Index Catalog // ScholarsArchive@OSU

Formation and stability of Al, Fe, and Mg interlayers in montmorillonite and vermiculite

Creator:: Carstea, Dumitru Dumitru
Abstract:: The effects of pH and time on the formation of hydroxy-Al, Fe, and Mg interlayer were compared for montmorillonite and vermiculite. The stability of interlayers was evaluated by sequentially increasing the severity of dissolution treatments and by subjecting the inter-layers to an HC1 treatment. The interlayer formation and stability were...
Resource Type:: Dissertation
Full Text:: montmorillonite and vermiculite AN ABSTRACT OF THE THESIS OF DUMITRU DUMITRU CARSTEA for the Ph.D. in SOILS

Conditions of Al, Fe, and Mg interlayer formation in montmorillonite and vermiculite

Creator:: Carstea, Dumitru Dumitru
Abstract:: The influence of pH (titration method) and of salt concentration and drying (drying method) upon the formation of synthetic AI, Fe, and Mg interlayers in montmorillonite and vermiculite was investigated. Interlayer formation was evaluated by X-ray diffraction measurements of basal spacings using a natural chlorite for comparison. The titration method...
Resource Type:: Masters Thesis
Full Text:: AN ABSTRACT OF THE THESIS OF DUMITRU DUMITRU CARSTEA for

For Students, By Students : An Internal Audit of the Oregon State University Student Sustainability Initiative

Creator:: Dumitru, Morgan B.
Abstract:: POSTER ABSTRACT: This study seeks to diagnose systemic issues facing the Oregon State University (OSU) Student Sustainability Initiative (SSI) and identify solutions with the greatest potential to improve the program. This study has to potential to provide similarly sized, structured, and focused organizations with a starting place for their own...
Resource Type:: Honors College Thesis

Eocene extension in Idaho generated massive sediment floods into the Franciscan trench and into the Tyee, Great Valley, and Green River basins

Creator:: Dumitru, Trevor A., Ernst, W.G., Wright, James E., Wooden, Joseph L., Wells, Ray E., Farmer, Lucia P., Kent, Adam J.R., and Graham, Stephan A.
Abstract:: The Franciscan Complex accretionary prism was assembled during an similar to 165-m.y.-long period of subduction of Pacific Ocean plates beneath the western margin of the North American plate. In such fossil subduction complexes, it is generally difficult to reconstruct details of the accretion of continent-derived sediments and to evaluate the...
Resource Type:: Article
Full Text:: North American plate, assembling the Franciscan accretionary prism (e.g., Ernst et al., 2009; Dumitru

⁴⁰Ar/³⁹Ar Dating of Umpqua Group Sediments within the Oregon Coast Range: Implications for Provenance

Creator:: Acito, Sydney K.
Abstract:: New detrital mica ages from the Umpqua Group of the Oregon Coast Range provide constraints on models of Eocene sedimentation. Based on sandstone petrography, previous studies assert that the Klamath Mountains to the south are the most likely source region for Umpqua Group sedimentary provenance. However, the presence of Late...
Resource Type:: Honors College Thesis
Full Text:: Challis Volcanics (Dumitru et al., 2013; Heller et al., 1985). To test the hypothesis that the Tyee may

Nature of interlayer material in silicate clays of selected Oregon soils

Creator:: Singleton, P. C.
Abstract:: A study was conducted to investigate the nature of hydroxy interlayers in the chlorite-like intergrade clays of three Oregon soils with respect to kind, amount, stability, and conditions of formation. The clays of the Hembre, Wren, and Lookout soils, selected to represent weathering products originating from basaltic materials under humid,...
Resource Type:: Dissertation
Full Text:: other hand, recent laboratory studies by Carstea (1965) have shown that it is much easier to form

Changes in lattice spacing of expanding clay minerals

Creator:: Sayegh, Antoine Hanna
Resource Type:: Dissertation
Full Text:: results, Dumitru Carstea, Department of Soils, Oregon State University. 12 medium of dispersion

OSU theses and dissertations : 1966-1970

Creator:: Guss, Margaret Basilia
Abstract:: A departmental and author index of Masters' Theses and Doctoral Dissertations accepted by the Graduate School.
Resource Type:: Book

OSU theses and dissertations : 1960-1965

Creator:: Brandt, Patricia A.
Abstract:: A departmental and author index of 1,388 Masters Theses and Doctoral Dissertations accepted by the Graduate School, Oregon State University.
Resource Type:: Book

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:: smectite treated to remove the interlayer material (Carstea, 1967) tended to become amorphous with

ScholarsArchive@OSU

Formation and stability of Al, Fe, and Mg interlayers in montmorillonite and vermiculite

Conditions of Al, Fe, and Mg interlayer formation in montmorillonite and vermiculite

For Students, By Students : An Internal Audit of the Oregon State University Student Sustainability Initiative

Eocene extension in Idaho generated massive sediment floods into the Franciscan trench and into the Tyee, Great Valley, and Green River basins

⁴⁰Ar/³⁹Ar Dating of Umpqua Group Sediments within the Oregon Coast Range: Implications for Provenance

Nature of interlayer material in silicate clays of selected Oregon soils

Changes in lattice spacing of expanding clay minerals

OSU theses and dissertations : 1966-1970

OSU theses and dissertations : 1960-1965

Mineralogical and chemical characteristics of western Oregon Andic soils

Limit your search

Academic Affiliation

Advisor

Commencement Year

Committee Member

Creator

Contributor

Date

Decade

Degree Field

Degree Level

Degree Name

File Format

Language

License

Location

Non-Academic Affiliation

Peer Reviewed

Resource Type

Rights Statement

Subject

Search Constraints

Search Results

Limit your search