Index Catalog // ScholarsArchive@OSU

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

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

Data report : major and trace element data for leg 202 sites 1233 and 1234

Creator:: McManus, James
Abstract:: The exchange of waters between the Pacific and the Southern Oceans occurs along the eastern boundary of the South Pacific. Because water masses of the Antarctic provide a connection among the world's ocean basins, these water masses maintain the ability to influence changes in ocean circulation and climate (Lynch-Stieglitz et...
Resource Type:: Article
Full Text:: bottom water oxygen concentrations. Sediments at Site 1233 are bathed by AAIW at a water depth of 838 m

Color Reflectance Spectroscopy : a tool for rapid characterization of deep-sea sediments

Creator:: Mix, Alan C., Rugh, W., Pisias, Nicklas G., Veirs, S., and Leg 138 Scientific Party
Abstract:: During ODP Leg 138, we tested a prototype instrument, developed at Oregon State University, for measuring light reflectance in 511 channels of the visible and near-infrared bands. The technique of reflectance spectroscopy has been used for some time in chemistry and mineralogy (e.g., Hunt, 1977; Gaffey, 1986) and has found...
Resource Type:: Article
Full Text:: , A. Kemp, M. Leinen, M. Levitan, and C. Ravelo),4 and the Leg 138 Scientific Party4 INTRODUCTION

Site surveys

Creator:: Mayer, Larry A., Pisias, Nicklas G., Mix, Alan C., Lyle, Mitchell, Arason, Pordur, and Mosher, D.
Abstract:: To facilitate the selection of drill sites for Leg 138, a site survey program was conducted on board the Scripps Institution of Oceanography's research vessel Thomas Washington (Cruise Venture 1). During this cruise, which departed San Diego on 30 August 1989 and arrived in Manzanillo, Mexico, on 4 October 1989,...
Resource Type:: Article
Full Text:: . 138 7. SITE SURVEYS1 Larry A. Mayer,2 N. G. Pisias,3 A. C. Mix,4 M. W. Lyle,5 P. Arason,5 and D

Paleoceanography of the Eastern Equatorial Pacific during the Neogene : synthesis of Leg 138 drilling results

Creator:: Pisias, Nicklas G., Mayer, Larry A., and Mix, Alan C.
Abstract:: The primary objective of Leg 138 was to provide detailed information about the ocean's response to global climate change during the Neogene. Two north south transects were drilled (95° and 110°W) within the region of equatorial divergence driven upwelling (and thus high accumulation rates and resolution) and spanning the major...
Resource Type:: Article
Full Text:: , N.G., Mayer, L.A., Janecek, T.R., Palmer Julson, A., and van Andel, T.H. (Eds.), 1995 Proceedings of

Seismic sequence stratigraphy and tectonic evolution of Southern Hydrate Ridge

Creator:: Chevallier, Johanna, Tréhu, Anne Martine, Bangs, Nathan Lawrence Bailey, Johnson, Joel E., and Meyer, H. Jack
Abstract:: This paper presents a seismic sequence and structural analysis of a high-resolution three-dimensional seismic reflection survey that was acquired in June 2000 in preparation for Ocean Drilling Program (ODP) Leg 204. The seismic data were correlated with coring and logging results from nine sites drilled in 2002 during Leg 204....
Resource Type:: Article
Full Text:: b ou nd ar y of M B A R I E M 30 0 su rv ey 1240 90 0 D ep th ( km ) Distance from

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

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

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

ScholarsArchive@OSU

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

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

Data report : major and trace element data for leg 202 sites 1233 and 1234

Color Reflectance Spectroscopy : a tool for rapid characterization of deep-sea sediments

Site surveys

Paleoceanography of the Eastern Equatorial Pacific during the Neogene : synthesis of Leg 138 drilling results

Seismic sequence stratigraphy and tectonic evolution of Southern Hydrate Ridge

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

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

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

Limit your search

Academic Affiliation

Advisor

Conference Name

Conference Section/Track

Creator

Contributor

Date

Decade

Degree Field

Degree Level

Degree Name

File Format

Language

License

Location

Non-Academic Affiliation

Peer Reviewed

Resource Type

Rights Statement

Subject

Search Constraints

Search Results

Limit your search