(Table 1) Oxygen and carbon isotopic values for mixed species of Cibicidoides at DSDP Hole 85-574, supplement to: Miller, Kenneth G; Thomas, Ellen (1985): Late Eocene to Oligocene benthic foraminiferal isotopic record, Site 574, equatorial Pacific. In: Mayer, L; Theyer, E; et al. (eds.), Initial Reports of the Deep Sea Drilling Project, Washington (U.S. Govt. Printing Office), 85, 771-777
Oxygen and carbon isotopic data from mixed species of the benthic foraminifer Cibicidoides at Site 574 in the equatorial Pacific are compared with benthic foraminiferal isotopic data from equatorial Pacific Site 77 (Keigwin and Keller, 1984) and western North Atlantic Site 563 (Miller and Fairbanks,...
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1985
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ftdatacite:10.1594/pangaea.803565 2023-05-15T17:13:52+02:00 (Table 1) Oxygen and carbon isotopic values for mixed species of Cibicidoides at DSDP Hole 85-574, supplement to: Miller, Kenneth G; Thomas, Ellen (1985): Late Eocene to Oligocene benthic foraminiferal isotopic record, Site 574, equatorial Pacific. In: Mayer, L; Theyer, E; et al. (eds.), Initial Reports of the Deep Sea Drilling Project, Washington (U.S. Govt. Printing Office), 85, 771-777 Miller, Kenneth G Thomas, Ellen 1985 text/tab-separated-values https://dx.doi.org/10.1594/pangaea.803565 https://doi.pangaea.de/10.1594/PANGAEA.803565 en eng PANGAEA - Data Publisher for Earth & Environmental Science https://dx.doi.org/10.2973/dsdp.proc.85.123.1985 Creative Commons Attribution 3.0 Unported https://creativecommons.org/licenses/by/3.0/legalcode cc-by-3.0 CC-BY Sample code/label DEPTH, sediment/rock AGE Cibicidoides spp., δ18O Cibicidoides spp., δ13C Drilling/drill rig DSDP/ODP/IODP sample designation see references Leg85 Glomar Challenger Deep Sea Drilling Project DSDP Supplementary Dataset dataset Dataset 1985 ftdatacite https://doi.org/10.1594/pangaea.803565 https://doi.org/10.2973/dsdp.proc.85.123.1985 2021-11-05T12:55:41Z Oxygen and carbon isotopic data from mixed species of the benthic foraminifer Cibicidoides at Site 574 in the equatorial Pacific are compared with benthic foraminiferal isotopic data from equatorial Pacific Site 77 (Keigwin and Keller, 1984) and western North Atlantic Site 563 (Miller and Fairbanks, 1983, in press). Cibicidoides within the age range of about 33 to 35 Ma (within the early Oligocene) at the Pacific sites were lower in d13C than those of the same age from the North Atlantic site. For those from about 26 to 33 Ma (late early to late Oligocene), the equatorial Pacific and western North Atlantic d13C values were similar, whereas for those from about 26 to 12 Ma (latest Oligocene to Miocene) (see Miller and Fairbanks, 1983), Pacific values were lower. We suggest that this reflects bottom-water production analogous to modern North Atlantic Deep Water (NADW) in the early Oligocene and latest Oligocene to Miocene and reduced production of "NADW" in the late early to late Oligocene. High d18O values (approximately 2.0 per mil) were recorded at Site 574 for Cibicidoides at 36 Ma (earliest Oligocene); high, oscillating d18O values occurred from 30 to 29 Ma (near the early/late Oligocene boundary). These intervals of high d18O values apparently represent either bottom waters colder than at present or the presence of significant continental ice sheets. We suggest that major periods of continental glaciation occurred at approximately 36 and from 29 to 30 Ma. Dataset NADW North Atlantic Deep Water North Atlantic DataCite Metadata Store (German National Library of Science and Technology) Fairbanks Keller ENVELOPE(-58.406,-58.406,-62.073,-62.073) Pacific |
institution |
Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
English |
topic |
Sample code/label DEPTH, sediment/rock AGE Cibicidoides spp., δ18O Cibicidoides spp., δ13C Drilling/drill rig DSDP/ODP/IODP sample designation see references Leg85 Glomar Challenger Deep Sea Drilling Project DSDP |
spellingShingle |
Sample code/label DEPTH, sediment/rock AGE Cibicidoides spp., δ18O Cibicidoides spp., δ13C Drilling/drill rig DSDP/ODP/IODP sample designation see references Leg85 Glomar Challenger Deep Sea Drilling Project DSDP Miller, Kenneth G Thomas, Ellen (Table 1) Oxygen and carbon isotopic values for mixed species of Cibicidoides at DSDP Hole 85-574, supplement to: Miller, Kenneth G; Thomas, Ellen (1985): Late Eocene to Oligocene benthic foraminiferal isotopic record, Site 574, equatorial Pacific. In: Mayer, L; Theyer, E; et al. (eds.), Initial Reports of the Deep Sea Drilling Project, Washington (U.S. Govt. Printing Office), 85, 771-777 |
topic_facet |
Sample code/label DEPTH, sediment/rock AGE Cibicidoides spp., δ18O Cibicidoides spp., δ13C Drilling/drill rig DSDP/ODP/IODP sample designation see references Leg85 Glomar Challenger Deep Sea Drilling Project DSDP |
