Stable isotope record and age determination of ODP Site 121-758 in the northeastern Indian Ocean, supplement to: Chen, Jiajie; Farrell, John W; Murray, David W; Prell, Warren L (1995): Timescale and paleoceanographic implications of a 3.6 m.y. oxygen isotope record from the northeast Indian Ocean (Ocean Drilling Program Site 758). Paleoceanography, 10(1), 21-48
Numerous studies have shown that delta18O records from benthic and planktonic foraminifera, primarily a proxy of global ice volume variations, reflect Milankovitch periodicities. To study climatic response to orbital forcing at Ocean Drilling Program site 758, we have generated continuous delta18O a...
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ftdatacite:10.1594/pangaea.696412 2023-05-15T18:01:11+02:00 Stable isotope record and age determination of ODP Site 121-758 in the northeastern Indian Ocean, supplement to: Chen, Jiajie; Farrell, John W; Murray, David W; Prell, Warren L (1995): Timescale and paleoceanographic implications of a 3.6 m.y. oxygen isotope record from the northeast Indian Ocean (Ocean Drilling Program Site 758). Paleoceanography, 10(1), 21-48 Chen, Jiajie Farrell, John W Murray, David W Prell, Warren L 1995 application/zip https://dx.doi.org/10.1594/pangaea.696412 https://doi.pangaea.de/10.1594/PANGAEA.696412 en eng PANGAEA - Data Publisher for Earth & Environmental Science https://dx.doi.org/10.1029/94pa02290 Creative Commons Attribution 3.0 Unported https://creativecommons.org/licenses/by/3.0/legalcode cc-by-3.0 CC-BY Composite Core Leg121 Joides Resolution Ocean Drilling Program ODP Supplementary Collection of Datasets Collection article 1995 ftdatacite https://doi.org/10.1594/pangaea.696412 https://doi.org/10.1029/94pa02290 2022-02-08T16:02:21Z Numerous studies have shown that delta18O records from benthic and planktonic foraminifera, primarily a proxy of global ice volume variations, reflect Milankovitch periodicities. To study climatic response to orbital forcing at Ocean Drilling Program site 758, we have generated continuous delta18O and delta13C records from a single benthic foraminiferal species Cibicides wuellerstorfi for the last 3.6 m.y. and extended the planktonic foraminiferal isotope records of Farrell and Janecek (1991, doi:10.2973/odp.proc.sr.121.124.1991) (0-2.5 Ma, based on Globigerinoides sacculifer) to 3.6 Ma (Chen, 1994). We then constructed an age model by matching, correlating and tuning the benthic delta18O record to a model simulation of ice volume (Imbrie and Imbrie, 1980, doi:10.1126/science.207.4434.943). The filtered 41- and 23-kyr signals based on the resultant astronomically tuned age model are highly correlated to obliquity (r=0.83) and precession (r=0.75), respectively. Although derived with methodology different from Shackleton et al. (1990) and Hilgen (1991, doi:10.1016/0012-821X(91)90206-W, 1991, doi:10.1016/0012-821X(91)90082-S), our results generally agree with their published astronomical timescales for the time interval from 0 to 3.0 Ma, providing additional support for the newly emerging chronology based on orbital tuning. Slight discrepancies exist in the time interval from 3.0 to 3.6 Ma, suggesting several possibilities, including differences in the approaches of orbital tuning and the relatively low amplitude of delta18O variations in our record. However, even if the discrepancies are due to the relatively low amplitude of the isotope signals in our record at 3.0-3.6 Ma, our resultant timescale as a whole does not adversely affect our evaluation of the paleoclimatology and paleoceanography of the Indian Ocean, such as the evolution of the 100-, 41- and 23-kyr cycles, and variation of global ice volume and deepwater temperature during the past 3.6 m.y. Article in Journal/Newspaper Planktonic foraminifera DataCite Metadata Store (German National Library of Science and Technology) Indian Shackleton |
institution |
Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
English |
topic |
Composite Core Leg121 Joides Resolution Ocean Drilling Program ODP |
spellingShingle |
Composite Core Leg121 Joides Resolution Ocean Drilling Program ODP Chen, Jiajie Farrell, John W Murray, David W Prell, Warren L Stable isotope record and age determination of ODP Site 121-758 in the northeastern Indian Ocean, supplement to: Chen, Jiajie; Farrell, John W; Murray, David W; Prell, Warren L (1995): Timescale and paleoceanographic implications of a 3.6 m.y. oxygen isotope record from the northeast Indian Ocean (Ocean Drilling Program Site 758). Paleoceanography, 10(1), 21-48 |
topic_facet |
Composite Core Leg121 Joides Resolution Ocean Drilling Program ODP |
description |
