Articles | Volume 6, issue 2
https://doi.org/10.5194/gchron-6-125-2024
© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/gchron-6-125-2024
© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
17 Apr 2024
Research article |
| 17 Apr 2024
| 17 Apr 2024
Evaluating manual versus automated benthic foraminiferal δ18O alignment techniques for developing chronostratigraphies in marine sediment records
Jennifer L. Middleton
CORRESPONDING AUTHOR
Lamont-Doherty Earth Observatory, Columbia University, Palisades, NY, USA
Julia Gottschalk
Institute of Geosciences, Kiel University, Kiel, Germany
Gisela Winckler
Lamont-Doherty Earth Observatory, Columbia University, Palisades, NY, USA
Department of Earth and Environmental Sciences, Columbia University, New York, NY, USA
Jean Hanley
Lamont-Doherty Earth Observatory, Columbia University, Palisades, NY, USA
Carol Knudson
Lamont-Doherty Earth Observatory, Columbia University, Palisades, NY, USA
Jesse R. Farmer
School for the Environment, University of Massachusetts Boston, Boston, MA, USA
Frank Lamy
Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven, Germany
Lorraine E. Lisiecki
Department of Earth Science, University of California, Santa Barbara, CA, USA
A full list of authors appears at the end of the paper.
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Cited articles
Ahn, S., Khider, D., Lisiecki, L. E., and Lawrence, C. E.: A probabilistic Pliocene–Pleistocene stack of benthic δ18O using a profile hidden Markov model, Dynamics and Statistics of the Climate System, 2, dzx002, https://doi.org/10.1093/climsys/dzx002, 2017.
Berger, A. and Loutre, M. F.: New Insolation values for the climate of the last 10 million years, Scientific Report 1988/13, Institute d'Astronomie et de Geophysique Georges Lemaitre, Universite Catholique de Louvain-la-Neuve, 1988.
Bickert, T., Curry, W., and Wefer, G.: Late Pliocene to Holocene (2.6–0 Ma) western equatorial Atlantic deep-water circulation: Inferences from benthic stable isotopes, Proceedings of the Ocean Drilling Program, Scientific Results, 154, 239–254, 1997.
Billups, K., Ravelo, A. C., and Zachos, J. C.: Early Pliocene deep water circulation in the western equatorial Atlantic: Implications for high-latitude cliamte change, Paleoceanography, 13, 84–95, 1998.
Channell, J. E. T. and Raymo, M. E.: Paleomagnetic record at ODP Site 980 (Feni Drift, Rockall) for the past 1.2 Myrs, Geochem. Geophy., 4, 1033, https://doi.org/10.1029/2002GC000440, 2003.
Costa, K. M., Hayes, C. T., Anderson, R. F., Pavia, F. J., Bausch, A., Deng, F., Dutay, J. C., Geibert, W., Heinze, C., Henderson, G., Hillaire-Marcel, C., Hoffmann, S., Jaccard, S. L., Jacobel, A. W., Kienast, S. S., Kipp, L., Lerner, P., Lippold, J., Lund, D., Marcantonio, F., McGee, D., McManus, J. F., Mekik, F., Middleton, J. L., Missiaen, L., Not, C., Pichat, S., Robinson, L. F., Rowland, G. H., Roy-Barman, M., Tagliabue, A., Torfstein, A., Winckler, G., and Zhou, Y.: 230Th Normalization: New Insights on an Essential Tool for Quantifying Sedimentary Fluxes in the Modern and Quaternary Ocean, Paleoceanogr. Paleocl., 35, e2019PA003820, https://doi.org/10.1029/2019PA003820, 2020.
deMenocal, P., Archer, D., and Leth, P.: Pleistocene variations in deep Atlantic circulation and calcite burial between 1.2 and 0.6 Ma: a combined data-model approach, in: Proceedings of the Ocean Drilling Program, Scientific Results, vol. 154, edited by: Shackleton, N. J., Curry, W. B., Richter, C., and Bralower, T. J., Ocean Drilling Program, https://doi.org/10.2973/odp.proc.sr.154.113.1997, 1997.
De Vleeschouwer, D., Vahlenkamp, M., Crucifix, M., and Pälike, H.: Alternating Southern and Northern Hemisphere climate response to astronomical forcing during the past 35 m.y, Geology, 45, 375–378, https://doi.org/10.1130/G38663.1, 2017.
