TABLE 1 (continued)
Principal Soil Deposits
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*
*
* Pertinent Engineering
*
Major
*
*
*
* Division
Principal Soil Deposits
Characteristics
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*Glacial
*
*
*
*
*
*
*)))))))
*
*
*
*
*Material
* Glacial till. An accumulation of
* Consists of material of *
*transported
* debris, deposited beneath, at the
* all sizes in various
*
* lower limit of a glacier (terminal * and gravel to clay.
*
*by glaciers,
*or by
* moraine). Material lowered to
* Deposits are
*
*meltwater
* ground surface in an irregular sheet* unstratified. Generally *
*from the
* by a melting glacier is known as a * present favorable
*
* ground moraine.
* foundation conditions;
*
*glacier.
*
*
* but, rapid changes in
*
*
*
* conditions are common.
*
*
*
*
*
* Glacio-Fluvial deposits. Coarse and* Many local variations.
*
*
*
* fine-grained material deposited by * Generally present
*
*
* streams of meltwater from glaciers. * favorable foundation
*
* Material deposited on ground surface* conditions.
*
*
*
* beyond terminal of glacier is known *
*
*
* as an outwash plain. Gravel ridges *
*
* known as kames and eskers.
*
*
*
*
*
*
*
*
* Glacio-Lacustrine deposits.
* Very uniform in a
*
*
* Material deposited within lakes by * horizontal direction.
*
* meltwater from glaciers. Consisting*
*
*
*
* of clay in central portions of
*
*
* lake and alternate layers of silty *
*
*
*
* clay or silt and clay (varved clay) *
*
* in peripheral zones.
*
*
*
*
*
*
*
*
*
*
*Marine
*
*
*
*))))))
*
*
*
*
*Material
* Shore deposits. Deposits of sands * Relatively uniform and
*
* and/or gravels formed by the
* of moderate to high
*
*transported
*and deposited * transporting, destructive, and
* density.
*
* sorting action of waves on the
*
*
*by ocean
*waves and
* shoreline.
*
*
*
*
*
*currents in
*shore and
* Marine clays. Organic and inorganic* Generally very uniform
*
*
*offshore
*
* Compressible and usually *
*areas.
*
*
* very sensitive to
*
*
*
* remolding.
*
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7.1-5
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