How eluvial process determines the colour of E horizon lighter compared to O horizon?

  • $\begingroup$ Possible duplicate of What is the difference between eluvium and alluvium? $\endgroup$ – arkaia Jan 25 '18 at 22:21
  • $\begingroup$ What do E and O stand for? Maybe we can try to help make clearer what you're asking. $\endgroup$ – JeopardyTempest Jan 26 '18 at 7:08
  • $\begingroup$ @SudheerMuthusamy Question is on topic AFAIK but the way you have written it makes it unclear. If you can clarify what those terms mean and adding a few references I (and maybe others) can reopen the question $\endgroup$ – gansub Jan 27 '18 at 9:45
  • $\begingroup$ The designations of soil horizons as E and O are standardized in several classification systems but it would help to define them. The eluvial horizon, or E horizon, occurs in some soils where strong leaching of clay minerals, oxides, and organic material leaves pale colored mineral grains. The O horizon is the uppermost layer containing large amounts of organic matter so it is dark. The Wikipedia "Soil Horizon" article is pretty good. $\endgroup$ – haresfur Jan 29 '18 at 2:49

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