<p>How eluvial process determines the colour of E horizon lighter compared to O horizon?  </p>

CC BY-SA 3.0
2018-01-25T22:21:13.597Z
Possible duplicate of [What is the difference between eluvium and alluvium?](https://earthscience.stackexchange.com/questions/2901/what-is-the-difference-between-eluvium-and-alluvium)
arkaia
CC BY-SA 3.0
2018-01-26T07:08:45.210Z
What do E and O stand for?  Maybe we can try to help make clearer what you're asking.
JeopardyTempest
CC BY-SA 3.0
2018-01-29T02:49:03.967Z
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.
haresfur
<soil><soil-science>
How eluvial process determines the difference in colour of soil layers
Sudheer Muthusamy
# How eluvial process determines the difference in colour of soil layers

(Asked by: username_0 on 2018-01-25)

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

**Tags:** soil, soil-science

> **Comments:**
> **username_1**: Possible duplicate of [What is the difference between eluvium and alluvium?](https://earthscience.stackexchange.com/questions/2901/what-is-the-difference-between-eluvium-and-alluvium)  
> **username_2**: What do E and O stand for?  Maybe we can try to help make clearer what you're asking.  
> **username_3**: 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.  

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