Benthic foraminiferal stable isotope record from ODP Site 138-849 on the East Pacific Rise, supplement to: Mix, Alan C; Pisias, Nicklas G; Rugh, W D; Wilson, June; Morey, Ann E; Hagelberg, Teresa King (1995): Benthic foraminifer stable isotope record from Site 849 (0-5 Ma): local and global climate changes. In: Pisias, NG; Mayer, LA; Janecek, TR; Palmer-Julson, A; van Andel, TH (eds.), Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 138, 371-412
Benthic foraminifer and delta13C data from Site 849, on the west flank of the East Pacific Rise (0°11 'N, 110°31'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 Cibic...
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ftdatacite:10.1594/pangaea.701400 2023-05-15T13:59:34+02:00 Benthic foraminiferal stable isotope record from ODP Site 138-849 on the East Pacific Rise, supplement to: Mix, Alan C; Pisias, Nicklas G; Rugh, W D; Wilson, June; Morey, Ann E; Hagelberg, Teresa King (1995): Benthic foraminifer stable isotope record from Site 849 (0-5 Ma): local and global climate changes. In: Pisias, NG; Mayer, LA; Janecek, TR; Palmer-Julson, A; van Andel, TH (eds.), Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 138, 371-412 Mix, Alan C Pisias, Nicklas G Rugh, W D Wilson, June Morey, Ann E Hagelberg, Teresa King 1995 application/zip https://dx.doi.org/10.1594/pangaea.701400 https://doi.pangaea.de/10.1594/PANGAEA.701400 en eng PANGAEA - Data Publisher for Earth & Environmental Science https://dx.doi.org/10.2973/odp.proc.sr.138.120.1995 Creative Commons Attribution 3.0 Unported https://creativecommons.org/licenses/by/3.0/legalcode cc-by-3.0 CC-BY Composite Core Drilling/drill rig Leg94 Leg111 Leg114 Leg138 Glomar Challenger Joides Resolution Deep Sea Drilling Project DSDP Ocean Drilling Program ODP article Supplementary Collection of Datasets Collection 1995 ftdatacite https://doi.org/10.1594/pangaea.701400 https://doi.org/10.2973/odp.proc.sr.138.120.1995 2022-02-09T12:04:35Z Benthic foraminifer and delta13C data from Site 849, on the west flank of the East Pacific Rise (0°11 'N, 110°31'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, but isotopic offsets relative to Uvigerina peregrina appear roughly constant. Because of its location west of the East Pacific Rise, Site 849 yields a suitable record of mean Pacific Ocean delta13C, which approximates a global oceanic signal. The ~100-k.y.-period climate cycle, which is prevalent in delta18O does not dominate the long-term delta13C record. For delta13C, variations in the ~400- and 41-k.y. periods are more important. Phase lags of delta13C relative to ice volume in the 41- and 23-k.y. bands are consistent with delta13C as a measure of organic biomass. A model-calculated exponential response time of 1-2 k.y. is appropriate for carbon stored in soils and shallow sediments responding to glacial-interglacial climate change. Oceanic delta13C leads ice volume slightly in the 100-k.y. band, and this suggests another process such as changes in continental weathering to modulate mean river delta13C at long periods.The delta13C record from Site 849 diverges from that of Site 677 in the Panama Basin mostly because of decay of 13C-depleted organic carbon in the relatively isolated Panama Basin. North Atlantic to Pacific delta13C differences calculated using published data from Sites 607 and 849 reveal variations in Pliocene deep water within the range of those of the late Quaternary. Maximum delta13C contrast between these sites, which presumably reflects maximum influx of high-delta13C northern source water into the deep North Atlantic Ocean, occurred between 1.3 and 2.1 Ma, well after the initiation of Northern Hemisphere glaciation. Export of high-delta13C North Atlantic Deep Water from the Atlantic to the circumpolar Antarctic, as recorded by published delta13C data from Subantarctic Site 704, appears unrelated to the North Atlantic-Pacific delta13C contrast. To account for this observation, we suggest that deep-water formation in the North Atlantic reflects northern source characteristics, whereas export of this water into the circumpolar Antarctic reflects Southern Hemisphere wind forcing. Neither process appears directly linked to ice-volume variations. Article in Journal/Newspaper Antarc* Antarctic North Atlantic Deep Water North Atlantic DataCite Metadata Store (German National Library of Science and Technology) Antarctic Pacific |
