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Differences between glacial and fluvioglacial deposits
- Size
- Glacial till deposits tend to be much coarser and larger than fluvioglacial deposits
- Due to the energy required for transport
- Due to the energy required for transport
- Glacial till deposits tend to be much coarser and larger than fluvioglacial deposits
- Shape
- Glacial till is angular
where fluvioglacial
deposits are sub-rounded
to rounded because of the
process of attrition that can
occur as material is carried
by meltwater
- Glacial till is angular
where fluvioglacial
deposits are sub-rounded
to rounded because of the
process of attrition that can
occur as material is carried
by meltwater
- Degree of sorting
- Glacial till is a random mix of different sized deposits.
- Fluvioglacial deposits are sorted, with the coarsest
deposits deposited first as loss of energy occurs
upon meltwater streams exiting snout of glacier
- Finer material can be transported further as they
required less energy and are deposited further
from the snout
- Finer material can be transported further as they
required less energy and are deposited further
from the snout
- Fluvioglacial deposits are sorted, with the coarsest
deposits deposited first as loss of energy occurs
upon meltwater streams exiting snout of glacier
- Glacial till is a random mix of different sized deposits.
- Stratification
- Fluvioglacial till deposits are layered vertically due
to the seasonal nature of meltwater - glacial till
deposits are not.
- Fluvioglacial till deposits are layered vertically due
to the seasonal nature of meltwater - glacial till
deposits are not.
- Location
- Fluvioglacial deposits
are usually found
beyond the limits of the
ice, whereas glacial
deposits never are.
- Fluvioglacial deposits
are usually found
beyond the limits of the
ice, whereas glacial
deposits never are.
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