Artificial deposits and modified land
Artificial deposits and modified land are constructed of and in part cut from rock and other earth materials at or on the earth's surface and so can be represented appropriately on a geologic map. Such land alterations are a result of human economics, aesthetics, or convenience; they are designed and constructed using widely varying degrees of care, depending mainly on expected use or need. Although the materials involved are geologic, the design, construction, and testing techniques are primarily those of civil engineering, particularly the specialty of soil mechanics (q.v.). These techniques share an area of overlap with the geologic specialty of engineering geology. For more technical information on the engineering aspects of land alteration, see Sowers and Sowers (1970) and Terzaghi and Peck (1967).
Characteristics of Modified Land
Land that has been altered by human activity can be classified in several ways. One, a strictly generic basis, differentiates excavated areas from filled...
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