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The Characterization of Some Soils Developed from Mixed Brown and Gray Tills in Central Minnesota
Author(s) -
Grimes Myron F.,
Arneman Harold F.
Publication year - 1965
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/sssaj1965.03615995002900010025x
Subject(s) - soil water , calcareous , mineralogy , geology , usda soil taxonomy , bulk density , soil science , soil classification , paleontology
Superposition and interbedding of various glacial drifts of the Wisconsin age are common in central Minnesota. Morphological characteristics of soils developed from calcareous gray till (Hayden series), noncalcareous brown till (Flak), and from mixed tills (Holdingford) are shown in the profile descriptions. The series were characterized in the laboratory by pebble identification, particle size distribution, bulk density, moisture holding capacity, total exchangeable cations, exchangeable calcium, magnesium, and hydrogen, percent base saturation, pH, and C/N ratio. The characterization of the profiles studied showed definite morphological, physical, and chemical differences between the soils developed from the mixed tills and those from the unmixed modal brown or gray tills. The study shows the need for a series separation between these soils.