518 STRATIGKAPHICAL GEOLOGY 



France is that of Aquitaine, and may be given as an illustration 

 of the lithological development of the Mediterranean facies. 

 According to M. Coquand and M. de Grossouvre it is as follows : 29 



s ( Limestones of Tercis, with Micraster tercensis, in two zones, separated 

 by Miliolina limestones and lacustrine deposits, the whole about 

 ^ I 600 feet thick. 



a /"Reddish -yellow limestone with Baculites anccps, Pachydiscus 



colligatus, Turrilites polyplocus, and Thecidea papillata. 

 gJ White limestone with Bryozoa and Belemnitella mucronata. 

 I White marly limestones with Actinocamax quadratus, Scaphites 

 \_ binodosus, Inoceramus latus, and Exogyroc. 



c /"Sandy limestone with Spondylus truncatus, Hippurites,a.nd\Eadiolites. 

 | J White and grey limestones with Mortoniceras texanum. 



| Hard nodular limestones with Scaphites Meslei, S. Lamberti, 

 J> \ and Micraster turonensis. 



^ (Soft limestones and marls with Sphcerulites. 



.2 Soft beds with Madiolites, llippuritcs, Sphcerulites, and Acantho- 

 \ ceras Deverioc. 



c I Nodular limestone with Prionotropis Woolgari. 

 EH \ Marls with Ostrea columba. 



o I Sands, clays, and limestones with Ostrea, Caprina, Schlcenbachia 

 o> j varians, and Tumlites costatus. 



.g J Only found on the Pyrenean side of the basin, where it is repre- 

 1 sented by black marls and limestones. 



4. Germany, Bohemia, and Silesia 



In Westphalia and Northern Germany there is an Upper 

 Cretaceous Series comparable to that of England and the north of 

 France, having Gault Clays and marls at the base, succeeded by 

 Cenomanian marls and a thick mass of chalk which includes 

 representatives of the Turonian, Senonian, and Campanian stages. 



Farther east, however, in Saxony, Bohemia, and Silesia, 

 a different facies is found, where terrigenous sandy material 

 prevails over that of organic origin, the chalky limestones of 

 Western Europe being largely replaced by sandstones which the 

 Germans call " Quaderstein," because they are much jointed, and 

 split into square blocks. The following is the general succession 

 in this area according to Schlonbach and Fritsch : 



Chlomek /"Sandstones with Placenticeras Orbignyi, Peroniceras 

 Beds ^ subtricarinatum, and P. westphalicum. 



rClays with ironstone nodules, Placenticeras Orbignyi 

 Priesen | and Scaphites Lamberti. 



Marls with Pachydiscus peramplus, Prionotropis 

 Neptuni, and Baculites bohemicus. 



) Priesen 

 Beds "1 1 



