Reg soil evolve due to accumulation of fine sediment on alluvial surfaces.
I indicated the horizons in the following Reg soil. Are they true?
Hello,
Soil names depends on the recognition of diagnostic features and properties, one of the most important is the recognition of the structure of the horizon. In this kind of "young soil" it is important to see the difference between your parent material (C horizon) and the first signs of pedogenetic structuration and colour change (cambic horizon or Bw). Your A horizon seems also to be very weak and thin and reduce to 1 to 2 cm.
Anyway your soil is either a Fluvic Skeletic Cambisol if you can diagnose a Cambic horizon (Fluvic because developped from alluvial deposit; skeletic because the amount of carse element seens to be high)
or a Skeletic Fluvisol in the WRB soil classification if a real cambic horizon is not find.
thank you jerome.
I recognized a fine reddish layer under Av horizon. the fine layer creates as a result of entrapping fine sediment under clasts. so, i indicated the horizons as the following figure. I want to sure that the horizons i recognized be correct, and Are cambic horizon (a reddish layer beneath Av ) is as a part of A horizon? and other horizon are true
hello:
you can reed
https://faculty.unlv.edu/buckb/Dust%20posters/DanetalReg82.pdf
What means the "v" in your Av horizon?
Bw ("w" meaning developpment of colour or structure) is not part of A horizon, they are 2 different horizons.
You should read: ftp://ftp.fao.org/agl/agll/docs/guidel_soil_descr.pdf
ftp://ftp.fao.org/agl/agll/docs/guidel_soil_descr.pdf
Av means Vesicular layer. V is for Vesicular.
Chapter Aridic Soils, Patterned Ground, and Desert Pavements
Dear Javad,
before naming your horizon, you have to make a good description. Your A horizon is not an "Av" because the main diagnostic feature of your "Av" is a platy or columnar structure and vesicular voids. In your case I cannot see it.
http://www.nrcs.usda.gov/Internet/FSE_DOCUMENTS/nrcs142p2_050966.pdf
http://www.nrcs.usda.gov/Internet/FSE_DOCUMENTS/nrcs142p2_050966.pdf