CKETACEOUS SERIES IN LINCOLNSHIRE AND TOEKSHIRE. 335 



ing section is seen in the side of a prominent knoll, covered by a 

 clump of trees : — 



ft. in. 



Soil 8 



Inoceramtis-hed / I^o"gh gritty, greyish-white chalk, 

 inoceramusma. | weathering into uneven lumps . . 3 6 

 5j r ■, f Yellowish -red, very hard chalk, 



feponge-Dert. | with smooth, clean fracture 1 



Hunstanton ( Eed chalk, smooth at top, nodular 



Limestone. \ below, the base hidden by talus . 4 



From its appearance, I think the Eed Chalk is not 5 feet thick. 

 It is full of quartz- and other mineral-grains, and at the lowest 

 point I could reach it was mottled by inclusions of a brownish 

 material. Debris of Hed Chalk is scattered abundantly around, 

 especially near two springs and along the banks of the streamlets 

 to which they give rise. 



In Painsthorpe Dale, east of Kirby Underdale, there is a bed of 

 dark brown ferruginous grit, about 12 feet thick, generally con- 

 sidered to be of Neocomian age, lying beneath the Eed Chalk, but 

 beyond the relations of these two beds nothing can be made out 

 satisfactorily. 



Along the Wolds by Uncleby Dale, by Hanging Grimston, to 

 Greet's Hill, just above Acklam, the continuation of the Eed Chalk 

 is marked by fragments strewed over the surface of cultivated land, 

 or by small outcrops in the hillside. 



At the last-mentioned place, Prof. J. P. Blake * gives the following 

 section as occurring in a small quarry which is now tilled up and 

 the land cultivated, though fragments of the Eed Chalk and an 

 uneven surface still mark the spot. 

 Section at Greet's Hill quarry : — 



ft. 



G-rey spongy chalk without flints 16 



Red rubbly chalk containing masses of dark 

 brown Oolitic ironstone imbedded in it — 



B. minimus 2-3 



Dark, hard Kimmeridge ? clay. 



The next section is the most important one north of the railway- 

 cutting at South Cave ; it is, so far as I know, the only other inland 

 one in which the whole of the Eed Chalk with any considerable 

 amount of the overlying "\Ytiite Chalk can be seen at a glance along 

 the western escarpment. It derives additional importance from the 

 fact that it happens to be at the most westerly point of the Yorkshire 

 Chalk ; almost immediately north of it commences that alteration 

 in the direction of the outcrop, which finally changes from a 

 northerly to an easterly direction. 



The exposure occurs in a mass of chalk which has slipped down 

 from its original position, and now lies along the brow of the Wold. 

 It is within the recollection of a farmer, now occupying adjacent 



* Prof. J. F. Blake, " On the Chalk of Yorkshire," Proc. Geol. Assoc. 

 vol. V. p. 247. 



Q. J. G. S. ^o. 175. 2 A 



