 
| : ol material, passing down gradually but 
: decidedly into 
Hard rough yellowish white rocky 
Zone of Rhync. | chalk, weathering into thin flakes with 
cuvieri and / Wmeven nodular surfaces, divided into 
Melbourk Rack beds of uncertain thickness, by persist- 
‘|ent but thin bands of greyish marl, no 
| flints 10 
Middle Chalk. 
{Thin greenish-grey marly veins enclos- 
| ing whiter marly chalk. 
Zimenae | Smooth grey marly chalk, weathering 
Belemnitella 4 12to thin lamine. 2 
plena. Dark bluish-grey marly chalk, weather- 
ee into thin lamine, centre darkest, 
j the colour variegated with buff or 
| lighter grey. I 
£ip 
(Very rough nodular chalk graduating 
to 
| Less rough, irregularly jointed whitish 
Zone of | chalk 2 
Holastey sub- “<A remarkably massive course of 
globsus. | whitish hard chalk 2s 
Bedded whitish chalk, separating by 
weathering into thin flaky pieces along 
| green-grey marly veins 10 
From this it will be seen that Mr. Hill estimates the Middle 
chalk in this quarry at 45 feet in thickness, and the Lower Chalk 
Lower Chalk. 
—_— OO Oc OOOO Oe 
at 181 feet, or a total of 633 feet. 
“The Lincolnshire pits are evidently lower down in the chalk beds 
than in the quarry at Hessle on the opposite side of the Humber, where 
even at the bottom, almost on a level with the water of the estuary, the 
Belemnitella plena zone is not reached, that is to say the Hessle quarries 
are entirely in the Middle Chalk. fi 
+Quart. Journal, Geol. Soc. August, 1888, pp. 320-367, 
