Section through cone "A" 



A 



Morainic blocks of qranite 



andquartz-porptnry.in -, ..^^J"'^^^ Boutder with large 



part encrusted ivtih 

 serpuls 



siliceous sponge attached 



Ancient ^ 



upttirusti?) 



Cracked bulqe in sea ice about I foot high, 

 possibly due to settlement of sea ice on to 

 a concealed boulder. 



sea 



Section across cone of ancient glacier ice.coated 

 by marine sediments, in turn covered by large angular 

 blocks of morainic quartz-porphyry and granite. 



zo Feet 



Sea ice , 



7K 



Sea ice 



rTTFTyrr 



90 Feet. 



Sear the foot of Backstairs Passage to S E of M^ Larsen. 



' B'enlarged. 



Block ofqranite with large 

 compound siliceous sponge 

 attached to it about 2 feet long 

 by I n Hfide 



Fig. 62 



