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Willamette and associated soils on late Pleistocene geomorphic surfaces, Polk County, Oregon

Creator:: Gelderman, Frederick W.
Abstract:: The morphology and genesis of soils of the Willamette series and of some Willamette-associated soils and their relationships to geomorphic surfaces were studied in an area near McCoy, Polk County, Oregon. Influences of regional extent, such as climate and parent material, were related to the soils and landforms. The soils...
Resource Type:: Masters Thesis
Full Text:: the opportunity of con- tinuing my formal education; to G. H. Simonson and J. L. Weiner for rving on

Stratigraphy and genesis of soils from volcanic ash in the Blue Mountains of Eastern Oregon

Creator:: Rai, Dhanpat, 1943-
Abstract:: Investigations were conducted to (1) determine the original pattern of deposition and thickness of ash in the Ochoco and Blue Mountain areas of Oregon, (2) determine if discontinuities exist in the parent material of these soils, (3) determine the degree of mixing of ash with other materials and evaluate reworking...
Resource Type:: Dissertation
Full Text:: - tinuing my formal education., and to Drs. G. H. Simonson, E. M. Taylor and W. W. Chilcote for serving on

Comparative study of some soil characteristics of grassland and forest/grassland transition in western Oregon

Creator:: Ezenwa, Matthew Ikechuku Sunday
Abstract:: Vegetation as a soil-forming factor was studied under forest transition and grass while attempting to keep other soil forming factors constant in the western part of the Willamette Valley, Oregon. The physiographic units consist chiefly of the interior foothills and slopes formed from an old basaltic flow with some interspersed...
Resource Type:: Masters Thesis
Full Text:: the author to this goal and beyond; to Dr. G. H. Simonson for intro- ducing me to the soils of the

Mineralogical and chemical characteristics of western Oregon Andic soils

Creator:: Franklin, William Talbert
Abstract:: A study was conducted to determine the mineralogy and chemical properties of "Ando-like" western Oregon soils. The samples were collected from 13 sites which formed mainly from basaltic rocks, a contact metamorphic rock, sedimentary rocks, and alluvium derived from sedimentary rock and from volcanic rock. All samples contained small amounts...
Resource Type:: Dissertation
Full Text:: times, Drs. M. E. Harward, E. G. Knox, G. H. Simonson, H. En lows, R. A. Peekama, and E. Piepmeir

A model for determining soil contrast and its application to five different soil orders

Creator:: Villamayor, Faustino Paysan
Abstract:: A well-defined, quantitative model for determining soil contrast was developed to improve soil survey interpretations concerning the effects of mixtures of different kinds of soils on agricultural land use. The model was evaluated by determining the levels and reasons for soil contrast on mapped soil areas representing 5 different landscapes,...
Resource Type:: Dissertation
Full Text:: appreciated. Drs. G. H. Simonson, C. L. Rosenfeld, D. R. Thomas and D. F. Grabe for serving as members of my

Techniques for identifying flood plains in Oregon

Creator:: Reckendorf, Frank Fred
Abstract:: Seven methods for delineating flood plains were evaluated. The methods are classified : (1) Geomorphic Technique; (2) Soils Technique; (3) Botanical Technique; (4) Hydrologic Technique; (5) Hydrologic- Hydraulic Technique; (6) Historical Technique; and (7) "Combination Method". All of the methods, except the Botanical Technique and the Hydrologic-Hydraulic Technique, were compared...
Resource Type:: Dissertation

Description of the plant communities and succession of the Oregon coast grasslands

Creator:: Ripley, James Douglas
Abstract:: In an effort to describe the plant communities and succession of the Oregon coastal grasslands, vegetation and environmental data were collected from 75 stands at 24 separate locations ranging from Cape Falcon in Tillamook County to Cape Ferrelo in Curry County. The vegetation data consisted of cover and frequency values...
Resource Type:: Dissertation
Full Text:: , Robert E. Frenkel and Gerald H. Simonson, for their guidance and support. The field assistance pro

Soil genesis, classification, and nitrogen cycling in forest ecosystems of the northwestern Rif region of Morocco

Creator:: Ben Jelloun, Hassane
Resource Type:: Dissertation
Full Text:: . D. Myrold, to my Co-advisor Dr. G. H. Simonson, and to Dr A. Ben Abid for their guidance

The geomorphology and stratigraphy of Elkins Road Watershed

Creator:: Glasmann, Joseph Reed
Resource Type:: Masters Thesis

Evaluation of different processing methods on the utilization of steam hydrolyzed feather meal by ruminants

Creator:: Steiner, Robert J.
Resource Type:: Masters Thesis
Full Text:: . Shires and Dr. G. H. Arscott for serving as members of my graduate committee. A special thanks for the

ScholarsArchive@OSU

Willamette and associated soils on late Pleistocene geomorphic surfaces, Polk County, Oregon

Stratigraphy and genesis of soils from volcanic ash in the Blue Mountains of Eastern Oregon

Comparative study of some soil characteristics of grassland and forest/grassland transition in western Oregon

Mineralogical and chemical characteristics of western Oregon Andic soils

A model for determining soil contrast and its application to five different soil orders

Techniques for identifying flood plains in Oregon

Description of the plant communities and succession of the Oregon coast grasslands

Soil genesis, classification, and nitrogen cycling in forest ecosystems of the northwestern Rif region of Morocco

The geomorphology and stratigraphy of Elkins Road Watershed

Evaluation of different processing methods on the utilization of steam hydrolyzed feather meal by ruminants

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