SECTIONS NEAR SARATOF, KAMISCHINE, ETC. 
275 
passed in succession through beds of whitish, bluish-gray and yellowish sands, for 
the most part incoherent, but containing concretions of silicified sandstone with 
Alcyonic bodies, and corals, &c., which are overlaid by siliceous mottled clay- 
stone of porcellaneous character, in parts including green grains, and resembling 
many varieties of the greensand series of Britain, or of the Quader Sandstein and 
Planer-kalk of the Germans, where those members of the series are not calcareous. 
The annexed woodcut and the accompanying description, will convey a general 
idea of this succession. 
41 . 
s.w. 
Upper Suburb of Sarktof. 
Volga. 
CRETACEOUS. 
JURASSIC.. 
Sands — base of Tertiary deposits. 
h. Siliceous beds. 
g. Claystone and porcellanite. 1 ... , „. , , 
f. Dull grey argillaceous marlstonc. J ( 11 m y iese ’ 0n '^ 
e . Whitish, grey, and bluish marls. 
d. White and yellow sands and sandstone, with Alcyonia and corals. 
c. Alternations of shale and sand, with Jura fossils. 
b. Ferruginous sands of great thickness. 
(_ a. Dark pyritous shale, with concretions of argillaceous limestone, Ammonites cordatus, & c. 
In the walls of the farm-houses of the German colonists at some distance to 
the south of Sarktof, we met with earthy, yellowish sandstones, having green 
grains diffused, which so completely resembled some of the secondary greensands 
of England, more particularly in containing long branching bodies like Alcyonia, 
that however indisposed to admit lithological identity and imperfect fossil proofs to 
guide us, we could not avoid believing, on the spot, that these rocks formed a part 
of the Cretaceous system. 
In pursuing our course still further to the south, we were presented with other 
evidences which at once convinced us, that although the higher plateaux might, to 
a great extent, be cretaceous, the depressions, at all events, were certainly occu- 
pied by tertiary rocks ; for to the north-west of the town of Kamischine, we found, 
in a siliceous grit, mineralogically very much resembling the Lower Quader of the 
Germans, beautifully preserved impressions of dicotyledonous leaves, which are 
unquestionably of tertiary age. Of these we shall treat in the next chapter. These 
siliceous rocks appeared to us distinctly to overlie the porcellaneous shale and green- 
sand with Alcyonise which we have been considering, as represented in this section. 
