Index Catalog // ScholarsArchive@OSU

Start Over

Filtering by: Creator Harvey, C. J. Creator Mix, Alan C.

Planktonic foraminifera, sea surface temperatures, and mechanisms of oceanic change in the Peru and south equatorial currents, 0–150 ka BP

Creator:

Feldberg, Melissa J. and Mix, Alan C.

Abstract:

Planktonic foraminiferal faunas of the southeast Pacific indicate that sea surface temperatures (SST) have varied by as much as 8–10°C in the Peru Current, and by ~5–7°C along the equator, over the past 150,000 years. Changes in SST at times such as the Last Glacial Maximum reflect incursion of high-latitude...

Resource Type:

Article

Full Text:

, and mechanisms of oceanic change in the Peru and south equatorial currents, 0–150 ka BP Melissa J
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:

high δ 1 8 θ plots with low δ13C, and δ13C is multiplied by 2 to make 843 A.C. MIX, J. LE, N.J
Late Quaternary paleoceanography in the Eastern Equatorial Pacific Ocean from Planktonic Foraminifiers : a high-resolution record from Site 846

Creator:

Mix, Alan C., Le, J., and Shackleton, N. J.

Abstract:

High-resolution records of δ¹⁸0 and relative abundances of planktonic foraminifers were generated for ODP Leg 138 Site 846 for the past 800 k.y., with an average sampling interval of 3.6 k.y. The time scale was constructed by correlating the benthic δ¹⁸0 record to the SPECMAP and ODP Site 677 δ¹⁸0...

Resource Type:

Article

Full Text:

represent glacial stages. SS C J \j t lOOk.y. 1 I t • ••• 41 k.y

Refinement of a high-resolution, continuous sedimentary section for studying Equatorial Pacific Ocean paleoceanography, Leg 138

Creator:: Hagelberg, T. K., Pisias, Nicklas G., Shackleton, N. J., Mix, Alan C., and Harris, Sara E.
Abstract:: Ocean Drilling Program (ODP) Leg 138 was designed to study the late Neogene paleoceanography of the equatorial Pacific Ocean at time scales of thousands to millions of years. Crucial to this objective was the acquisition of continuous, high-resolution sedimentary records. It is well known that between successive advanced piston corer...
Resource Type:: Article
Full Text:: • > (, 1fv y v 849B 2H °"2H,.;w/ \ ,,., , J) 849B 3H ;; 0 1.9 1.8 1.7 1.5 1.4 1.3 1.2 0 10 15 20

Benthic foraminifer stable isotope record from Site 849 (0 - 5 Ma) : local and global climate changes

Creator:: Mix, Alan C., Pisias, Nicklas G., Rugh, W., Wilson, J., Morey, A., and Hagelberg, T. K.
Abstract:: Benthic foraminifer and δ¹³C data from Site 849, on the west flank of the East Pacific Rise (0°11'N, 110°3l'W; 3851 m), give relatively continuous records of deep Pacific Ocean stable isotope variations between 0 and 5 Ma. The mean sample spacing is 4 k.y. Most analyses are from Cibicides wuellerstorfi>...
Resource Type:: Article
Full Text:: rmcd). I. δ 1 8 θ (120-155 rmcd). J. δ13C (120-155 rmcd). All cores were cored with the APC, except in

Photosynthetic fractionation of ¹³C and concentrations of dissolved CO₂ in the central equatorial Pacific during the last 255,000 years

Creator:: Jasper, John P, Hayes, J. M., Mix, Alan C., and Prahl, Fredrick
Abstract:: Carbon isotopically based estimates of CO₂ levels have been generated from a record of the photosynthetic fractionation of ¹³C (≡εp) in a central equatorial Pacific sediment core that spans the last ~255 ka. Contents of ¹³C in phytoplanktonic biomass were determined by analysis of C37 alkadienones. These compounds are exclusive...
Resource Type:: Article
Full Text:: • and J. M. Hayes Biogeochemical Laboratories, Indiana University, Bloomington A. C. Mix and F. G

Atmospheric transmission of North Atlantic Heinrich events

Creator:: Hostetler, S. W., Clark, Peter U., 1956-, Bartlein, P. J., Mix, Alan C., and Pisias, Nicklas G.
Abstract:: We model the response o f the climate system during Heinrich event 2 (H2) by employing an atmospheric general circulation model, using boundary conditions based on the concept of a "canonical" Heinrich event. The canonical event is initialized with a full-height Laurentide ice sheet (LIS) and CLIMAP sea surface temperatures...
Resource Type:: Article
Full Text:: , M. Vautravers, M. Chapman, J.-C. Duplessy, M. Elliot, M. Arnold, J.-L. Turon, and G. Auffret

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:: hypotheses is derived primarily from sedimentary δ13C and CaCO3 records. δ13C indicates the efficiency of the

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:: .4 1.2 Log GRAPE . Log J ; Log GRAPE Log - GRAPE VA ü%•• ηf ! IOC 150 200 250 Depth (log

δ¹³C record of Upper North Atlantic Deep Water during the past 2.6 million years

Creator:: Oppo, D. W., Raymo, M. E., Lohmann, G. P., Mix, Alan C., Wright, J. D., and Prell, W. L.
Abstract:: Benthic foraminiferal δ¹³C data from site 502 in the Caribbean Sea (sill depth 1800 m) indicate that throughout the past 2.6 m.y., glacial δ¹³C values in the middepth Atlantic were higher during glaciations than interglaciations. This is interpreted as indicating a greater proportion of Upper North Atlantic Deep Water (UNADW)...
Resource Type:: Article
Full Text:: , 1 M. E. Raymo,2 G. P. Lohmann, 1 A. C. Mix, 3 J. D. Wright,4 and W. L. Prell5 Abstract. Benthic

ScholarsArchive@OSU

Planktonic foraminifera, sea surface temperatures, and mechanisms of oceanic change in the Peru and south equatorial currents, 0–150 ka BP

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

Late Quaternary paleoceanography in the Eastern Equatorial Pacific Ocean from Planktonic Foraminifiers : a high-resolution record from Site 846

Refinement of a high-resolution, continuous sedimentary section for studying Equatorial Pacific Ocean paleoceanography, Leg 138

Benthic foraminifer stable isotope record from Site 849 (0 - 5 Ma) : local and global climate changes

Photosynthetic fractionation of ¹³C and concentrations of dissolved CO₂ in the central equatorial Pacific during the last 255,000 years

Atmospheric transmission of North Atlantic Heinrich events

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

δ¹³C record of Upper North Atlantic Deep Water during the past 2.6 million years

Limit your search

Academic Affiliation

Creator

Date

Decade

Language

License

Peer Reviewed

Resource Type

Rights Statement

Search Constraints

Search Results

Limit your search