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Articles 31 - 33 of 33
Full-Text Articles in Physical Sciences and Mathematics
Project Spotlight: Morro Bay Watershed 319 National Monitoring Program Project. National Water Quality Evaluation Project Notes., Karen Worcester, Thomas J. Rice, Jo Beth Mullens
Project Spotlight: Morro Bay Watershed 319 National Monitoring Program Project. National Water Quality Evaluation Project Notes., Karen Worcester, Thomas J. Rice, Jo Beth Mullens
Earth and Soil Sciences
No abstract provided.
Soil-Saprolite Profiles Derived From Mafic Rocks In The North Carolina Piedmont: I. Chemical, Morphological, And Mineralogical Characteristics And Transformations, T. J. Rice, S. W. Buol, S. B. Weed
Soil-Saprolite Profiles Derived From Mafic Rocks In The North Carolina Piedmont: I. Chemical, Morphological, And Mineralogical Characteristics And Transformations, T. J. Rice, S. W. Buol, S. B. Weed
Earth and Soil Sciences
The chemical, morphological and mineralogical properties of two Enon sandy loam (fine, mixed, thermic Ultic Hapludalfs) soilsaprolite profiles, one formed on gabbro and the other on metagabbro, are compared. Clay skins are scarce and stress cutans common in the argillic horizons of these soils. Iron-manganese concretions are concentrated in soil horizons immediately above the argillic horizons. The high shrink-swell capacities and slow permeabilities of the argillic horizons result in relatively shallow depths to paralithic contact with saprolite. The parent rock from the Enon profile near Albemarle, Stanly County, North Carolina is a medium-grained metagabbro with chlorite, hornblende, quartz, and calcic …
Soil-Saprolite Profiles Derived From Mafic Rocks In The North Carolina Piedmont: Ii. Association Of Free Iron Oxides With Soils And Clays, T. J. Rice, S. B. Weed, S. W. Buol
Soil-Saprolite Profiles Derived From Mafic Rocks In The North Carolina Piedmont: Ii. Association Of Free Iron Oxides With Soils And Clays, T. J. Rice, S. B. Weed, S. W. Buol
Earth and Soil Sciences
The association of free Fe oxides with soils and clays from two Enon sandy loam (Ultic Hapludalfs, fine, mixed, thermic) soilsaprolite profiles was studied. Goethite was the dominant Fe oxide identified. Lepidocrocite was detected in trace amounts in some samples. FeCBD/clay ratios were highest in the epipedons of these soils suggesting the concentrating of Fe oxides as a result of aluminosilicate mineral weathering. External (BET-N2) surface area measurements of non-deferrated and deferrated clays were analyzed in conjunction with electron micrographs of selected clay fractions to determine the association of free Fe oxides with aluminosilicate clays as a function of depth …