36 



THE OLIGOCENE BEDS 



2. LIMESTONE AND MEULIERES OF BRIE. 



This bed is also known as ^^ travertin vioyen." It is well 

 developed in the country whence it derives its name, and also 

 round Paris ; it is composed of compact or cavernous siliceous 

 limestone {meu/ieres), in irregular beds, alternating with marls. 



Fig. 12. — Sectio7i of the Quarry of Vintuc {near J^]trec/iy). 



3 d 



OQ I 





ft. in. 



ifl Reddish Oligocene sand with silice- 

 ous pebbles . . . -99 



,' Reddish Oligocene sand (?'« situ') 

 ^ ) irregularly resting on ihe beds 



( below . . . . .30 



8 Sand}' marl falun, 3'ellowish, with 



Ampullma crassatina . . .50 



7 Marls with Ostrea cyathula and red 

 molasse ..... 



r Sandy, friable, shell}' molasse, hard 

 g I bands in places, with white, fine 

 I quartzose sand near base — Ostrea 

 \ cyathula, Meretrix incrassata 

 /White clays with violet veins and a 

 I -[ band of compact siliceous lime- 



V stone at the base 



4 White marls 



rWhite marls with fragments of sili- 

 -[ ceous limestone, and hard beds of 

 V latter at the base with Limncea . 



7 3 



3 J/^m//«;vj' forming two irregular beds 3 3 



Wliite marls (?) 



Dip slightly W. 



