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This process is the most similar to glacial erosion. [2] It is most effective in rivers where the jointing is close enough to allow the blocks to be moved by river flow. [1] The process of removing the piece of bedrock can be caused by many different factors. A crack or a flex in the bedrock will initially make a disconnected piece of the ...
Sea level is the ultimate base level, but many streams have a higher "temporary" base level because they empty into another body of water that is above sea level or encounter bedrock that resists erosion. A concurrent process called lateral erosion refers to the widening of a stream channel or valley. When a stream is high above its base level ...
Dissolved load comprises a significant portion of the total material flux out of a landscape, and its composition is important in regulating the chemistry and biology of the stream water. The dissolved load is primarily controlled by the rate of chemical weathering, which depends on climate and weather conditions such as moisture and ...
Hydraulic action, most generally, is the ability of moving water (flowing or waves) to dislodge and transport rock particles.This includes a number of specific erosional processes, including abrasion, at facilitated erosion, such as static erosion where water leaches salts and floats off organic material from unconsolidated sediments, and from chemical erosion more often called chemical ...
Layers of chalk exposed by a river eroding through them Green land erosion. Valley or stream erosion occurs with continued water flow along a linear feature. The erosion is both downward, deepening the valley, and headward, extending the valley into the hillside, creating head cuts and steep banks. In the earliest stage of stream erosion, the ...
These bedrock terraces are the strath terraces and are erosional in nature. [6] Unpaired fluvial terraces on the South Fork of the Shoshone River, Park County, Wyoming, 1923. The river at left has encountered a formation of erosion-resistant volcanic breccia, causing it to downcut more rapidly on the right, leaving terraces of different elevations.
A chute cutoff channel can form during a flood resulting in an overbank flow where water goes over the banks of the river, creating erosion of the surrounding landscape. . More studies need to be done on how the magnitude of these floods and their recurrence interval are related to how often these chute cutoff channels for
The erosion associated with overland flow may occur through different methods depending on meteorological and flow conditions. If the initial impact of rain droplets dislodges soil, the phenomenon is called rainsplash erosion. If overland flow is directly responsible for sediment entrainment but does not form gullies, it is called "sheet erosion".