2016-03-01 Planning & Organisation Committee Agenda

Page 30 of 79

Soil Descriptions

Soil Origin
It is often difficult to accurately determine the origin
of a soil. Soils can generally be classified as:
e    Residual soil - derived from in-situ weathering
    of the underlying rock;
e   Transported soils - formed somewhere else
    and transported by nature to the site; or
e — Filling - moved by man.
Transported soils may be further subdivided into:
e — Alluvium - river deposits
e    Lacustrine - lake deposits
e   Aeolian - wind deposits
e    Littoral - beach deposits
e —_ Estuarine - tidal river deposits
e   Talus - scree or coarse colluvium
e    Slopewash    or   Colluvium   -_  transported
    downslope    by  gravity  assisted  by  water.
    Often includes angular rock fragments and
    boulders.

                                                                                                 July 2010

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