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Spodic Horizon Brittleness in Leon (Aeric Haplaquod) Soils
Author(s) -
Brandon C. E.,
Buol S. W.,
Gamble E. E.,
Pope R. A.
Publication year - 1977
Publication title -
soil science society of america journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.836
H-Index - 168
eISSN - 1435-0661
pISSN - 0361-5995
DOI - 10.2136/sssaj1977.03615995004100050029x
Subject(s) - geology , silt , soil water , mineralogy , horizon , geochemistry , mineral , soil science , chemistry , geomorphology , mathematics , geometry , organic chemistry
Three delineations of Leon soils (Aeric Haplaquod; sandy, siliceous, thermic) on two geomorphic surfaces in the lower Coastal Plain of North Carolina were studied. Consistence of the upper part of the spodic horizon ranges from friable to brittle. Brittleness was associated with mineral material that was slightly finer in mean particle size, less well sorted, and slightly more fine skewed than spodic horizons that were not brittle. No chemical, mineralogical, or organic matter composition was related to brittleness. Brittle spodic layers are very different from nonbrittle layers in micromorphology, having their macropacking voids filled with organic matter and silt‐sized mineral material.