A reference time scale for Site U1385 (Shackleton Site) on the SW Iberian Margin
Variations in sediment color contain very strong precession signals at Site U1385, and the amplitude modulation of these cycles provides a powerful tool for developing an orbitally-tuned age model. We tuned the U1385 record by correlating peaks in L* to the local summer insolation maxima at 37°N. Th...
Published in: | Global and Planetary Change |
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Main Authors: | , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
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2015
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Online Access: | http://eprints.esc.cam.ac.uk/3643/ http://eprints.esc.cam.ac.uk/3643/1/1-s2.0-S0921818115001423-main.pdf http://eprints.esc.cam.ac.uk/3643/7/1-s2.0-S0921818115001423-fx1.jpg http://www.sciencedirect.com/science/article/pii/S0921818115001423 https://doi.org/10.1016/j.gloplacha.2015.07.002 |
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University of Cambridge, Department of Earth Sciences: ESC Publications |
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English |
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01 - Climate Change and Earth-Ocean Atmosphere Systems |
spellingShingle |
01 - Climate Change and Earth-Ocean Atmosphere Systems Hodell, D. Lourens, L. Crowhurst, S. Konijnendijk, T. Tjallingii, R. Jiménez-Espejod, F. Skinner, L. Tzedakis, P. C. Abrantes, Fatima Acton, Gary D. Alvarez Zarikian, Carlos A. Bahr, André Balestra, Barbara Barranco, Estefanìa Llave Carrara, Gabriela Ducassou, Emmanuelle Flood, Roger D. Flores, José-Abel Furota, Satoshi Grimalt, Joan Grunert, Patrick Hernández-Molina, Javier Kim, Jin Kyoung Krissek, Lawrence A. Kuroda, Junichiro Li, Baohua Lofi, Johanna Margari, Vasiliki Martrat, Belen Miller, Madeline D. Nanayama, Futoshi Nishida, Naohisa Richter, Carl Rodrigues, Teresa RodrÃguez-Tovar, Francisco J. Roque, Ana Cristina Freixo Sanchez Goñi, Maria F. Sierro Sánchez, Francisco J. Singh, Arun D. Sloss, Craig R. Stow, Dorrik A. V. Takashimizu, Yasuhiro Tzanova, Alexandrina Voelker, Antje Xuan, Chuang Williams, Trevor A reference time scale for Site U1385 (Shackleton Site) on the SW Iberian Margin |
topic_facet |
01 - Climate Change and Earth-Ocean Atmosphere Systems |
description |
Variations in sediment color contain very strong precession signals at Site U1385, and the amplitude modulation of these cycles provides a powerful tool for developing an orbitally-tuned age model. We tuned the U1385 record by correlating peaks in L* to the local summer insolation maxima at 37°N. The benthic δ18O record of Site U1385, when placed on the tuned age model, generally agrees with other time scales within their respective chronologic uncertainties. The age model is transferred to down-core data to produce a continuous time series of log(Ca/Ti) that reflect relative changes of biogenic carbonate and detrital sediment. Biogenic carbonate increases during interglacial and interstadial climate states and decreases during glacial and stadial periods. Much of the variance in the log(Ca/Ti) is explained by a linear combination of orbital frequencies (precession, tilt and eccentricity), whereas the residual signal reflects suborbital climate variability. The strong correlation between suborbital log(Ca/Ti) variability and Greenland temperature over the last glacial cycle at Site U1385 suggests that this signal can be