Foliation
Groups of closely spaced, often discontinuous, layers of coarse bubbly, coarse clear and fine-grained ice, formed as a result of shear or of compression at depth within a glacier. The two dominant types are longitudinal and arcuate.
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Longitudinal foliation in the glacier Comfortlessbreen, NW Spitsbergen, Svalbard. Photo M. J. Hambrey, 1978. |