A model for sedimentation by tidewater glaciers.

Abstract

Sampling of sediment from the fjord floor in front of tidewater glaciers in Glacier Bay, Alaska, has provided information about processes in this restricted glaciomarine setting. Deposits are strongly controlled by: sea-water characteristics, position and sediment discharge of meltwater streams, iceberg calving, and rate of glacier-front retreat. Five distinct facies associations have been found to reflect glacier-fjord regimes. The facies associations and ice-fjord conditions responsible for them form the basis of constructing a preliminary model for glacimarine sedimentation by tidewater glaciers. -from Author sediment fjord Glacier Bay Alaska calving facies associations glacimarine sedimentation