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Some Relations Among Coastal Plain Soils and Geomorphic Surfaces in North Carolina
Author(s) -
Daniels R. B.,
Gamble E. E.,
Cady J. G.
Publication year - 1970
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/sssaj1970.03615995003400040031x
Subject(s) - weathering , gibbsite , soil water , geology , kaolinite , subaerial , water table , pedogenesis , soil morphology , soil science , hydrology (agriculture) , geochemistry , soil classification , groundwater , geotechnical engineering
Abstract Soils on the upper and middle Coastal Plain surfaces in North Carolina have been exposed to surface weathering for about 3‐ to 10‐million years. This makes it possible to evaluate the effect of soil formation of long duration on soil properties. Solum thickness, percentage of soils with plinthite, and gibbsite content increase from the youngest to the oldest surface, but kaolinite content and percentage of soils with Be bodies decrease in this direction. Solum thickness, percent of soils with plinthite, gibbsite and kaolinite content and percentage of soils with Be bodies have a curvilinear change with time. Soil properties are not always related to the total time of subaerial weathering because some soil processes do not begin for a million or more years after weathering starts. Changing internal soil environments produced by changing water‐table regimes is a major factor influencing soil formation in these soils. Changing water‐table regimes probably are produced largely by landscape evolution.