520 



[Proc. B.N.F.C, 



SECTION AT BALLYRUDDER, 

 CO. ANTRIM. 



SOOLDER CLAY, 36 fe£t. 



FIRE CLAY, t*.ft**. 



GRAVEL , 4f..t. 



flKOWNIJH SAN O, 2t'ct. 



B 



STRATI Ft CD GRAVELS ,206c*. C, 



UNDETERMINED B£D5 r f«./t w 

 e«n.ji*rirt.^ of gravel) f I2,f t it. *■"• 



KEUPER MARLS, 8/Ufc. 



The Boulder Clay is such as commonly occurs in Co. Antrim. 

 In its upper portion it contains numerous large blocks of chalk 

 and basalt, many of them much glaciated. Throughout its 

 depth a very large proportion of the pebbles are of these two 

 rocks ; a few fragments of mica schist and quartz were also 

 observed, and a number of flints derived from the Chalk. The 

 clay varies in colour, being dark red or blackish, and exhibits 

 no trace of stratification. A hundred yards southward its surface 

 rises 1 5 or 20 feet higher than at the spot where our section was 

 taken. No shells were obtained in this bed. 



The coarse clay passed downward into very fine hard red clay, 

 with fewer pebbles, some 4 feet in thickness ; this bed, however, 

 is only a local development. A few shells were found in it, the 



