Structural terraces are commonly paired and not always associated with river valleys.
2.
The preferential removal of softer material exposes the flat surface of the underlying harder layer creating the tread of a structural terrace.
3.
In geomorphology, a "'structural terrace "'is a terrace created by the differential erosion of flat-lying or nearly flat-lying layered strata.
4.
Evidence is that this construction was effected by the Incas, due to the work of the stone in blocks, the dimension of the enclosures and the structural terrace shapes of some sectors.
5.
At the East Fork Residence, at an elevation of seven thousand feet, Burton anchored the house to structural terraces planted with flowering crab apple trees and created veils of native trees through which to view the house.