used as a proxy for millennial-scale climate variability over the past 1.5 Ma. Millennial climate variability, as expressed by log(Ca/Ti) at Site U1385, was a persistent feature of glacial climates over the past 1.5 Ma, including glacial periods of the early Pleistocene (‘41-kyr world’) when boundary conditions differed significantly from those of the late Pleistocene (‘100-kyr world’). Suborbital variability was suppressed during interglacial stages and enhanced during glacial periods, especially when benthic δ18O surpassed ~ 3.3–3.5‰. Each glacial inception was marked by appearance of strong millennial variability and each deglaciation was preceded by a terminal stadial event. Suborbital variability may be a symptomatic feature of glacial climate or, alternatively, may play a more active role in the inception and/or termination of glacial cycles. |
format |
Article in Journal/Newspaper |
author |
Hodell, D. Lourens, L. Crowhurst, S. Konijnendijk, T. Tjallingii, R. Jiménez-Espejod, F. Skinner, L. Tzedakis, P. C. Abrantes, Fatima Acton, Gary D. Alvarez Zarikian, Carlos A. Bahr, André Balestra, Barbara Barranco, Estefanìa Llave Carrara, Gabriela Ducassou, Emmanuelle Flood, Roger D. Flores, José-Abel Furota, Satoshi Grimalt, Joan Grunert, Patrick Hernández-Molina, Javier Kim, Jin Kyoung Krissek, Lawrence A. Kuroda, Junichiro Li, Baohua Lofi, Johanna Margari, Vasiliki Martrat, Belen Miller, Madeline D. Nanayama, Futoshi Nishida, Naohisa Richter, Carl Rodrigues, Teresa RodrÃguez-Tovar, Francisco J. Roque, Ana Cristina Freixo Sanchez Goñi, Maria F. Sierro Sánchez, Francisco J. Singh, Arun D. Sloss, Craig R. Stow, Dorrik A. V. Takashimizu, Yasuhiro Tzanova, Alexandrina Voelker, Antje Xuan, Chuang Williams, Trevor |
author_facet |
Hodell, D. Lourens, L. Crowhurst, S. Konijnendijk, T. Tjallingii, R. Jiménez-Espejod, F. Skinner, L. Tzedakis, P. C. Abrantes, Fatima Acton, Gary D. Alvarez Zarikian, Carlos A. Bahr, André Balestra, Barbara Barranco, Estefanìa Llave Carrara, Gabriela Ducassou, Emmanuelle Flood, Roger D. Flores, José-Abel Furota, Satoshi Grimalt, Joan Grunert, Patrick Hernández-Molina, Javier Kim, Jin Kyoung Krissek, Lawrence A. Kuroda, Junichiro Li, Baohua Lofi, Johanna Margari, Vasiliki Martrat, Belen Miller, Madeline D. Nanayama, Futoshi Nishida, Naohisa Richter, Carl Rodrigues, Teresa RodrÃguez-Tovar, Francisco J. Roque, Ana Cristina Freixo Sanchez Goñi, Maria F. Sierro Sánchez, Francisco J. Singh, Arun D. Sloss, Craig R. Stow, Dorrik A. V. Takashimizu, Yasuhiro Tzanova, Alexandrina Voelker, Antje Xuan, Chuang Williams, Trevor |
author_sort |
Hodell, D. |
title |
A reference time scale for Site U1385 (Shackleton Site) on the SW Iberian Margin |
title_short |
A reference time scale for Site U1385 (Shackleton Site) on the SW Iberian Margin |
title_full |
A reference time scale for Site U1385 (Shackleton Site) on the SW Iberian Margin |
title_fullStr |
A reference time scale for Site U1385 (Shackleton Site) on the SW Iberian Margin |
title_full_unstemmed |
A reference time scale for Site U1385 (Shackleton Site) on the SW Iberian Margin |
title_sort |
reference time scale for site u1385 (shackleton site) on the sw iberian margin |
publishDate |
2015 |
url |
http://eprints.esc.cam.ac.uk/3643/ http://eprints.esc.cam.ac.uk/3643/1/1-s2.0-S0921818115001423-main.pdf http://eprints.esc.cam.ac.uk/3643/7/1-s2.0-S0921818115001423-fx1.jpg http://www.sciencedirect.com/science/article/pii/S0921818115001423 https://doi.org/10.1016/j.gloplacha.2015.07.002 |
