82 TRIASSIC SYSTEM. 



TRIASSIC OE SALIFEEOUS SYSTEM. 



English Authors. German Authors. French Authors. 



Variegated Marls . . . Keuper .. . . Mames Irisees . . 



{Wanting in England) . Muschelkalk . . Calcaire Conchylien. 



Variegated Sandstone. . Bunter Sandstein Gres Bigarre. . . 



The Muschelkalk, a shelly limestone, whicli occupies a 

 central position in this system on the continent, has not yet 

 been recognized in England, so that we have not a clear 

 line of separation between the Upper Marls and Lower 

 Sandstone of this country, although Sir E. I. Murchison 

 considers the calcareous flags of Broughton, near Shrews- 

 bury, to occupy the relative position of the Muschelkalk. 



The New Eed System consists of a series of variegated 

 red, blue, and greenish marls and laminated clays, con- 

 taining thick beds of rock salt and gypsum : below these 

 are variegated and laminated sandstones with white and 

 grey grits and conglomerates. The " Bone Bed," at first 

 formerly classed with the Lias, is considered by Sir P. 

 Egerton to belong to the Upper part of the New Eed Sand- 

 stone, this bed has been traced from Axmouth, (Devon.) 

 to Watchet, Aust Cliff, Westbury, &c., (Somerset,) and 

 also at Combe HOI and Wainlode Cliff, (Gloucestershire). 



This system is extensively developed in Gloucestershire, 

 Worcestershire, Stafford, Shropshire, and Cheshire, and is 

 the gTcat source from which the Eock Salt and Sulphate 

 of Lime are obtained, as weU as of the Brine Springs and 

 other mineral springs which arise from it, in some of these 

 counties. 



