% Generated by roxygen2: do not edit by hand
% Please edit documentation in R/diagnostics-subordens-sibcs.R
\name{neossolo_litolico}
\alias{neossolo_litolico}
\title{Neossolos Litolicos (Cap 12): contato litico ou litico fragmentario
\\<= 50 cm.}
\usage{
neossolo_litolico(pedon)
}
\arguments{
\item{pedon}{A \code{\link{PedonRecord}}.}
}
\description{
v0.9.29 adds an "implicit lithic contact" heuristic for the FEBR /
BDsolos snapshot, where the surveyor often documents Neossolos
Litolicos by simply stopping the profile description at the rock
boundary (max profile depth \\<= 50 cm with no horizon explicitly
marked R / Cr / Rk and no B horizon described). Per SiBCS Cap 12
(p 219), Neossolos Litolicos are defined by lithic contact within
50 cm of the surface; in FEBR, this is signalled by the depth of
the deepest described horizon rather than by an explicit pseudo-R
record.
}
\details{
The heuristic fires only when:
\enumerate{
  \item the deepest \code{bottom_cm} value is \\<= 50 cm,
  \item no horizon designation begins with \code{B} (so we don't
        accidentally flag shallow Argissolos / Latossolos / etc.
        that have a Bt or Bw within 50 cm), AND
  \item the canonical \code{contato_litico} / \code{contato_litico_
        fragmentario} tests have NOT explicitly returned FALSE
        (i.e. the surveyor did not describe a non-rock material
        deeper than 50 cm).
}
Empirically, the heuristic flips ~190 of the 191 FEBR Litolicos
from "neossolos regoliticos" (catch-all) to "neossolos litolicos"
(correct), at the cost of a few false-positive Regoliticos that
happen to be shallow (the FEBR confusion analysis showed only ~30
shallow Regoliticos).
}
