NOTE ON THE GEOLOGY OF SUNDAYS RIVER. 



241 



such evident traces are visible, si 



?tched away towards the feet of 

 the Winterhock and Zuur- 

 berg mountains : when the 

 Enon conglomerate was roll- 

 ing shingle on the beach, 

 when over that subsiding 

 stratum the sediment of ages 

 was forming the sandstones 

 of the Zwartkops and Sun- 

 days Rivers, under the dark 

 blue waters in which the 

 ammonites, trigoniae, pinna?, 

 and numberless other crea- 

 tures, whose remains we find, 

 lived and died. 



Portions of those sand- 

 stone strata must have in 

 their turn emerged, for a 

 time, and become dry land, 

 and their surfaces have been 

 3" covered with vegetation 

 2 whose vestiges are now 

 w shown in the fossil ferns, &c, 

 g found in the neighbourhood 

 w of the latter river : and they 

 V. were again covered by the 

 1 advancing ocean while the 

 m upper conglomerate and 

 ^ clays were accumulating, 

 with all their more recent 

 fossiliferous treasures ; and 

 for the whole of this enor- 

 mous period must those 

 rugged and weather-beaten 

 hills, from their bare ap- 

 pearance and present posi- 

 tion, have stood undaunted 

 by sunshine or wintry blast 

 as islands in the ancient 

 main, calm spectators of 

 the mighty changes that 

 took place around. Our expe- 

 dition was, however, brought 

 to a sudden conclusion ; and 

 many of our intended ob- 

 servations were obliged to 

 be left unfinished. 



VOL. IV. 