description |
Oxygen and carbon isotopic data from mixed species of the benthic foraminifer Cibicidoides at Site 574 in the equatorial Pacific are compared with benthic foraminiferal isotopic data from equatorial Pacific Site 77 (Keigwin and Keller, 1984) and western North Atlantic Site 563 (Miller and Fairbanks, 1983, in press). Cibicidoides within the age range of about 33 to 35 Ma (within the early Oligocene) at the Pacific sites were lower in d13C than those of the same age from the North Atlantic site. For those from about 26 to 33 Ma (late early to late Oligocene), the equatorial Pacific and western North Atlantic d13C values were similar, whereas for those from about 26 to 12 Ma (latest Oligocene to Miocene) (see Miller and Fairbanks, 1983), Pacific values were lower. We suggest that this reflects bottom-water production analogous to modern North Atlantic Deep Water (NADW) in the early Oligocene and latest Oligocene to Miocene and reduced production of "NADW" in the late early to late Oligocene. High d18O values (approximately 2.0 per mil) were recorded at Site 574 for Cibicidoides at 36 Ma (earliest Oligocene); high, oscillating d18O values occurred from 30 to 29 Ma (near the early/late Oligocene boundary). These intervals of high d18O values apparently represent either bottom waters colder than at present or the presence of significant continental ice sheets. We suggest that major periods of continental glaciation occurred at approximately 36 and from 29 to 30 Ma. |
format |
Dataset |
author |
Miller, Kenneth G Thomas, Ellen |
author_facet |
Miller, Kenneth G Thomas, Ellen |
author_sort |
Miller, Kenneth G |
title |
(Table 1) Oxygen and carbon isotopic values for mixed species of Cibicidoides at DSDP Hole 85-574, supplement to: Miller, Kenneth G; Thomas, Ellen (1985): Late Eocene to Oligocene benthic foraminiferal isotopic record, Site 574, equatorial Pacific. In: Mayer, L; Theyer, E; et al. (eds.), Initial Reports of the Deep Sea Drilling Project, Washington (U.S. Govt. Printing Office), 85, 771-777 |
title_short |
(Table 1) Oxygen and carbon isotopic values for mixed species of Cibicidoides at DSDP Hole 85-574, supplement to: Miller, Kenneth G; Thomas, Ellen (1985): Late Eocene to Oligocene benthic foraminiferal isotopic record, Site 574, equatorial Pacific. In: Mayer, L; Theyer, E; et al. (eds.), Initial Reports of the Deep Sea Drilling Project, Washington (U.S. Govt. Printing Office), 85, 771-777 |
title_full |
(Table 1) Oxygen and carbon isotopic values for mixed species of Cibicidoides at DSDP Hole 85-574, supplement to: Miller, Kenneth G; Thomas, Ellen (1985): Late Eocene to Oligocene benthic foraminiferal isotopic record, Site 574, equatorial Pacific. In: Mayer, L; Theyer, E; et al. (eds.), Initial Reports of the Deep Sea Drilling Project, Washington (U.S. Govt. Printing Office), 85, 771-777 |
title_fullStr |
(Table 1) Oxygen and carbon isotopic values for mixed species of Cibicidoides at DSDP Hole 85-574, supplement to: Miller, Kenneth G; Thomas, Ellen (1985): Late Eocene to Oligocene benthic foraminiferal isotopic record, Site 574, equatorial Pacific. In: Mayer, L; Theyer, E; et al. (eds.), Initial Reports of the Deep Sea Drilling Project, Washington (U.S. Govt. Printing Office), 85, 771-777 |
title_full_unstemmed |
(Table 1) Oxygen and carbon isotopic values for mixed species of Cibicidoides at DSDP Hole 85-574, supplement to: Miller, Kenneth G; Thomas, Ellen (1985): Late Eocene to Oligocene benthic foraminiferal isotopic record, Site 574, equatorial Pacific. In: Mayer, L; Theyer, E; et al. (eds.), Initial Reports of the Deep Sea Drilling Project, Washington (U.S. Govt. Printing Office), 85, 771-777 |
title_sort |
(table 1) oxygen and carbon isotopic values for mixed species of cibicidoides at dsdp hole 85-574, supplement to: miller, kenneth g; thomas, ellen (1985): late eocene to oligocene benthic foraminiferal isotopic record, site 574, equatorial pacific. in: mayer, l; theyer, e; et al. (eds.), initial reports of the deep sea drilling project, washington (u.s. govt. printing office), 85, 771-777 |
publisher |
PANGAEA - Data Publisher for Earth & Environmental Science |
publishDate |
1985 |
url |
https://dx.doi.org/10.1594/pangaea.803565 https://doi.pangaea.de/10.1594/PANGAEA.803565 |
long_lat |
ENVELOPE(-58.406,-58.406,-62.073,-62.073) |
geographic |
Fairbanks Keller Pacific |
geographic_facet |
Fairbanks Keller Pacific |
genre |
NADW North Atlantic Deep Water North Atlantic |
genre_facet |
NADW North Atlantic Deep Water North Atlantic |
op_relation |
https://dx.doi.org/10.2973/dsdp.proc.85.123.1985 |
op_rights |
Creative Commons Attribution 3.0 Unported https://creativecommons.org/licenses/by/3.0/legalcode cc-by-3.0 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1594/pangaea.803565 https://doi.org/10.2973/dsdp.proc.85.123.1985 |
_version_ |
1766071064720310272 |