32 



GEOLOGICAL MEMOIRS. 



and Tapes gregaria, Partsch, a characteristic form of the Cerithian 

 series. The stratum with Tapes gregaria (about 18 feet beneath 

 the surface) is undulated, and crops out at a distance of 480 to 600 

 feet westward. From this place the section increases in depth, and 

 the following strata are observed to come successively to day in a 

 distance of 1920 feet : — 



feet. in. 



Sands 1 



Gravel of Vienna Sandstone . . 



Cerithian sandstone 



Gravel of Vienna Sandstone .. . 



Cerithian sands 



Sandy clay 



Cerithian sandstone 



Cerithian calcareous marl ... 1 

 Calcareous clay, with white 



calcareous stripes 



Yellow sands with Cerithian 



patches 1 



Gravel of Vienna Sandstone .. . 

 Solid "tegel," with calcareous 



nodules 1 



Cerithian calcareous marl 



Rolled pebbles of Vienna 



Sandstone 



Sandy clay with isolated pebbles 3 

 Pebbles of Vienna Sandstone, 

 considerably rolled, with 

 irregularly interspersed con- 

 cretions of Cerithian sand- 

 stone 2 



Loose Cerithian sands 1 



Minute gravel of Vienna Sand- 

 stone 



Grey sands 





 



10 

 G 



feet, in- 



4 



3 



Coarse pebbles 



Cerithian sands 1 



Greenish "tegel," with cal- 

 careous concretions 3 O 



Marly calcareous layers 2 



Bust-coloured sands 2 



Conglomerates of pebbles of 



Vienna Sandstone 3 



[Here the strata crop out at 

 higher angles.] 



Grey sands 5 



Sandy clay, with rolled pebbles 8 



Grey sands 2 



Coarse gravel of Vienna Sand- 

 stone 1 6 



Tough yellowish -brown clay... 2 

 Sands with gravel, passing- 

 down wards into sandstone 2 6 

 Tough calcareous clay, with 



isolated calcareous stripes... 4 

 Conglomerates, with large 

 rolled fragments, some of 



several cwts 6 



Green argillaceous sands, with 



isolated patches of gravel... 1 8 

 Tough yellow clay 2 6 



55 



A bluish argillaceous sand terminates the section. About 240 

 feet from it, a well has been sunk through the " tegel " to a depth of 

 18 feet, and about 12 feet beneath the yellow clay, concluding the 

 above-mentioned section. The " tegel " is interrupted by a single 

 narrow seam of sand, permeable to water. Operculina complanata, 

 some Bivalves (including a Modiola), and Turritella bicarinata have 

 occurred in this " tegel," which is analogous, as it seems, to that of 

 Poetzleinsdorf, 1ST.W. of Vienna. Wherever this " tegel " has been 

 sunk through to the depth of 30 to 42 feet, powerful springs of water, 

 issuing from the Cerithian sands immediately beneath it, have been 

 obtained. The altitudes above the level of the Adriatic are : — 



Congerian " tegel " at the end of the junction -rail- feet. 



road near Hetzendorf . 666 



f at the Gloriette of Schonbrunn 759 

 Cerithian sandstone < lower limit, at the railroad- 



Y section 703 



Poetzleinsdorf sands near Speising 678 



[Couwt M.] 



