supraglacial flow till
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flow till — A till that may be either subglacial or supraglacial in origin. Flow till displays secondary transport, sorting, and/or fabric modification by plastic mass flow. Flow till exhibits weak stratification and sorting and may contain distorted… … Glossary of landform and geologic terms
supraglacial till — Till deposited on top of or within the upper part of a glacier or ice sheet. Melting of glacial ice deposits supraglacial till atop subjacent material, which forms topographic highs on a resultant landscape. Supraglacial till types include… … Glossary of landform and geologic terms
till — [ glacial ] Dominantly unsorted and unstratified drift, generally unconsolidated and deposited directly by a glacier without subsequent reworking by meltwater, and consisting of a heterogeneous mixture of clay, silt, sand, gravel, stones,… … Glossary of landform and geologic terms
Supraglacial lake — A supraglacial lake is any pond of liquid water on the top of a glacier. Although these pools are wict|ephemeral, they may reach kilometers in diameter and be several meters deep. They may last for months or even decades at a time, but can empty… … Wikipedia
subglacial till — Till deposited beneath, in, or by the bottom part of a glacier or ice sheet; subglacial till types include lodgment till, subglacial flow till, and subglacial melt out till. Compare: till and supraglacial till. SW & GM … Glossary of landform and geologic terms
supraglacial debris-flow sediment — (not preferred) refer to till … Glossary of landform and geologic terms
melt-out till — A till that may be either subglacial or supraglacial in origin. Melt out till forms by slow melting of debris rich stagnant ice, but without secondary flow processes. The fabric and clast orientations, imparted by ice processes, remain mostly… … Glossary of landform and geologic terms
lodgment till — A subglacial till deposited by an active glacier (flowing ice) commonly characterized by dense, fissile (“platy”) structure and containing rock fragments with their long axes oriented generally parallel to the direction of ice flow. Local… … Glossary of landform and geologic terms
Glacier — This article is about the geological formation. For other uses, see Glacier (disambiguation). The Baltoro Glacier in the Karakoram, Kashmir, Northern Pakistan. At 62 kilometres (39 mi) in length, it is one of the longest alpine glaciers on… … Wikipedia
Moraine — This article is about geological phenomena. For other uses, see Moraine (disambiguation). A moraine is any glacially formed accumulation of unconsolidated glacial debris (soil and rock) which can occur in currently glaciated and formerly… … Wikipedia
