+---------------------------------------------+-- | Alluvial Deposits. | +---------------------------------------------+ | Lacustrine Formation with Buhrstones. | +---------------------------------------------+ | Fountainbleau sandstone and sand. | +---------------------------------------------+ | Gypsum with bones. Siliceous Limestone. | _Tertiary_ +---------------------------------------------+ | Coarse Limestone. |_Formations._ | (London Clay.) | +---------------------------------------------+ | Tertiary sandstone with lignites. | +---------------------------------------------+ | (Plastic clay,--Molasse,--Nagelfluhe.) | +----------+---------------------------------------------+----------+ | white. | | Chalk. tufaceous. _Ananchites._ | | chloritic. | +-----+--------------------------------------------------+----------+ |Green sand. | |Weald clay. (Secondary Sandstone with _lignites_.)| _Secondary_ |Iron Sand. | +-----+--------------------------------------------------+----------+ | _Ammonites._ Jura Limestone. Slaty beds with fishes and | | _Planulites._ crustacea. | +-----------------------------------------+Coral rag. | | Quadersandstein, or white sandstone, |Dive clay. | | sometimes above the lias. |Oolites and Caen | +-----------------------------------------+ limestone. | | Muschelkalk. |Marly or calcareous lias | | _Ammonites nodosus._ | with _Gryphæa arcuata_.| +-----------------------------------------+-------------------------+ | Marls with fibrous gypsum. Saliferous variegated sandstone. | | Arenaceous beds. | +-------------------------------------------------------------------+ | _Productus aculeatus._ | | Magnesian limestone. Zechstein. (Alpine limestone.) | | Copper slate. | +-------------+-----------------------------------------------------+ |Quartziferous| Co-ordinate formations of porphyry, | |Porphyry. | red sandstone, and coal. | _Formations._ +-------------+-----------------------------------------------------+ | _Transition Formations._ |