Index Catalog // ScholarsArchive@OSU

Elemental and isotopic abundance of noble gases in formation fluids recovered in situ from the Chile Triple Juction

Creator:: Torres, Marta E., Bayer, Reinhold, Winckler, Gisela, Suckow, Axel, and Froelich, Philip N.
Abstract:: Sedimentary pore fluids from the Chile Triple Junction were sampled in situ, and analyzed for their noble gas composition. ³He/⁴He and ⁴He/Ne ratios were used to evaluate the fraction of helium in the samples that originated from mantle and radiogenic sources. The results show no primordial helium in samples recovered...
Resource Type:: Article
Full Text:: gas analysis is collected 1 m below the bottom of the drill string through titanium tubing, a 6 mL

Stable isotopes (¹⁸O/¹⁶O) and ⁸⁷Sr/⁸⁶Sr ratios in pore fluids of the Chile Triple Junction accretionary prism : implications for diagenesis and fluid migration

Creator:: Zheng, Yan, Froelich, Philip N., Torres, Marta E., and Dia, Aline N.
Abstract:: Oxygen and strontium isotopic composition of sedimentary pore fluids obtained by drilling at the Chile Triple Junction have been used to obtain information on the diagenesis and transport mechanisms of fluids. Samples were collected from three sites located on an east-west transect of the pre-collision zone (Sites 859, 860, and...
Resource Type:: Article
Full Text:: gradient decreases to 30°C/km at depth, while in the upper 70 m it is about 140°C/km. This may imply a

Thermogenic and bacterial hydrocarbon gases (free and sorbed) in Middle Valley, Juan De Fuca Ridge, Leg 139

Creator:: Whiticar, Michael J., Faber, Eckhard, Whelan, Jean K., and Simoneit, Bernd R. T.
Abstract:: The sorbed gases at all four Ocean Drilling Program Leg 139 sites (855, 856, 857, and 858) showed the unmistakable presence of thermogenic hydrocarbons. No indication of abiogenic gas was found. The evidence for the thermogenic hydrocarbons includes elevated contents of higher hydrocarbons (i.e., C₁/[C₂ + C₃] ca. 2-20), δ¹³CCH₄...
Resource Type:: Article
Full Text:: , 128°40.8 W, 2420 m water depth) As at Site 855, sulfate reduction was limited and in fact a slight

Subsurface temperatures beneath Southern Hydrate Ridge

Creator:: Tréhu, Anne Martine
Abstract:: During Ocean Drilling Program Leg 204, 80 in situ measurements of subseafloor temperature were made; 68 of these showed good frictional pulses on insertion and extraction from the seafloor and were used to constrain the subsurface temperature. Considering uncertainties from various sources, uncertainties in the in situ temperatures are estimated...
Resource Type:: Article
Full Text:: southern Hydrate Ridge. It is a coarse-grained, volcanic ash–rich horizon, 2–4 m thick, that is thought to

m-em9027fallandwinter.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.
Full Text:: a good chance you can garden almost year-round with a little extra effort. Many cool-season crops

Data report : trace element, Sr isotope, and Ge/SI composition of fluid and sediments in ridge-flank low-temperature hydrothermal environments

Creator:: Hulme, Samuel M., Wheat, C. Geoffrey, Coggon, Rosalind M., and McManus, James
Abstract:: The data presented in this report demonstrate significant improvements in the ability to constrain trace element and Sr isotopic concentrations in sediments overlying ridge-flank hydrothermal systems. Improved sampling methods orchestrated by the Integrated Ocean Drilling Program (i.e., advanced piston coring and anoxic sample processing) enabled the collection of reactive pore...
Resource Type:: Article
Full Text:: at 170.1 m (Cr = 10.4 nmol/kg, Cs = 14.6 nmol/kg, and Cd = 7700 pmol/kg). A majority of the trace

Spatial and temporal variability of late Neogene Equatorial Pacific carbonate : ODP Leg 138

