Index Catalog // ScholarsArchive@OSU

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

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:: consistent with depth about a ratio of 100 (Fig. 2C). Hole 858Ais exceptional and shows Cy(C2 + C3) ratios up

Lipid/bitumen maturation by hydrothermal activity in sediments of Middle Valley, leg 139

Creator:: Simoneit, Bernd R. T.
Abstract:: The accelerated diagenesis, maturation, and catagenesis of organic matter to hydrothermal petroleum was studied in sediments from Ocean Drilling Program Leg 139 in Middle Valley, northern Juan de Fuca Ridge. Sediments at Sites 855 and 856 have experienced high heat flow resulting in accelerated diagenesis of the immature organic matter...
Resource Type:: Article
Full Text:: discharge area (800 × 400 m) (Fig. IB). The vent field is located over a local basement high with a sediment

Detailed paleomagnetic and rock magnetic variability within three high-resolution study intervals from site 1233

Creator:: Lund, Steven P., Stoner, Joseph, Channell, James, and Lamy, Frank
Abstract:: We carried out a detailed rock magnetic and paleomagnetic study of deep-sea sediments from selected intervals of Site 1233 in order to assess whether they contain reproducible evidence for submillennial-scale environmental, climatic, and geomagnetic field variability. Three 1.5-m sediment intervals from oxygen isotope Stages 1, 2, and 3 were sampled...
Resource Type:: Article
Full Text:: (mcd) A R M ( x 10 -3 A /m ) Hole 1233D Hole 1233C Hole 1233B 4 3 4 3 2 4 3 2 A2

Organic matter and carbon isotope composition of carbonate nodules and associated sediments from middle valley, leg 139

Creator:: Boni, M., Simoneit, Bernd R. T., Früh-Green, G. L., Lief, R. N., and McKenzie, J. A.
Abstract:: Carbonate nodules and associated sediments from Ocean Drilling Program Leg 139 sites of the Middle Valley, Juan de Fuca Ridge, were studied using a combination of inorganic and organic geochemical techniques. The mineralogy and stable isotopic compositions defined three types of nodules, reflecting the conditions of carbonate precipitation. Nodule ingrowth...
Resource Type:: Article
Full Text:: , on a small circular hill (Bent Hill) that has a diameter of about 500 m and stands 60 m above the

Alkenones in sediments of Middle Valley, Leg 139 : application as thermal sensors

Creator:: Simoneit, Bernd R. T., Prahl, Fredrick, Leif, R. N., and Mao, S. Z.
Abstract:: The shallow sections of most holes drilled during Ocean Drilling Program Leg 139 contain alkenones derived from prymnesiophyte algae. The alkenones indicate a paleotemperature of the photic zone in the upper ocean during primary carbon fixation of 7°-15°C, with an average of 10.7°C. Based on laboratory hydrous pyrolyses these alkenones...
Resource Type:: Article
Full Text:: -Packard Model 5 890A, fitted with a 30 m × 0.25 mm capillary column coated with DB-1 (1.0 µm film

Millennial–scale CaCO₃ and C[subscript ORG] events along the northern and central California margins : stratigraphy and origins

Creator:: Lyle, Mitchell, Mix, Alan C., Ravelo, A. Christina, Andreasen, Dyke, Heusser, Linda, and Olivarez, Annette
Abstract:: Sediments from five Leg 167 drill sites and three piston cores were analyzed for C[subscript ORG] and CaCO₃. Oxygen isotope stratigraphy on benthic foraminifers was used to assign age models to these sedimentary records. We find that the northern and central California margin is characterized by k.y.-scale events that can...
Resource Type:: Article
Full Text:: form a depth transect from less than 1000 m below sea level (mbsl) to greater than 4000 mbsl. The

Dissolved organic carbon in interstitial waters from sediments of Middle Valley, leg 139

Creator:: Ran, Baiyun and Simoneit, Bernd R. T.
Abstract:: High-temperature combustion oxidation measurements of nonvolatile dissolved organic carbon (DOC) have been determined for pore waters from sediments of Middle Valley, Ocean Drilling Program Leg 139, as well as for overlying and near-bottom seawater. The DOC values in the interstitial waters are generally greater than those in the overlying water...
Resource Type:: Article
Full Text:: , et al., 1992), but there is one associated with a site of active venting 300 m south of the sulfide

Biogenic and terrigenous sedimetations at Ceara rise, western tropical Altantic, supports Pliocene - Pleistocene deep - water linkage between hemispheres

Creator:: Harris, Sara E., Mix, Alan C., and King, Terri
Abstract:: Calcium carbonate percentages at five Ceara Rise sites were estimated at 1- to 2-k.y. intervals over the past 5 m.y., using reflectance spectroscopy and magnetic susceptibility proxies. From these estimates and detailed correlations between sites, gradients of calcite and terrigenous sediment accumulation rates in a depth transect of sites reveal...
Resource Type:: Article
Full Text:: lved hal- 0 50 100 150 Site 926 Depth (mcd) 0 50 100 150 Si te 9 25 D ep th (m cd ) A 0

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

ScholarsArchive@OSU

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

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

Lipid/bitumen maturation by hydrothermal activity in sediments of Middle Valley, leg 139

Detailed paleomagnetic and rock magnetic variability within three high-resolution study intervals from site 1233

Organic matter and carbon isotope composition of carbonate nodules and associated sediments from middle valley, leg 139

Alkenones in sediments of Middle Valley, Leg 139 : application as thermal sensors

Millennial–scale CaCO₃ and C[subscript ORG] events along the northern and central California margins : stratigraphy and origins

Dissolved organic carbon in interstitial waters from sediments of Middle Valley, leg 139

Biogenic and terrigenous sedimetations at Ceara rise, western tropical Altantic, supports Pliocene - Pleistocene deep - water linkage between hemispheres

m-em9027fallandwinter.pdf

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