| 单词 | b horizon |
| 释义 | B horizonnoun Geology.the subsoil in a soil profile. Also called zone of accumulation. Compare A horizon, C horizon. Origin of B horizonFirst recorded in 1935–40 Words nearby B horizonbhishti, B.H.L., Bhn, Bhoodan, Bhopal, B horizon, bhp, BHS, BHT, Bhubaneshwar, Bhubaneswar Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020 British Dictionary definitions for B horizonB horizon nounthe layer of a soil profile immediately below the A horizon, containing deposits of leached material Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012 Scientific definitions for B horizonB horizon In ABC soil, the second and middle zone, characterized by an accumulation of soluble or suspended organic material, clay, iron, or aluminum. These materials originate in the A horizon and are transported to the B horizon through the process of eluviation. B horizons often have a blocky structure and are reddish in color due to the presence of oxidized metals. Also called zone of accumulation zone of illuviation The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved. |
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