institution |
Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
English |
topic |
Composite Core Drilling/drill rig Leg94 Leg111 Leg114 Leg138 Glomar Challenger Joides Resolution Deep Sea Drilling Project DSDP Ocean Drilling Program ODP |
spellingShingle |
Composite Core Drilling/drill rig Leg94 Leg111 Leg114 Leg138 Glomar Challenger Joides Resolution Deep Sea Drilling Project DSDP Ocean Drilling Program ODP Mix, Alan C Pisias, Nicklas G Rugh, W D Wilson, June Morey, Ann E Hagelberg, Teresa King Benthic foraminiferal stable isotope record from ODP Site 138-849 on the East Pacific Rise, supplement to: Mix, Alan C; Pisias, Nicklas G; Rugh, W D; Wilson, June; Morey, Ann E; Hagelberg, Teresa King (1995): Benthic foraminifer stable isotope record from Site 849 (0-5 Ma): local and global climate changes. In: Pisias, NG; Mayer, LA; Janecek, TR; Palmer-Julson, A; van Andel, TH (eds.), Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 138, 371-412 |
topic_facet |
Composite Core Drilling/drill rig Leg94 Leg111 Leg114 Leg138 Glomar Challenger Joides Resolution Deep Sea Drilling Project DSDP Ocean Drilling Program ODP |
description |
Benthic foraminifer and delta13C data from Site 849, on the west flank of the East Pacific Rise (0°11 'N, 110°31'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, but isotopic offsets relative to Uvigerina peregrina appear roughly constant. Because of its location west of the East Pacific Rise, Site 849 yields a suitable record of mean Pacific Ocean delta13C, which approximates a global oceanic signal. The ~100-k.y.-period climate cycle, which is prevalent in delta18O does not dominate the long-term delta13C record. For delta13C, variations in the ~400- and 41-k.y. periods are more important. Phase lags of delta13C relative to ice volume in the 41- and 23-k.y. bands are consistent with delta13C as a measure of organic biomass. A model-calculated exponential response time of 1-2 k.y. is appropriate for carbon stored in soils and shallow sediments responding to glacial-interglacial climate change. Oceanic delta13C leads ice volume slightly in the 100-k.y. band, and this suggests another process such as changes in continental weathering to modulate mean river delta13C at long periods.The delta13C record from Site 849 diverges from that of Site 677 in the Panama Basin mostly because of decay of 13C-depleted organic carbon in the relatively isolated Panama Basin. North Atlantic to Pacific delta13C differences calculated using published data from Sites 607 and 849 reveal variations in Pliocene deep water within the range of those of the late Quaternary. Maximum delta13C contrast between these sites, which presumably reflects maximum influx of high-delta13C northern source water into the deep North Atlantic Ocean, occurred between 1.3 and 2.1 Ma, well after the initiation of Northern Hemisphere glaciation. Export of high-delta13C North Atlantic Deep Water from the Atlantic to the circumpolar Antarctic, as recorded by published delta13C data from Subantarctic Site 704, appears unrelated to the North Atlantic-Pacific delta13C contrast. To account for this observation, we suggest that deep-water formation in the North Atlantic reflects northern source characteristics, whereas export of this water into the circumpolar Antarctic reflects Southern Hemisphere wind forcing. Neither process appears directly linked to ice-volume variations. |
