DRIFT: 



(1) (V.B.) — Wind driven snow. 



(2) (V.C.) — Snow lodged in the lee of surface irregularities. 



(3) (V.A.) — The motion of sea ice or vessels resulting from current. 



(4) (V.C.) — Any rock material, such as boulders, till, gravel, sand, or 

 clay, transported by a glacier and deposited by or from the ice or 

 by or in water derived from melting of the ice. 



DRIFT ICE: 



(1) (I.A.) — Floating ice. 



(2) (V.C.) — Any ice that has drifted from its place of origin. 

 DRIFT ICE FOOT: (I.B.l.a.)— Ramp. 



DRYDOCK ICEBERG: ( II. A.5.a.)— Valley iceberg. 



END MORAINE: (II.B.)— Terminal moraine. 



EROSION: (V.B.) — The destruction of ice by weathering, solution, cor- 

 rasion, transportation, and ablation. Cf . weathered. 



ERRATIC: (V.C.) — A stone foreign to the local bedrock. The transport- 

 ing agent may be glacier ice. 



EXPANDED FOOT ICE: (II.A.3.a.)— The lobe or fan of ice formed 

 bevond the mouth of a valley glacier from which the ice discharges into 

 a broad valley or upon a plain. Other terms for the same feature are 

 bulb glacier or piedmont bulb. Expanded foot ice occurs typically 

 in Alaska. It is uncommon in the antarctic. See glacier, also land ice. 

 (Fig. 75.) 



FALSE ICE FOOT: (I.B.l.a.)— Ice formed along a beach terrace and 

 attached thereto just above the high water mark. It is derived from water 

 originating from melting snow above the beach terrace. This formation 

 is termed a false ice foot because, unlike a true ice foot, it has its base 

 above the low water mark. A false ice foot may be added to by accre- 

 tions of sea ice resulting from waves, spray, and spring tides. Cf. 

 ice foot. 



FAST ICE: (I.B.) — All types of ice, either broken or unbroken, attached 

 to the shore, beached, stranded in shoal water, or attached to the bottom 

 of shoal areas. Fast ice may be classified as: (1) Ice foot, (2) shore 

 ice, (3) stamuhka, or (4) bottom ice. (Fig. 61.) 



FAST ICE BELT: (I.B.l.a.)— Ice foot. 



FIELD: (I.A.2.f.)— Ice field. 



FIORD, also FJORD: (II.B.)— A narrow, deep, steep-walled inlet of 

 the sea formed by a glacier. (Frontispiece.) 



FIORD ICE: ( I. A3. d.)— Winter ice formed in a fiord. 

 FIRN: (II.B.)— Neve. 



FIRNIFICATION: (II.B.)— The process of conversion of snow into 

 glacier ice. 



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