geographic |
Greenland Shackleton |
geographic_facet |
Greenland Shackleton |
genre |
Greenland |
genre_facet |
Greenland |
op_relation |
http://eprints.esc.cam.ac.uk/3643/1/1-s2.0-S0921818115001423-main.pdf http://eprints.esc.cam.ac.uk/3643/7/1-s2.0-S0921818115001423-fx1.jpg Hodell, D. and Lourens, L. and Crowhurst, S. and Konijnendijk, T. and Tjallingii, R. and Jiménez-Espejod, F. and Skinner, L. and Tzedakis, P. C. and Abrantes, Fatima and Acton, Gary D. and Alvarez Zarikian, Carlos A. and Bahr, André and Balestra, Barbara and Barranco, Estefanìa Llave and Carrara, Gabriela and Ducassou, Emmanuelle and Flood, Roger D. and Flores, José-Abel and Furota, Satoshi and Grimalt, Joan and Grunert, Patrick and Hernández-Molina, Javier and Kim, Jin Kyoung and Krissek, Lawrence A. and Kuroda, Junichiro and Li, Baohua and Lofi, Johanna and Margari, Vasiliki and Martrat, Belen and Miller, Madeline D. and Nanayama, Futoshi and Nishida, Naohisa and Richter, Carl and Rodrigues, Teresa and RodrÃguez-Tovar, Francisco J. and Roque, Ana Cristina Freixo and Sanchez Goñi, Maria F. and Sierro Sánchez, Francisco J. and Singh, Arun D. and Sloss, Craig R. and Stow, Dorrik A. V. and Takashimizu, Yasuhiro and Tzanova, Alexandrina and Voelker, Antje and Xuan, Chuang and Williams, Trevor (2015) A reference time scale for Site U1385 (Shackleton Site) on the SW Iberian Margin. Global and Planetary Change, 133. pp. 49-64. ISSN 0921-8181 DOI https://doi.org/10.1016/j.gloplacha.2015.07.002 <https://doi.org/10.1016/j.gloplacha.2015.07.002> |
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https://doi.org/10.1016/j.gloplacha.2015.07.002 |
container_title |
Global and Planetary Change |
container_volume |
133 |
container_start_page |
49 |
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64 |
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1766020044167315456 |
spelling |
ftucambridgeesc:oai:eprints.esc.cam.ac.uk:3643 2023-05-15T16:30:19+02:00 A reference time scale for Site U1385 (Shackleton Site) on the SW Iberian Margin Hodell, D. Lourens, L. Crowhurst, S. Konijnendijk, T. Tjallingii, R. Jiménez-Espejod, F. Skinner, L. Tzedakis, P. C. Abrantes, Fatima Acton, Gary D. Alvarez Zarikian, Carlos A. Bahr, André Balestra, Barbara Barranco, Estefanìa Llave Carrara, Gabriela Ducassou, Emmanuelle Flood, Roger D. Flores, José-Abel Furota, Satoshi Grimalt, Joan Grunert, Patrick Hernández-Molina, Javier Kim, Jin Kyoung Krissek, Lawrence A. Kuroda, Junichiro Li, Baohua Lofi, Johanna Margari, Vasiliki Martrat, Belen Miller, Madeline D. Nanayama, Futoshi Nishida, Naohisa Richter, Carl Rodrigues, Teresa RodrÃguez-Tovar, Francisco J. Roque, Ana Cristina Freixo Sanchez Goñi, Maria F. Sierro Sánchez, Francisco J. Singh, Arun D. Sloss, Craig R. Stow, Dorrik A. V. Takashimizu, Yasuhiro Tzanova, Alexandrina Voelker, Antje Xuan, Chuang Williams, Trevor 2015-10 text image http://eprints.esc.cam.ac.uk/3643/ http://eprints.esc.cam.ac.uk/3643/1/1-s2.0-S0921818115001423-main.pdf http://eprints.esc.cam.ac.uk/3643/7/1-s2.0-S0921818115001423-fx1.jpg http://www.sciencedirect.com/science/article/pii/S0921818115001423 https://doi.org/10.1016/j.gloplacha.2015.07.002 en eng http://eprints.esc.cam.ac.uk/3643/1/1-s2.0-S0921818115001423-main.pdf http://eprints.esc.cam.ac.uk/3643/7/1-s2.0-S0921818115001423-fx1.jpg Hodell, D. and Lourens, L. and Crowhurst, S. and Konijnendijk, T. and Tjallingii, R. and Jiménez-Espejod, F. and Skinner, L. and