1 88 Dr. FiTTON on the Strata below the Chalk. 



Paces occupied 



by each division. 



783 — 900. Upper Green-sand 117 



[The rise of this stratum is here very distinct in the section on the shore ; and its course ' 

 inland is marked in the original Ordnance Map (scale, 6 inches to a foot,) by a distinct 

 ridge parallel to that of the chalk, passing from the shore close to the little village of 

 Yaverland, on the north.] _ 



783. Here the green-sand crops out, in a bed 20 feet thick, of very dark grey, sandy, cal-~| 

 careous layers, with concretions of harsh lime-stone 20 feet. J 



787. Fine specimens of coral 



800. A thick bed of green-sand, with Siphonice. In 3 feet the fossils change, the corals 

 disappear, and the ^ilj^owi^ come in. In this bed is a layer, 1 foot thick, of very black chert. 



850. A darker set of layers, 1 foot, rises among the green-sand beds J 



900 — 1020. Gault. — A blue-grey marly mass, almost like the lowest beds of the chalk, 1 , ^ 



but more mud, or silt-like. Harsh to the touch J 



[I could obtain no specimens of the fossils, which were few and broken. The slope 

 above this stratum is covered with grass. — F.] 



1020 — 1767. Lower Green-sand 747 



1020. Reddish brown sand rises ; small rolled gravel, and quartzy pebbles. Trend of the 1 

 shore, 16° 30' south of west. Dip, 70° north. Strike, 74° west. Thickness, 30 or 40 feet. J 



1061. Yellowish grey mud; outcrop (presumed) concealed by rubbish ; over blue mud, \ 

 passing into grey, and much mixed , j 



1100. Vivid yellow sand, 6 feet. Light grey mud, 8 feet. Blue mud, 15 feet 29 



1140. A great bed of dull brown sand. 1st subdivision, = 15 feet. 2nd, = 20 — 25 feet, -i 

 3rd, := 30 feet ; brown and green-sand, and quartz pebbles, and bits of iron-stone. > 65 

 The lowest 3 feet very green-sand J 



1200. Deep brown sand, full of bits of oxide of iron, of a strong resinous lustre and high t 

 polish. The upper 3 feet rather less brown. [Like that which abounds in the Lower > 58 

 green-sand of Western Sussex and Surrey ; {59.y] J 



1250. The cliff becomes mural. 



1258. Presumed outcrop of pale yellow sand. Mere sand ; no cohesion : has a few broken "1 

 shells Thickness, 40 feet, j 



1323. Red sand, but not so dark as at 1200. A vivid stripe of orange and yellow. 1 



Thickness, 20 feet. 



1341. A continuation of the last, separated by a rather honeycombed line. Apparent 

 dip = 23° Thickness, 50 feet. [ 100 



1406. A mere continuation of the last, separated by a dotted line, but same material. 

 [The sand-rock hereabouts is divided, by fissures, into masses approaching to rhomboids.] 



Thickness, 30 feet. . 



1470. Outcrop of a very thick bed of dark grey mud or silt, contrasting strongly with the 1 

 red sand which overlies it. Apparently the equivalent of the middle, more cohesive, 

 greener, and less stony member of the Lower green-sand, like that of Folkstone 

 (24 — 28.)? The darker sand here gives a green streak, when scraped or struck with 

 the hammer.] 



1600. The cliff loses its mural character, and falls back into an amphitheatre, full of the 

 rubbish of the bed above 



1676. A very red (almost blood-red) seam, a foot thick, visible in the rubbish of the beds 

 above 



1710, &c. Wealden. 



[A fresh range of low sectional cliff commences on the beach at 1710; the amphi- 

 theatre of the higher cliff retiring far back, — perhaps from the rise of the Weald-clay ; 

 the decay of which, and its efflux in the form of mud, seems to have produced the ruin 

 and fall of the upper strata.] 



40 



