LOWPJK GREENSAND. 37 



The occurrence of a, band of rolled pliosphatic nodules in the 

 upper part of the Ferruginous Sands has attracted the attention of 

 several observers.* The nodules seem to be on the same horizon 

 as those noted at Compton Baj', but in the " coprolite bed" 

 4 inches thick at Redcliff, are lari^er, harder, and better preserved. 

 Among the specimens Mr. Keeping identified Ammonites hiplcx. 

 Sow., A. cordatus, Sow., Pleurotomaria sp., Gardium striatidum ? 

 Lucina sp., Myacites sp., Cytherca rugosa '^ Area contracto, PhilL, 

 all being fragmentary and much rolled. There occurred also 

 quartzite and other pebbles, as large as walnuts. 



Up to the present this bed has not been discovered near Shanklin 

 or at Blackgang, nor is its horizon marked by any break in the 

 sequence of the strata. It was probably a near-shore deposit, and 

 did not extend southwards in the direction in which presumably 

 the deeper portions of the Lower Greensand sea lay. Near 

 Godalming, on the contrary, it is largely developed according to Mr. 

 Meyer, who describes it as resting o\» an apparently eroded surface 

 of the sands beneath, and as constituting a well-marked basement- 

 bed to an upper division of the Lower Greensand {op. cit, p. 10). 



PuNFiELD Cove. 



Before quitting the description of these fine cliff sections of the 

 Lower Greensand, we will briefly notice the sequence of beds in 

 Punfield Cove. Lying 20 miles west of the Isle of Wight, thi^ 

 locality gives further opportunity of observing the changes in the 

 strata which we have already seen in ju-ogress within the limits of 

 the Island. 



The section of the Lower Greensand in Punfield Cove is as 

 follows. {See also Plate III.) : — 



Ft. In. 

 Gault. 



Carstone, seen only in himps lying about ; apparently about 

 '" Yellow sand, not well seen, about - 

 Very sandy dark clay with selenite (perhaps the 

 thick clay of Blackgang) - - . - 



White sandstone with white quartz pebbles 

 Brown sandstone, and yellow sandstone with shales 

 Interlaminated sands and clays, the latter traversed 

 by numbers of small tubes filled with sand 

 (? worm-burrows) .... 



!_, ^ Ferruginous sand and hard sandstone with Leda - 

 "5b c^ I Interlaminated sands and clays with some thicker 

 u'Xi'^ I bands of yellow and white sand - - - 61 



r^ Limestone with wavy seams of lignite and many 



I fossils (the " Marine Bed " of Professor Judd), 

 [_ variable, but about - - - - 10 



c 



^ ^ Si 



3 O -tj I 



O sr a^ 



* Meyer, ()u the Lower Greensand of Godalming. {Geologist's Assoc), 1869. 

 Woods, Geol. Mag. for 1887, p. 46. 



