Soil parent material stratigraphy and soil development, Cedar County, Iowa

Miller, Gerald A.

doi:10.31274/rtd-180815-4703

Cited by 5 publications

(5 citation statements)

References 29 publications

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“…As in other areas in eastern Iowa (Ruhe et al 1968;Miller 1974) the upper till of the classic Kansan area is the same upper till as that of the classic Iowan area (Szabo 1975). Loess and eolian sand of Late Wisconsinan age overlie the upper till on the uplands.…”

Section: General Quaternary Stratigraphymentioning

confidence: 91%

Two pollen diagrams from Quaternary deposits in east-central Iowa, U.S.A.

Szabo¹

1980

Can. J. Earth Sci.

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Two pollen analyses from Quaternary deposits located outside both the Illinoian and Wisconsinan limits of glaciation in east-central Iowa, U.S.A., are similar to other analyses in the Midwest. One analysis from sediments between two pre-Illinoian tills is high in coniferous pollen. The analysis suggests a cool late interglacial or an interstadial climate. The other analysis is from Late Wisconsinan sediments synchronous with the last increment of loess deposition. The pollen diagram may be divided into three major zones: zone 1 may represent a boreal parkland, zone 2 contains the spruce maximum about 14 000 radiocarbon years before present, and zone 3 shows an increase in pine and oak pollen about 11 000 years ago.

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Section: General Quaternary Stratigraphymentioning

confidence: 91%

Two pollen diagrams from Quaternary deposits in east-central Iowa, U.S.A.

Szabo¹

1980

Can. J. Earth Sci.

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“…Available phosphorus on transects 1 and 3 was determined by the procedure of Bray and Kurtz (1945) as modified by Miller (1974). This method is also known as the Bray I method.…”

Section: Available Phosphorusmentioning

confidence: 99%

Characterization of the loamy surficial sediments in a type area of the Iowan Erosion Surface

Wysocki

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Characterization of the Loamy Surficial Sediments within the Study Area 146 Origin of the sediments 148 Geomorphic and time setting 148 Loamy Sediments on the lowan Erosion Surface 150 Ruhe's Model of Landscape Evolution 152 Suggestions for Further Study of the Surficial Loamy Sediments 152 LITERATURE CITED 155 ACKNOWLEDGMENTS 163 APPENDIX A. SOIL PROFILE DESCRIPTIONS 165 List of Abbreviations 165 Texture 165 Mottles 165 Structure 165 Consistence 165 Clay films 166 Transect 4 Clay % = 26.6 e (2.79 X 10)(Distance) 53 Clay Content 20 (5.86 X Clay % = 23.6 e .56 (1.82 X 10)(Distance) Clay % = 21.1

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“…Both determinations were mainly restricted to the noncalcareous part of the pedons. The method used for AP determination was the Bray 1 extractant method (Bray and Kurtz, 1945) in a procedure modified by Miller (1974) Particle size analyses of <2-mni sieved samples were performed by the pipette method, and the USDA particle size classification system was used (Walter et al, 1978). The procedure is commonly used for till and other Quaternary materials in Iowa.…”

Section: Soil Chemical Analysismentioning

confidence: 99%

Soil and landscape properties of a subsurface irrigation project area, Polk County, Iowa

Charkhabi

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Ap-0 to 13 cm; very dark grayish brown (lOYR 3/2) loam; moderate medium granular structure parting to moderate medium subangular blocky; friable; medium acid, A-13 to 25 cm; very dark gray (lOYR 3/1) loam; moderate medium granular structure parting to moderate medium subangular blocky structure; friable; medium acid. AB-25 to 33 cm; very dark grayish brown to dark brown (lOYR 3/2 to 4/3) clay loam; moderate medium subangular blocky structure; friable; medium acid.Bwl-33 to 6A cm; yellowish brown (lOYR 5/4) clay loam; strong medium subangular blocky structure; friable; neutral.Bw2-64 to 89 cm; yellowish brown (lOYR 5/4) clay loam to loam; few medium faint yellowish brown (lOYR 5/4) mottling; moderate medium subangular blocky structure; friable; neutral.Bw3-89 to 114 cm; light olive brown (2.5Y 5/4) loam; common medium distinct yellowish brown (lOYR 5/4) mottling; moderate medium subangular blocky structure; friable; neutral. BC-114 to 1A2 cm; light olive brown (2,5YR 5/4) loam; common medium yellowish red (5Y 5/6) mottling; weak medium subangular blocky structure; friable; mildly alkaline. C-142 to 218 cm; yellowish brown to pale red (lOYR 5/6 to 2.5YR 6/2) loam; mottled; weak medium subangular blocky structure; friable; mildly alkaline.Cgl-218 to 295 cm; light brownish gray (lOYR 6/2) loam; many medium dark reddish gray to yellowish red (5YR 4/2 to 4/8) mottling; moderately alkaline; violently effervescence; gradual boundary.Cg2-295 to 310 cm; light brownish gray (lOYR 6/2) loam; common coarse dark brown (7.5YR 6/2); moderately alkaline violently effervescent; gradual boundary.

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Soil parent material stratigraphy and soil development, Cedar County, Iowa

Cited by 5 publications

References 29 publications

Two pollen diagrams from Quaternary deposits in east-central Iowa, U.S.A.

Two pollen diagrams from Quaternary deposits in east-central Iowa, U.S.A.

Characterization of the loamy surficial sediments in a type area of the Iowan Erosion Surface

Soil and landscape properties of a subsurface irrigation project area, Polk County, Iowa

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