Elderfield, H., Ferretti, P., Greaves, M., Crowhurst, S., Mccave, I. N., Hodell, D., and Piotrowski, A. M.: Evolution of Ocean Temperature and Ice Volume Through the Mid-Pleistocene Climate Transition, Science, 337, 704–709, https://doi.org/10.1126/science.1221294, 2012
Flower, B. P., Oppo, D. W., McManus, J. F., Venz, K. A., Hodell, D. A., and Cullen, J. L.: North Atlantic intermediate to deep water circulation and chemical stratification during the past 1 Myr, Paleoceanography, 15, 388–403, https://doi.org/10.1029/1999PA000430, 2000.
Ford, H. L. and Raymo, M. E.: Regional and global signals in seawater δ18O records across the mid-Pleistocene transition, Geology, 48, 113–117, https://doi.org/10.1130/G46546.1, 2020.
Francois, R., Bacon, M. P., and Suman, D. O.: Thorium 230 profiling in deep-sea sediments: High-resolution records of flux and dissolution of carbonate in the Equatorial Atlantic during the last 24,000 years, Paleoceanography, 5, 761–787, 1990.
Gersonde, R., Hodell, D. A., Blum, P., Andersson, C., Ausstin, W. E. N., Billups, K., Channell, J. E. T., Charles, C. D., Diekmann, B., Filippelli, G. M., Flores, J.-A., Hewitt, A. T., Howard, W. R., Ikehara, M., Janecek, T. R., Kanfoush, S. L., Kemp, A. E. S., King, S. L., Kleiven, H. F., Kuhn, G., Marino, M., Ninnemann, U. S., O'Connell, S., Ortiz, J. D., Stoner, J. S., Sugiyama, K., Warnke, D. A., and Zielinski, U.: Leg 177 Summary: Southern Ocean Paleoceanography, Proceedings of the Ocean Drilling Program, Initial Reports, 177, https://doi.org/10.2973/odp.proc.ir.177.1999, 1999.
Hobart, B., Lisiecki, L. E., Rand, D., Lee, T., and Lawrence, C. E.: Late Pleistocene 100-kyr glacial cycles paced by precession forcing of summer insolation, Nat. Geosci., 16, 717–722, https://doi.org/10.1038/s41561-023-01235-x, 2023.
Hodell, D. A., Charles, C. D., and Ninnemann, U. S.: Comparison of interglacial stages in the South Atlantic sector of the southern ocean for the past 450 kyr: implifications for Marine Isotope Stage (MIS) 11, Glob. Planet Change, 24, 7–26, 2000.
Hodell, D. A., Crowhurst, S. J., Lourens, L., Margari, V., Nicolson, J., Rolfe, J. E., Skinner, L. C., Thomas, N. C., Tzedakis, P. C., Mleneck-Vautravers, M. J., and Wolff, E. W.: A 1.5-million-year record of orbital and millennial climate variability in the North Atlantic, Clim. Past, 19, 607–636, https://doi.org/10.5194/cp-19-607-2023, 2023.
Huybers, P. and Wunsch, C.: A depth-derived Pleistocene age model: Uncertainty estimates, sedimentation variability, and nonlinear climate change, Paleoceanography, 19, PA1028, https://doi.org/10.1029/2002PA000857, 2004.
Imbrie, J., Hays, J. D., Martinson, D. G., McIntyre, A., Mix, A. C., Morley, J. J., Pisias, N. G., Prell, W. L., and Shackleton, N. J.: The orbital theory of Pleistocene climate: Support from a revised chronology of the marine δ18O record, in: Milankovitch and Climate, Part 1, edited by: Berger, A., Springer, New York, 269–305, 1984.
Jansen, E., Raymo, M. E., Blum, P., Andersen, E. S., Austin, W. E. N., Baumann, K.-H., Bout-Roumazeilles, V., Carter, S. J., Channell, J. E. T., Flower, B., Higgins, S., Hodell, D. A., Hood, J. A., Hyun, S. M., Ikehara, M., King, T., Larter, R., Lehman, B., Locker, S., McIntyre, K., McManus, J., Meng, L. B., O'Connell, S., Ortiz, J. D., Rack, F. R., Solheim, A., and Wei, W.: Proceedings of the Ocean Drilling Program, in: Initial Reports, edited by: Jansen, E., Raymo, M. E., and Blum, P., Ocean Drilling Program, College Station, TX, https://doi.org/10.2973/odp.proc.ir.162.1996, 1996.
