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Filtering by: Creator Harold, Gordon T. Remove constraint Creator: Harold, Gordon T. Advisor Schmitt, Roman A. Remove constraint Advisor: Schmitt, Roman A. Degree Field Chemistry Remove constraint Degree Field: Chemistry

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  • Sodium and manganese homogeneity in chondritic meteorites

    Creator:
    Osborn, Thomas Ward, III.
    Abstract:
    Four to six one-gram specimens separated by a distance of several inches were obtained from each of 23 large chondritic meteorites (approximately 1 kg each) representing the olivine bronzite (H5), olivine hypersthene (L6) and enstatite (E5) classifications. Each specimen was analyzed for Na and Mn via instrumental neutron activation analysis...
    Resource Type:
    Masters Thesis
    Full Text:
    lived radio- active isotopes on the order of 100 million year t,1/2 (half-life). This method is

  • A chemical study of the minerals from L-6 chondritic meteorites

    Creator:
    Curtis, David Ballantyne
    Abstract:
    Major and minor minerals have been separated from three L-6 chondritic meteorites (Alfianello, Colby (Wisconsin), and Leedey). Olivine, hypersthene, diopside, feldspar, troilite, chromite, phosphate minerals, and metallic minerals were analyzed for major, minor and trace elements using instrumental neutron activation analysis and radiochemical neutron activation analysis techniques. Concentrations df the...
    Resource Type:
    Dissertation
    Full Text:
    encouragement, I might never have done the job. Dr. Marvin Dudas and Dr. T. W. Osborn extended a great deal of

  • Elemental abundances in selected Oregon basalts

    Creator:
    Nicholson, Barry Howard
    Abstract:
    Ninety basalt samples from eight locations in central Oregon and one location in the Willamette Valley were analyzed for Si and Al. Fourteen basaltic rock specimens (> 1 kg each) from four buttes in the Willamette Valley were sampled and analyzed for Si, Al, Fe, Na, K, Mn, Cr, Co,...
    Resource Type:
    Masters Thesis
    Full Text:
    Administration, during the completion of this work. He also wishes to express appreciation to Drs. Gordon G. Go

  • Chemical composition of layered gabbros and mineral separates from the Red Sea area

    Creator:
    Miller, Donald Ashley
    Resource Type:
    Masters Thesis
    Full Text:
    , Saudi Arabia. I would also like to thank Dr. Gordon Go les of the University of Oregon, Center for

  • Chemical compositional studies of marginal rift and plateau basalts from Saudi Arabia

    Creator:
    Coles, D. G.
    Abstract:
    The analysis of 64 rock samples from Saudi Arabia and three samples from the axial trough of the Red Sea has been done. Instrumental neutron activation analysis (INAA) was the analytical tool used for the analysis of at least 18 and as many as 24 elements in these 67 rock...
    Resource Type:
    Masters Thesis
    Full Text:
    Petroleum and Mineral Resources, Saudi Arabia. The author appreciates the help from T. V. Anderson and his

  • Copper homogeneity studies in meteorites

    Creator:
    Wong, Dennis Tung
    Abstract:
    The abundance of copper was determined in four to six one-gram specimens separated by a distance of several inches from each of 23 large chondritic fragments (greater than 1 kg) via instrumental neutron activation analysis and counting of the annihilation N-rays of ⁶⁴Cu. It is believed that an accuracy of...
    Resource Type:
    Masters Thesis
    Full Text:
    meteorites using the Rose- Tschermak-Brezina (R. T. B.) system as modified by Prior in 1920. The

  • The chemical composition of 61 individual Allende chondrules

    Creator:
    Warren, Richard Gregory
    Abstract:
    The abundances of 12 elements, Fe, A1, Na, Ni, Cr, Mn, Co, Ca, Sc, Ir, Sm and Eu have been determined by INAA in 61 individual chondrules (0.1-100 mg) separated from five Allende (C3) meteoritic fragments ( 25g). Ti and V have been determined in 18 of these chondrules, and...
    Resource Type:
    Masters Thesis
    Full Text:
    1.25 ± 0.06 1 Pr 0.20 ± 0.01 0.2 Nd 0.91 ± 0.05 0.9 Sm 0.29 t 0.01 0.S Eu 0.107 ± 0.005 0.1 Gd

  • Variations in trace element abundances in small fragments from a single terrestrial basaltic flow : applications to 59 Apollo-17 mare basaltic fragments

    Creator:
    Rivera, Maria Rita Dacanay
    Abstract:
    Eleven hand specimen whole rock (WR) samples (25-200 g each) and 33 fragments (0.5-0.8 g each) from a single basaltic flow at Picture Gorge, Oregon were analyzed via instrumental neutron activation analysis (INAA) for 12 elements (Na, Fe, Cr, Sc, Co, La, Sm, Eu, Yb, Lu, Hf and Ta). Standard...
    Resource Type:
    Masters Thesis
    Full Text:
    throughout the project proved invaluable. Dr. M.-S. Ma and Dr. T. Fukuoka of the Oregon State University

  • Elemental abundances in the silicate phase of pallasitic meteorites

    Creator:
    Cooper, Thurman Dale
    Abstract:
    The silicate phases of 11 pallasites were analyzed instrumentally to determine the concentrations of some major, minor, and trace elements. The silicate phases were found to contain about 98% olivine with 1 to 2% accessory minerals such as lawrencite, schreibersite, troilite, chromite, and farringtonite present. The trace element concentrations, except...
    Resource Type:
    Masters Thesis
    Full Text:
    - alysis) is covered in great detail in the theses of D. G. Coles (1972), R. G. Warren (19 71), and T. W

  • A chemical and petrological study of igneous lithic clasts from the kapoeta howardite

    Creator:
    Smith, Monty Ray
    Abstract:
    Instrumental and radiochemical neutron activation analyses supported by electron microprobe mineral analyses (Paul Warren, University of New Mexico) and petrographic observations are presented for approximately forty individual clasts separated from the Kapoeta howardite. These clasts are classified into eucritic, cumulate-like, mafic (plagioclase ± olivine-bearing pyroxenites), pyroxenite, polymict and/or metal-rich and...
    Resource Type:
    Dissertation
    Full Text:
    activation analyses were provided by T. V. Anderson, S. L. Bennett, W. T. Carpenter, M. R. Conrady, A. G