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Colluvium (also colluvial material or colluvial soil) is a general name for loose, unconsolidated sediments that have been deposited at the base of hillslopes by either rainwash, sheetwash, slow continuous downslope creep, or a variable combination of these processes. Colluvium is typically composed of a heterogeneous range of rock types and ...
Distinguishing between colluvium and alluvium may not be easy, especially at valley edges where colluvial and alluvial materials may mix and become indistinguishable. Location and Composition ... alluvium carries fine-grained fertile soil (humus) from fertile areas hence enabling agricultural activities like growing of wheat, sugarcane, and ...
Colluvial soils have received increased attention in different fields of environmental and geoarchaeological research over the past two decades. However, their pedological functions and status as specific soil units have seldom been discussed. The concepts and general understanding of the term ‘colluvial soil’ often vary; the definition of ...
In that definition, colluvium is the product of alluvial (anschwemmung) processes, but is deposited, having not yet reached a perennial stream. In contrast, alluvium (alluvionen) is sediment deposited on seashores, lake shores, and by rivers. The verdict here is that the setting of the line between colluvium and alluvium can be different ...
sediment. colluvium, soil and debris that accumulate at the base of a slope by mass wasting or sheet erosion. It generally includes angular fragments, not sorted according to size, and may contain slabs of bedrock that dip back toward the slope, indicating both their place of origin and that slumping was the process of transportation. At the ...
Colluvial Environment. Colluvium is a type of parent material that moved down slope due to gravitational forces (in some cases water may play a role in initiation of the movement). Colluvium is heterogeneous, unsorted material of all particle sizes (from boulders to clay) with relatively little abrasion to round the particles. Consequently ...
Colluvial soils consist of locally transported detritus materials of soil horizons and parent materials of sloping terrains from the upper sections of the slopes through water erosion or landslides. They have been deposited at the foot of the slope or at various parts of it, where the local relief impedes the further surface flow of the ...
Colluvial soils, as the correlated sediments of soil erosion, represent a widespread geoarchive. These soils store the morphology data of the eroded soils and contain clues as to the processes of the eroded soils’ formation as well as indications of the pedogenesis which took place after the deposition. All of these processes are closely ...
Colluvial soil creep can be continuous, seasonal, or random. Its formation can be exacerbated by steeper slope gradients, bare soil surfaces, soil moisture exceeding its infiltration capacity, soil/sediment texture, rainfall and temperature regime, and human activities such as plowing.
In Central Europe a transformation of Luvisols due to shallowing of Bt horizons as a consequence of intense soil erosion processes and formation of colluvial soils in the lower parts of slopes is ...