OE THE UPPER CRETACEOUS IX WEST STJEFOLTC AXD XOREOLE!. 571 



Lower Chalk of North-west Norfolk is here exposed, and, like all 

 the lower divisions of the Upper Cretaceous Series, it has thinned 

 out, in a most remarkable manner, from about 150-160 feet at 

 Cambridge to less than 60 feet at this point. 



In the coombe a little to the north-east of the farm at Barret Ring- 

 stead there is a good exposure of the Alelbourn Rock. It presents 

 the same massive appearance as at Heacham. The section is :■ — 



feet. 



Soil and hard rubbly broken chalk 6 



Hard, rough, creamy- white chalk 3 



Melbourn f Verv hard, rough, yellowish, nodular rock in two massive 



Rock. \ beds , 7 



p f Thin-bedded chalk, dull white in colour, weathering into 



Chalk 1 ^ n P^ a ty P^ eces 12 



[ More thickly bedded grey chalk 4 



It onlv remains to note that 9 or 10 feet of Grey Chalk are 

 shown above the Totternhoe Stone in the Hunstanton- cliff section 

 (see p. 562). 



§ 2. Paleontology. 



Table I. — Fossils of the Gault. 



The following is a tabulated list of the fossils we have collected 

 from the Gault of West Norfolk, the last column showing how many 

 of them have also been found in the Red Rock of Hunstanton : — 



S3 

 O 



O 



Grimston 

 Brook. 



d . 



o ^ 



15 ° 



£ O 



EE 



S3 T$ 

 i-H " 







* 



















•5S- 







* 







-* 







9 









































# 





Pentacrinus Fittoni, Aast 



Terebratula biplicata, Sby. (var. Du 



templeana) 



Kingena lima, Defr 



Ostrea yesicularis, Lam 



curvirostris, Nilss 



sp. (or Exogyra) 



Flicatula pectinoides, Sby 



Inoceramus sulcatus, Park 



concentricus, Park 



(var.) 



Crippsii ?, Mailt 



Nucula pectinata, Sby 



Aporrhais, sp 



Ammonites interruptus, Brug 



lautus, Sby 



rostratus, Sby 



varicosus ?, Mich 



Nautilus, "sp 



Belemnites minimus, List 



attenuatus 



Fish-tooth 



ft 



