ICE SHEETS AND GLACIERS 



his conclusions largely on the character of the confluent 

 ice just north of the Drygalski Tongue (see L, Fig- 

 ure 19). 



Here the Larsen, Reeves, Priestley, and Campbell 

 glaciers all send down ice which unites to form a 

 more or less uniform sheet with the northern edge of 

 the Drygalski Tongue. Strains have produced vertical 



S.E. 



Con t/uc^i/' 

 fee. 





• .•.-■.:.-.>10J?fllft(&.-. :'; - ^ ^2it . ,. .. M . ,,.i ij 

 7/777P7777777777777Jm^7/r77777^^77777^ 



^-7 -m/fc,^ 



Ro 



"^^^^ y "Tidt CracIC 



%s^-/—- ... Maximum Levtt « 



^--^''''''^^^ M l m iljinimi niJUlllllMi m i m iill 



>»«52 



,r« 



B 



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Vf/ l.f)NO 



Fig. 21. — A Vertical section through "confluent 

 ice" and Drygalski Tongue (see Fig. 19 at L). B. 

 Vertical section along front face of Ross Ice Shelf, 



LOOKING north. 

 (Both after David.) 



cracks in this sheet, and in places it seems to be com- 

 posed only of thin sea-ice, for David found salt water 

 at the base of certain curious gullies or dongas in 

 the ice surface. In the confluent ice, the thicker por- 

 tions correspond to where the ice streams enter from 

 the glaciers behind the sheet (see A, Figure 21). 

 David considers that the Ross Ice Shelf is merely 



He shows a cross 



155 



confluent ice on a grander scale 



