THE GEOLOaY OF GIBEA.LTAE. 



527 



We have mentioned the fact that the calcareous sandstone and 

 grit at Monkey's-Cave Road contains in its upper portion fragments 

 of limestone, and that the whole deposit is overlain by a heavy mass 

 of agglomerate. An excellent section, showing this superposition, is 

 exposed at No. 4 Europa Advance Battery, where calcareous sand- 

 stone is seen dipping outwards from the cliff at an angle of 27°, with 

 thick agglomerate lying directly upon it (fig. 10). At this place the 

 sandstone did not show any included blocks of limestone. The posi- 

 tion of this agglomerate is shown in Section JSTo. VI. 



Fig. 10. — Section from near Windmill-Hill Barr \clcs to the Sea near 

 Monkey's-Cave Road. 



Monkey's-Cave 



Koad. Quarry. 



Set* 



I. Limestone. 

 p l . Platform of marine erosion, on the same level as Europa plateau, 160 



feet above the sea. 

 p 2 . Platform of marine erosion, on the level of No. 4 Europa Advance Battery, 



260 feet above tbe sea. 

 s 1 . Calcareous sandstone, horizontally bedded, marine. 



s 2 . Calcareous sandstone, dipping away from cliffs, the weathered and rear- 

 ranged upper surface of s 1 . 

 a. TJnfossiliferous limestone-agglomerate. 



Fig. 11. — Section at Prince's Lines. 



I. Limestone. s. Gravelly conglomerate. a. Limestone-agglomerate. 



At Prince's Lines another somewhat similar section is well 

 Q. J.G.S. No. 135. 2n 



