till
Sign in to saveAlso known as glacial till
thumb|right|Closeup of glacial till. Note that the larger grains (pebbles and gravel) in the till are completely surrounded by the matrix of finer material (silt and sand), and this characteristic, known as matrix support, is diagnostic of till. thumb|right|Glacial till with tufts of grass thumb|Till after avalanche, Norway Till, or glacial till, is unsorted glacial sediment.
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Encyclopedic overview
16 sectionsContents
- Description
- Processes
- Erosional
- Depositional
- Types of till
- Subglacial till
- Lodgement till
- Meltout till
- Deformation till
- Supraglacial till
- Meltout till
- Flow till
- Tillite
- Economic resources
- See also
- References
thumb|right|Closeup of glacial till. Note that the larger grains (pebbles and gravel) in the till are completely surrounded by the matrix of finer material (silt and sand), and this characteristic, known as matrix support, is diagnostic of till. thumb|right|Glacial till with tufts of grass thumb|Till after avalanche, Norway Till, or glacial till, is unsorted glacial sediment.
Till is derived from the erosion and entrainment of material by the moving ice of a glacier. It is deposited some distance down-ice to form terminal, lateral, medial and ground moraines.
Excerpted from Wikipedia’s “till” article, available under the CC BY-SA 4.0 licence.