Progradation: Difference between revisions

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rmv glacial bullet and add portion that is more in line with the science to sediment input (i.e. the main cause)
top: remove the last three bullet points that are either unrelated to the topic, confusing, or redundant. Possibly re-add Chang Jiang later, but an example already exists.
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Progradation can be caused by:
 
* Periods of [[sea level|sea-level]] fall which result in [[marine regression]]. This can occur during major [[glaciation|continental glaciation]]s within [[ice age]]s, be caused by changes in the rates of [[seafloor spreading]] that affects the volume of the ocean basins, or tectonic effects on the regional mantle density structure that can change the [[geoid]] elevation.
 
* Extremely high sediment input, such as by the Huang He ([[Yellow River]]) in [[China]], which drains the [[Loess plateau]], or from high sediment loads in [[proglacial river]]s.
 
*Human activities. Surveys show that the increased population at the Huang He River in China has caused the progradation of its shoreline.
 
*Based on studies on the Chang Jiang river it's discovered that high accretion rate around the river mouth caused by the high concentration of river-borne sediment eventually resulting in low organic content in the sediments. This high accretion then results in progradation.
 
*Bed adjustment as well as regression.
 
==See also==