Tzedakis, P. C. and Abrantes, Fatima and Acton, Gary D. and Alvarez Zarikian, Carlos A. and Bahr, André and Balestra, Barbara and Barranco, Estefanìa Llave and Carrara, Gabriela and Ducassou, Emmanuelle and Flood, Roger D. and Flores, José-Abel and Furota, Satoshi and Grimalt, Joan and Grunert, Patrick and Hernández-Molina, Javier and Kim, Jin Kyoung and Krissek, Lawrence A. and Kuroda, Junichiro and Li, Baohua and Lofi, Johanna and Margari, Vasiliki and Martrat, Belen and Miller, Madeline D. and Nanayama, Futoshi and Nishida, Naohisa and Richter, Carl and Rodrigues, Teresa and RodrÃguez-Tovar, Francisco J. and Roque, Ana Cristina Freixo and Sanchez Goñi, Maria F. and Sierro Sánchez, Francisco J. and Singh, Arun D. and Sloss, Craig R. and Stow, Dorrik A. V. and Takashimizu, Yasuhiro and Tzanova, Alexandrina and Voelker, Antje and Xuan, Chuang and Williams, Trevor (2015) A reference time scale for Site U1385 (Shackleton Site) on the SW Iberian Margin. Global and Planetary Change, 133. pp. 49-64. ISSN 0921-8181 DOI https://doi.org/10.1016/j.gloplacha.2015.07.002 <https://doi.org/10.1016/j.gloplacha.2015.07.002> cc_by CC-BY 01 - Climate Change and Earth-Ocean Atmosphere Systems Article PeerReviewed 2015 ftucambridgeesc https://doi.org/10.1016/j.gloplacha.2015.07.002 2020-08-27T18:09:44Z Variations in sediment color contain very strong precession signals at Site U1385, and the amplitude modulation of these cycles provides a powerful tool for developing an orbitally-tuned age model. We tuned the U1385 record by correlating peaks in L* to the local summer insolation maxima at 37°N. The benthic δ18O record of Site U1385, when placed on the tuned age model, generally agrees with other time scales within their respective chronologic uncertainties. The age model is transferred to down-core data to produce a continuous time series of log(Ca/Ti) that reflect relative changes of biogenic carbonate and detrital sediment. Biogenic carbonate increases during interglacial and interstadial climate states and decreases during glacial and stadial periods. Much of the variance in the log(Ca/Ti) is explained by a linear combination of orbital frequencies (precession, tilt and eccentricity), whereas the residual signal reflects suborbital climate variability. The strong correlation between suborbital log(Ca/Ti) variability and Greenland temperature over the last glacial cycle at Site U1385 suggests that this signal can be used as a proxy for millennial-scale climate variability over the past 1.5 Ma. Millennial climate variability, as expressed by log(Ca/Ti) at Site U1385, was a persistent feature of glacial climates over the past 1.5 Ma, including glacial periods of the early Pleistocene (‘41-kyr world’) when boundary conditions differed significantly from those of the late Pleistocene (‘100-kyr world’). Suborbital variability was suppressed during interglacial stages and enhanced during glacial periods, especially when benthic δ18O surpassed ~ 3.3–3.5‰. Each glacial inception was marked by appearance of strong millennial variability and each deglaciation was preceded by a terminal stadial event. Suborbital variability may be a symptomatic feature of glacial climate or, alternatively, may play a more active role in the inception and/or termination of glacial cycles. Article in Journal/Newspaper Greenland University of Cambridge, Department of Earth Sciences: ESC Publications Greenland Shackleton Global and Planetary Change 133 49 64 |