Numerous studies have shown that delta18O records from benthic and planktonic foraminifera, primarily a proxy of global ice volume variations, reflect Milankovitch periodicities. To study climatic response to orbital forcing at Ocean Drilling Program site 758, we have generated continuous delta18O and delta13C records from a single benthic foraminiferal species Cibicides wuellerstorfi for the last 3.6 m.y. and extended the planktonic foraminiferal isotope records of Farrell and Janecek (1991, doi:10.2973/odp.proc.sr.121.124.1991) (0-2.5 Ma, based on Globigerinoides sacculifer) to 3.6 Ma (Chen, 1994). We then constructed an age model by matching, correlating and tuning the benthic delta18O record to a model simulation of ice volume (Imbrie and Imbrie, 1980, doi:10.1126/science.207.4434.943). The filtered 41- and 23-kyr signals based on the resultant astronomically tuned age model are highly correlated to obliquity (r=0.83) and precession (r=0.75), respectively. Although derived with methodology different from Shackleton et al. (1990) and Hilgen (1991, doi:10.1016/0012-821X(91)90206-W, 1991, doi:10.1016/0012-821X(91)90082-S), our results generally agree with their published astronomical timescales for the time interval from 0 to 3.0 Ma, providing additional support for the newly emerging chronology based on orbital tuning. Slight discrepancies exist in the time interval from 3.0 to 3.6 Ma, suggesting several possibilities, including differences in the approaches of orbital tuning and the relatively low amplitude of delta18O variations in our record. However, even if the discrepancies are due to the relatively low amplitude of the isotope signals in our record at 3.0-3.6 Ma, our resultant timescale as a whole does not adversely affect our evaluation of the paleoclimatology and paleoceanography of the Indian Ocean, such as the evolution of the 100-, 41- and 23-kyr cycles, and variation of global ice volume and deepwater temperature during the past 3.6 m.y. |
format |
Article in Journal/Newspaper |
author |
Chen, Jiajie Farrell, John W Murray, David W Prell, Warren L |
author_facet |
Chen, Jiajie Farrell, John W Murray, David W Prell, Warren L |
author_sort |
Chen, Jiajie |
title |
Stable isotope record and age determination of ODP Site 121-758 in the northeastern Indian Ocean, supplement to: Chen, Jiajie; Farrell, John W; Murray, David W; Prell, Warren L (1995): Timescale and paleoceanographic implications of a 3.6 m.y. oxygen isotope record from the northeast Indian Ocean (Ocean Drilling Program Site 758). Paleoceanography, 10(1), 21-48 |
title_short |
Stable isotope record and age determination of ODP Site 121-758 in the northeastern Indian Ocean, supplement to: Chen, Jiajie; Farrell, John W; Murray, David W; Prell, Warren L (1995): Timescale and paleoceanographic implications of a 3.6 m.y. oxygen isotope record from the northeast Indian Ocean (Ocean Drilling Program Site 758). Paleoceanography, 10(1), 21-48 |
title_full |
Stable isotope record and age determination of ODP Site 121-758 in the northeastern Indian Ocean, supplement to: Chen, Jiajie; Farrell, John W; Murray, David W; Prell, Warren L (1995): Timescale and paleoceanographic implications of a 3.6 m.y. oxygen isotope record from the northeast Indian Ocean (Ocean Drilling Program Site 758). Paleoceanography, 10(1), 21-48 |
title_fullStr |
Stable isotope record and age determination of ODP Site 121-758 in the northeastern Indian Ocean, supplement to: Chen, Jiajie; Farrell, John W; Murray, David W; Prell, Warren L (1995): Timescale and paleoceanographic implications of a 3.6 m.y. oxygen isotope record from the northeast Indian Ocean (Ocean Drilling Program Site 758). Paleoceanography, 10(1), 21-48 |
title_full_unstemmed |
Stable isotope record and age determination of ODP Site 121-758 in the northeastern Indian Ocean, supplement to: Chen, Jiajie; Farrell, John W; Murray, David W; Prell, Warren L (1995): Timescale and paleoceanographic implications of a 3.6 m.y. oxygen isotope record from the northeast Indian Ocean (Ocean Drilling Program Site 758). Paleoceanography, 10(1), 21-48 |
title_sort |
stable isotope record and age determination of odp site 121-758 in the northeastern indian ocean, supplement to: chen, jiajie; farrell, john w; murray, david w; prell, warren l (1995): timescale and paleoceanographic implications of a 3.6 m.y. oxygen isotope record from the northeast indian ocean (ocean drilling program site 758). paleoceanography, 10(1), 21-48 |
publisher |
PANGAEA - Data Publisher for Earth & Environmental Science |
publishDate |
1995 |
url |
https://dx.doi.org/10.1594/pangaea.696412 https://doi.pangaea.de/10.1594/PANGAEA.696412 |
geographic |
Indian Shackleton |
geographic_facet |
Indian Shackleton |
genre |
Planktonic foraminifera |
genre_facet |
Planktonic foraminifera |
op_relation |
https://dx.doi.org/10.1029/94pa02290 |
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.696412 https://doi.org/10.1029/94pa02290 |
_version_ |
1766170550275670016 |