format |
Article in Journal/Newspaper |
author |
Mix, Alan C Pisias, Nicklas G Rugh, W D Wilson, June Morey, Ann E Hagelberg, Teresa King |
author_facet |
Mix, Alan C Pisias, Nicklas G Rugh, W D Wilson, June Morey, Ann E Hagelberg, Teresa King |
author_sort |
Mix, Alan C |
title |
Benthic foraminiferal stable isotope record from ODP Site 138-849 on the East Pacific Rise, supplement to: Mix, Alan C; Pisias, Nicklas G; Rugh, W D; Wilson, June; Morey, Ann E; Hagelberg, Teresa King (1995): Benthic foraminifer stable isotope record from Site 849 (0-5 Ma): local and global climate changes. In: Pisias, NG; Mayer, LA; Janecek, TR; Palmer-Julson, A; van Andel, TH (eds.), Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 138, 371-412 |
title_short |
Benthic foraminiferal stable isotope record from ODP Site 138-849 on the East Pacific Rise, supplement to: Mix, Alan C; Pisias, Nicklas G; Rugh, W D; Wilson, June; Morey, Ann E; Hagelberg, Teresa King (1995): Benthic foraminifer stable isotope record from Site 849 (0-5 Ma): local and global climate changes. In: Pisias, NG; Mayer, LA; Janecek, TR; Palmer-Julson, A; van Andel, TH (eds.), Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 138, 371-412 |
title_full |
Benthic foraminiferal stable isotope record from ODP Site 138-849 on the East Pacific Rise, supplement to: Mix, Alan C; Pisias, Nicklas G; Rugh, W D; Wilson, June; Morey, Ann E; Hagelberg, Teresa King (1995): Benthic foraminifer stable isotope record from Site 849 (0-5 Ma): local and global climate changes. In: Pisias, NG; Mayer, LA; Janecek, TR; Palmer-Julson, A; van Andel, TH (eds.), Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 138, 371-412 |
title_fullStr |
Benthic foraminiferal stable isotope record from ODP Site 138-849 on the East Pacific Rise, supplement to: Mix, Alan C; Pisias, Nicklas G; Rugh, W D; Wilson, June; Morey, Ann E; Hagelberg, Teresa King (1995): Benthic foraminifer stable isotope record from Site 849 (0-5 Ma): local and global climate changes. In: Pisias, NG; Mayer, LA; Janecek, TR; Palmer-Julson, A; van Andel, TH (eds.), Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 138, 371-412 |
title_full_unstemmed |
Benthic foraminiferal stable isotope record from ODP Site 138-849 on the East Pacific Rise, supplement to: Mix, Alan C; Pisias, Nicklas G; Rugh, W D; Wilson, June; Morey, Ann E; Hagelberg, Teresa King (1995): Benthic foraminifer stable isotope record from Site 849 (0-5 Ma): local and global climate changes. In: Pisias, NG; Mayer, LA; Janecek, TR; Palmer-Julson, A; van Andel, TH (eds.), Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 138, 371-412 |
title_sort |
benthic foraminiferal stable isotope record from odp site 138-849 on the east pacific rise, supplement to: mix, alan c; pisias, nicklas g; rugh, w d; wilson, june; morey, ann e; hagelberg, teresa king (1995): benthic foraminifer stable isotope record from site 849 (0-5 ma): local and global climate changes. in: pisias, ng; mayer, la; janecek, tr; palmer-julson, a; van andel, th (eds.), proceedings of the ocean drilling program, scientific results, college station, tx (ocean drilling program), 138, 371-412 |
publisher |
PANGAEA - Data Publisher for Earth & Environmental Science |
publishDate |
1995 |
url |
https://dx.doi.org/10.1594/pangaea.701400 https://doi.pangaea.de/10.1594/PANGAEA.701400 |
geographic |
Antarctic Pacific |
geographic_facet |
Antarctic Pacific |
genre |
Antarc* Antarctic North Atlantic Deep Water North Atlantic |
genre_facet |
Antarc* Antarctic North Atlantic Deep Water North Atlantic |
op_relation |
https://dx.doi.org/10.2973/odp.proc.sr.138.120.1995 |
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.701400 https://doi.org/10.2973/odp.proc.sr.138.120.1995 |
_version_ |
1766268175324807168 |