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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:: -j m/; <r 93 _ 18 Ph 2 | 7 \ / 19 20 , i J m/z 99 _ J i U 5 I35 | 38 37 I 1500 2500 Scan

Error spectrum for the global M₂ ocean tide

Creator:: Ray, Richard D., Eanes, R. J., Egbert, Gary D., and Pavlis, N. K.
Abstract:: The most accurate determinations of the global ocean tides are currently based on altimeter measurements made by the Topex/Poseidon satellite. The error spectrum corresponding to the M₂ tidal solution is here estimated, primarily by inverse methods and secondarily by simple differencing in flatter than tidal signal spectrum, and it exceeds...
Resource Type:: Article
Full Text:: Error Spectrum for the Global M₂ Ocean Tide

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

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

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:: , M., Cherkaoui, A., Bodzin, R., and Villinger, H., 2003. Abrupt thermal transition reveals

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:: stratigraphy at Site 846 (tropical Pacific, 3°06'S, 90°49'W, 3307 m water depth), based on the benthic

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:: . Composite Sections ODP drilling recovers sediment cores from each hole sequentially in approximately 9.5-m

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

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:: 27 33 35 37 34/ / - 3 6 B i 2000 2500 35α R 34c, S C η m/z 2;? ' 2100 2200 2300 2460 2500 2530

Geological and geochemical contraints on the isotopic composition of interstitial waters from the Hydrate Ridge region, Cascadia Continental margin

Creator:: Tomaru, A. M., Matsumoto, R., Torres, Marta E., and Borowski, Walter S.
Abstract:: The isotopic compositions of interstitial waters collected from Hydrate Ridge during Ocean Drilling Program Leg 204 were measured to evaluate the fluid evolution of this accretionary prism. At shallow depths, the dissolved Cl- concentrations and δD and δ¹⁸O values of the interstitial water reflect changes in the salinity and the...
Resource Type:: Article
Full Text:: . Acta., 34:1161–1173. doi:10.1016/0016-7037(70)90056-6 Gehre, M., Hoefling, R., Kowski, P., and Strauch

ScholarsArchive@OSU

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

Error spectrum for the global M₂ ocean tide

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

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

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

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

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

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

Geological and geochemical contraints on the isotopic composition of interstitial waters from the Hydrate Ridge region, Cascadia Continental margin

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