Section 312IAC25-1-16. "B horizon" defined  


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  •    "B horizon" means the mineral layer that is typically immediately beneath the A horizon. The B horizon commonly contains more clay, iron, or aluminum than the A horizon or the C horizon. (Natural Resources Commission; 312 IAC 25-1-16; filed Jun 21, 2001, 2:53 p.m.: 24 IR 3404, eff Dec 1, 2001; readopted filed May 29, 2007, 9:51 a.m.: 20070613-IR-312070146RFA; readopted filed Sep 19, 2013, 10:12 a.m.: 20131016-IR-312130125RFA)