1851.] GEINITZ ON THE QUADER FORMATION. 55 



of Berlin, who is now publishing a geological map of the above-men- 

 tioned district, lately invited me to re-examine it with him and in 

 compan}' with M. von Strombeck, of Brunswick, and some other 

 geologists. 



The Upper Quader-sandstone near Heimburg is bounded by sandy 

 Upper Quader-marl. The greensand, or green sandy marl, above and 

 below the sandstone, has similar characters and the same fossils as 

 the greensand of Aix-la-Chapelle, of the Salzberg near Quedlinburg, 

 and of Kieslingswalda in Silesia ; and as the Upper Quader-sandstone 

 itself. 



List of the Fossils. 



Callianassa antiqua, Otto. Crassatella arcacea, Rom. 



Faujasi, Otto. Venus faba, Sow. 



Serpula filiformis, Sow. Trigonia aliformis, Park. 



Belemnites quadratus, Bl. Area (Cueullaea) glabra, Sow. 



Turritella sexlineata, Rom. Peetuneulus sublsevis, Sow. 



Rostellaria papilionacea, Goldf. Cardium Ottoi (C. Ottonis), Gein. 



vespertilio, Goldf. Gervillia Solenoides, Defr. 



Cardita Goldfussi, itiw//. ( = Pholadomya Ostrea laciniata, Nilss, 

 caudata, Rom.) etc. etc. 



The grey Chalk-marl (Kreide-mergel) of the hill (Schlossberg) at 

 the village of Heimburg, comprising the Triimmer-kalk (the Con- 

 glomerate of the Sudmerberg, near Goslar), is connected with the 

 green sandy marl below it by similarity of organic remains, in the 

 same manner as the Upper Quader-sandstone is united with the Upper 

 Quader-marl in one and the same cretaceous series. This series of 

 sandstones (the Lower and Upper Quader of M. Beyrich), greensand 

 and green sandy marls *, and grey and yellow chalk-marls (Kreide- 

 mergel, and the conglomerate of the Sudmerberg with its Maestricht 

 Corals), is the equivalent of the TufF-chalk of Maestricht, and the 

 Upper Chalk with Firestone of other countries. 



I am likewise of opinion, that the Lower Quader-marl (Lower Flags 

 or Marl- and Sandstone-flags, also the Variegated Marl, and Lower 

 Greensand of Essen) is the equivalent of the Lower Quader-sandstone, 

 and not of the Upper or Chalk-flags, which are the equivalents of 

 the Lower Chalk of Kent. 



Consequently I obtain the following arrangement of the series : — 



I. Uppe. Quader {>; 1^^^:^ Sr^rl ^^PP-^l'^'''- 



II. Middle Quadermarl (Planer-kalk)= Lower Chalk. 



TTT T r\ J fl' Lower Quader-marl 1 rr -• 



in. Lower Q"ader 1 3. Lower Quader-sandstone ) =Tourtia. 

 IV. Hils-clay=Neocomian. 



Professor Beyrich has represented in his Map the Upper Quader 

 in six subdivisions. 



* Sand of Mlinchenhof and of the Salzberg near Quedlinburg, and the flags of 

 the Plattenberg near Blankenburg. 