Creator:: Hagelberg, T. K., Pisias, Nicklas G., Mayer, L. A., Shackleton, N. J., and Mix, Alan C.
Abstract:: High resolution, continuous records of GRAPE wet bulk density (a carbonate proxy) from Ocean Drilling Program Leg 138 provide one the opportunity for a detailed study of eastern equatorial Pacific Ocean carbonate sedimentation during the last 6 m.y. The transect of sites drilled spans both latitude and longitude in the...
Resource Type:: Article
Full Text:: Archer's model (1991a), a large (20 40 m) change in the gradient of CaCO3 saturation must have occurred

Benthic foraminiferal stable isotope stratigraphy of Site 846 : 0-1.8 Ma

Creator:: Mix, Alan C., Le, J., and Shackleton, N. J.
Abstract:: A stable-isotope stratigraphy at Site 846 (tropical Pacific, 3°06'S, 90°49'W, 3307 m water depth), based on the benthic foraminifers Cibicides wuellerstorfi and Uvigerina peregrina, yields a high-resolution record of deep-sea δ¹⁸O and δ¹³C over the past 1.8 Ma, with an average sampling interval of 3 k.y. Variance in the δ¹⁸O...
Resource Type:: Article
Full Text:: Pacific Ocean (3°06'S, 90°49'W, 3307 m water depth, Fig. 1). This site provides a high-resolution record

Sediment depths determined by comparison of grape and logging denisty data during Leg 138

Creator:: Mix, Alan C., Harris, Sara E., Hagelberg, T. K., Pisias, Nicklas G., and Shackleton, N. J.
Abstract:: Establishing true depths of recovered sediments is critical to determining sedimentation rates for high-resolution paleoclimatic studies. We have corrected the composite depth scale, which accounts for the entire continuous sedimentary sequence, so that sediment depths are consistent with logging depths, or "true" depths. We accomplished this by taking advantage of...
Resource Type:: Article
Full Text:: the section, because often 10 m or more is recovered in a single core when the core barrel only

Internal Tides and Turbulence along the 3000-m Isobath of the Hawaiian Ridge

Creator:: Lee, Craig M., Sanford, Thomas B., Kunze, Eric, Nash, Jonathan D., Merrifield, Mark A., and Holloway, Peter E.
Abstract:: Full-depth velocity and density profiles taken along the 3000-m isobath characterize the semidiurnal internal tide and bottom-intensified turbulence along the Hawaiian Ridge. Observations reveal baroclinic energy fluxes of 21 ± 5 kW m⁻¹ radiating from French Frigate Shoals, 17 ± 2.5 kW m⁻¹ from Kauai Channel west of Oahu, and...
Resource Type:: Article
Full Text:: Hawaiian Ridge CRAIG M. LEE,* ERIC KUNZE,� THOMAS B. SANFORD,* JONATHAN D. NASH,# MARK A. MERRIFIELD

ScholarsArchive@OSU

Elemental and isotopic abundance of noble gases in formation fluids recovered in situ from the Chile Triple Juction

Stable isotopes (¹⁸O/¹⁶O) and ⁸⁷Sr/⁸⁶Sr ratios in pore fluids of the Chile Triple Junction accretionary prism : implications for diagenesis and fluid migration

Thermogenic and bacterial hydrocarbon gases (free and sorbed) in Middle Valley, Juan De Fuca Ridge, Leg 139

Subsurface temperatures beneath Southern Hydrate Ridge

m-em9027fallandwinter.pdf

Data report : trace element, Sr isotope, and Ge/SI composition of fluid and sediments in ridge-flank low-temperature hydrothermal environments

Spatial and temporal variability of late Neogene Equatorial Pacific carbonate : ODP Leg 138

Benthic foraminiferal stable isotope stratigraphy of Site 846 : 0-1.8 Ma

Sediment depths determined by comparison of grape and logging denisty data during Leg 138

Internal Tides and Turbulence along the 3000-m Isobath of the Hawaiian Ridge

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