Dr. FiTTON on the Strata below the Chalk. 



315 



contains very hard masses distributed through softer matter, and is stated by Mr. Woodward, 

 to include a mixture of the fossils of the Upper green-sand with those of the chalk marl. 3. A 

 bed of hard chalk, composed entirely of a ramose zoophyte; — (No. 4. of Mr. Murchison's Section 

 and part of 4. of Mr. Muggridge's mentioned below). 



The beds between the white chalk and the Lower green-sand here, differ much from those of 

 the southern counties. The Upper green-sand, if it be present at all, is very indistinct : the 

 green particles which, in other places, abound in this part of the series, are wanting; and the 

 thickness, which in the Isle of Wight is 60 or 70 feet, is here reduced to 2 feet. The Gault 

 has but a doubtful representative ; and instead of resembling the blue clay of the South, appears 

 under the form oi reddish marl, not more than 4 feet thick*. 



Mr. Woodward gives a list of 16 species of shells, from this red matter at Hunstanton; of 

 which number only five occur in the Gault of the southern counties : seven are found in the 

 Chalk ; four in the Upper green-sand, at some other places ; three in the Lower green-sand ; and 

 the five following occur only in the red chalk, — Ammonites alternatus, Spatangus planus, Spongia 

 jjaradoxa, Terebratula pentangulata, T. triplicata. — Geology of Norfolk, p. 54. 



Kimmeridge clay. — This stratum, in West Norfolk, succeeds immediately to the Lower green- 

 sand, all along the line of escarpment. It can be seen in several detached points, between 

 Southrey, about the tenth mile on the road from Ely to Lynn, and the shore beneath Hunstanton 



very nearly, with those of Mr. Murchison and myself, though their divisions of the strata are not 

 quite the same. 



Taijlor, 1823. 



1. Soil and diluvium ... 6 in. to 



2. Chalk, with few or- 



ganic remains 



3. Very hard ... 3 



Ft. In. 

 4 



or- "I 



36 



4. White, with a ramified \ 



zoophyte, like roots of trees J 



5. Deep red matter ; 1 in. to 



6. Red chalk 2 



7. Red chalk; darker"] 



and more compact I 2 

 than 6 J 



39 

 1 6 

 6 



4 



8. Sand,lightbrown ferruginous, "] 



containing titaniferous iron I- 10 

 ore J 



9. Puddingstone and sandy 1 4A r, 



breccia, verj' dark brown... J 



10. Very dark puddingstone, in 1 



some places almost black : I ^^^ f> 

 discernible only at low ( 

 water visible about J 



Muggridge, 1835. 



1. Soil and diluvium 



2. Lowest chalk 28 



3. Chalk marl. 



2 6 to 3 



Ft. In. 



31 



4. White zoophy tic bed... 1 4 to 16 



Seam of red ar- " 



gillaceous matter 

 2 to. 



5. Red zoophy tic lime- - 



stone, (represent- 

 ing the gault,) in 

 two beds 



6. Lower green-sand . 



7. Carstone 



3 



3 10 



Sandy breccia 14 



Murchison, 1831 







Fitton, 1827. 





Ft. 



In. 



No. 3 20 







No. 4. 1 6 to 2 







No. 5. 



4 



No. 6. 



a. 10 ft. to 12 



b 14 



* Similar beds of Red marl occur in the corresponding place beneath the chalk-wolds of Lin- 

 colnshire, (see a paper by Mr. Bogg, Geol. Trans. 1st Series, vol. iii. p. 392, &c.) ; and appear 

 again at Speeton, near Flamborough Head, on the Yorkshire coast ; — where, however, they are 

 distinctly superior to the blue gault, and are regarded by Mr. Phillips, as forming part of the 

 chalk. — Geology of Yorkshire, (Isted.) p. 75 ; and Section No. 3. 



