Index Catalog // ScholarsArchive@OSU

Changes in the atmospheric helium isotope ratio over the past 40 years

Creator:: Lupton, J. and Evans, L.
Abstract:: We have compared the helium isotope ratio in five samples of Pacific marine air spanning the 40 year period between 1973 and 2013 against a secondary gas standard. In a separate experiment we directly compared the ³He/⁴He ratio in air samples collected in 1973 and 2013 at the same location...
Resource Type:: Article
Full Text:: the past 40 years Changes in the atmospheric helium isotope ratio over the past 40 years Lupton, J

Early Selection for Improving Volume Growth in Coastal Douglas-fir Breeding Programs

Creator:: Ye, T. Z. and Jayawickrama, K. J. S.
Abstract:: Measurements on growth traits up to 41 years of age from 68 progeny sites in eight first-generation breeding zones of coastal Douglas-fir (Pseudotsuga menziesii [MIRB.] FRANCO var. menziesii) in the US Pacific Northwest were used to investigate age trends of genetic parameters and to determine optimum age of selection. Heritabilities...
Resource Type:: Article
Full Text:: . A., S. A. CAMPBELL, J. R. POWELL, B. E. WOLFE, R. M. CALLAWAY, G. C. THELEN, S. HALLET, D. PRATI

Vet Gazette ; November 23, 2009

Creator:: Oregon State University. College of Veterinary Medicine
Abstract:: Bi-weekly newsletter of the Oregon State University College of Veterinary Medicine.
Resource Type:: Other
Full Text:: echocardiography, Dr. David J. Sahn is Professor of Pediatrics (Cardiology), Diagnostic Radiology, and Obstetrics

j-em9027pests.pdf

Creator:: Oregon State University. Extension Service, Langellotto, Gail Ann, Anderson-Wilk, Mark, Bauer, Michael E., Dreves, Amy J., Fick, Barbara Jean, Gentle, Tom, Glick, G. (Gail), Locke, Kerry A., Long, L. E. (Lynn Edwards), 1953-, Lundin, Fred, Maul, Jerry Lee, McNeilan, Jan, McNeilan, Ray A., Morgan, Steve, Patterson, Pat, Penhallegon, Ross H., 1951-, Reynolds, Janice, Rogers, Bill, Rost, Bob, Savonen, Carol, Tiger, George, VanDerZanden, Ann Marie, 1966-, Weeks, Tom, and Welch, Teresa
Abstract:: A publication containing advice on a wide range of gardening topics, including composting, container gardens, fall/winter gardens, fertilizing, insect pests, plant diseases, planting guidelines, raised beds, site selection, slugs, soil improvement, tilling, warm-season crops, watering, and weeds. Includes regional tips for various parts of Oregon.

Vet Gazette ; April 13, 2009

Creator:: Oregon State University. College of Veterinary Medicine
Abstract:: Bi-weekly newsletter of the Oregon State University College of Veterinary Medicine.
Resource Type:: Other
Full Text:: of Life — Carol J. Colton For 19 years, Carol Colton served the OSU College of Veterinary Medicine

Helium isotope variations in Juan de Fuca ridge basalts

Creator:: Lupton, John E., Graham, David W., Delaney, John R., and Johnson, H. Paul
Abstract:: We have measured ³He/⁴He ratios and He and Ne concentrations on a suite of 24 basalt glasses from the neovolcanic zone of the Juan de Fuca Ridge (JdFR) from 44.6°N near the Blanco Transform up to 48.0°N on the Endeavour Segment. The helium isotope ratios exhibit a clear geographic variation,...
Resource Type:: Article
Full Text:: P/{Jflet. Sci. Lert. 110, 227-244, 1992. Lupton, J. E., Terrestrial inert gases: isotope tracer

Cretaceous-to-recent record of elevated ³He/⁴He along the Hawaiian-Emperor volcanic chain

Creator:: Keller, R. A., Graham, David W., Farley, K. A., Duncan, Robert A., and Lupton, J. E.
Abstract:: Helium isotopes are a robust geochemical tracer of a primordial mantle component in hot spot volcanism. The high ³He/⁴He (up to 35 RA, where RA is the atmospheric ³He/⁴He ratio of 1.39 X 10¯⁶) of some Hawaiian Island volcanism is perhaps the classic example. New results for picrites and basalts...
Resource Type:: Article
Full Text:: State University, Corvallis, Oregon 97331, USA J. E. Lupton Pacific Marine Environmental Laboratory

Hydrothermal activity in the Northwest Lau Backarc Basin: Evidence from water column measurements

Creator:: Lupton, J. E., Arculus, R. J., Resing, J., Massoth, G. J., Greene, R. R., Evans, L. J., and Buck, N.
Abstract:: The Northwest Lau Backarc Basin, consisting of the Northwest Lau Spreading Center (NWLSC) and the Rochambeau Rifts (RR), is unique in having elevated ³He/⁴He ratios (up to 28 R[subscript a]) in the erupted lavas, clearly indicating a hot spot or ocean island basalt (OIB)-type signature. This OIB-type helium signature does...
Resource Type:: Article
Full Text:: column measurements J. E. Lupton NOAA Pacific Marine Environmental Laboratory, Newport, Oregon 97365

Maxie J Peterson Thesis.doc

Creator:: Peterson, Maxie Jean
Abstract:: The end of the Cold War brought about changes within international political relations that resulted in expanded interest in global civil society. Such developments, like globalization and democratization, have encouraged the growth of social and political organizations. Political scientists have found that these inter-governmental and non-governmental organizations have a significant...

The Cobb hot spot: HIMU-DMM mixing and melting controlled by a progressively thinning lithospheric lid

Creator:: Chadwick, John, Keller, Randall, Kamenov, George, Yogodzinski, Gene, and Lupton, John
Abstract:: The Cobb Seamount Chain in the northeast Pacific basin records the composition of the Cobb hot spot for the past 33 Myr, as the migrating Juan de Fuca Ridge approached and ultimately overran it ca. 0.5 Myr ago. In this first comprehensive geochemical study of the Cobb chain, major and...
Resource Type:: Article
Full Text:: , and J. Lupton (2014). The Cobb hot spot: HIMU-DMM mixing and melting controlled by a progressively

ScholarsArchive@OSU

Changes in the atmospheric helium isotope ratio over the past 40 years

Early Selection for Improving Volume Growth in Coastal Douglas-fir Breeding Programs

Vet Gazette ; November 23, 2009

j-em9027pests.pdf

Vet Gazette ; April 13, 2009

Helium isotope variations in Juan de Fuca ridge basalts

Cretaceous-to-recent record of elevated ³He/⁴He along the Hawaiian-Emperor volcanic chain

Hydrothermal activity in the Northwest Lau Backarc Basin: Evidence from water column measurements

Maxie J Peterson Thesis.doc

The Cobb hot spot: HIMU-DMM mixing and melting controlled by a progressively thinning lithospheric lid

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