Jöhnck, J., Holbourn, A., Kuhnt, W., and Andersen, N.: Oxygen isotope offsets in deep-water benthic foraminifera, J. Foramin. Res., 51, 225–244, https://doi.org/10.2113/gsjfr.51.3.225, 2021.
Kotov, S. and Pälike, H.: QAnalySeries – a cross-platform time series tuning and analysis tool, in: AGU Fall Meeting Abstracts, PP53D-1230, https://doi.org/10.5281/zenodo.10892222, 2018.
Labeyrie, L., Waelbroeck, C., Cortijo, E., Michel, E., and Duplessy, J. C.: Changements de l'hydrologie profonde pendant la dernière déglaciation, C. R. Geosci., 337, 919–927, https://doi.org/10.1016/j.crte.2005.05.010, 2005.
Lamy, F., Gersonde, R., Winckler, G., Esper, O., Jaeschke, A., Kuhn, G., Ullermann, J., Martinez-Garcia, A., Lambert, F., and Kilian, R.: Increased dust deposition in the Pacific Southern Ocean during glacial periods, Science, 343, 403–407, https://doi.org/10.1126/science.1245424, 2014.
Lamy, F., Winckler, G., Alvarez Zarikian, C. A., and Expedition 383 Scientists: Expedition 383 Preliminary Report: Dynamics of the Pacific Antarctic Circumpolar Current (DYNAPACC), International Ocean Discovery Program, https://doi.org/10.14379/iodp.pr.383.2019, 2019.
Laskar, J., Joutel, F., and Boudin, F.: Orbital, precessional, and insolation quantities for the Earth from −20 Myr to +10 Myr, Astron. Astrophys., 270, 522–533, 1993.
Laskar, J., Robutel, P., Joutel, F., Gastineau, M., Correia, A. C. M., and Levrard, B.: A long-term numerical solution for the insolation quantities of the Earth, Astron. Astrophys., 428, 261–285, https://doi.org/10.1051/0004-6361:20041335, 2004.
Lee, T., Rand, D., Lisiecki, L. E., Gebbie, G., and Lawrence, C.: Bayesian age models and stacks: combining age inferences from radiocarbon and benthic δ18O stratigraphic alignment, Clim. Past, 19, 1993–2012, https://doi.org/10.5194/cp-19-1993-2023, 2023.
Lin, L., Khider, D., Lisiecki, L. E., and Lawrence, C. E.: Probabilistic sequence alignment of stratigraphic records, Paleoceanography, 29, 976–989, https://doi.org/10.1002/2014PA002713, 2014.
Lisiecki, L. E. and Raymo, M. E.: A Pliocene-Pleistocene stack of 57 globally distributed benthic δ18O records, Paleoceanography, 20, 1–17, https://doi.org/10.1029/2004PA001071, 2005.
Lisiecki, L. E. and Raymo, M. E.: Diachronous benthic δ18O responses during late Pleistocene terminations, Paleoceanography, 24, PA3210, https://doi.org/10.1029/2009PA001732, 2009.
Lisiecki, L. E., Jones, A. M., Rand, D., Lee, T., and Lawrence, C. E.: Comparing age model techniques for the last glacial cycle: A case study of ten Iberian Margin sediment cores, Quaternary Sci. Rev., 287, 107559, https://doi.org/10.1016/j.quascirev.2022.107559, 2022.
Marchitto, T., Curry, W., Lynch-Stieglitz, J., Bryan, S., Cobb, K., and Lund, D.: Improved oxygen isotope temperature calibrations for cosmopolitan benthic foraminifera, Geochem. Cosmochim. Ac., 130, 1–11, 2014.
Mankinen, E. A. and Dalrymple, G. B.: Revised geomagnetic polarity time scale for the interval 0–5 M.y.B.P., J. Geophys. Res., 84, 615–626, https://doi.org/10.1029/jb084ib02p00615, 1979.
Marino, M., Maiorano, P., and Flower, B. P.: Calcareous nannofossil changes during the Mid-Pleistocene Revolution: Paleoecologic and paleoceanographic evidence from North Atlantic Site
Martínez-Garcia, A., Rosell-Melé, A., Jaccard, S. L., Geibert, W., Sigman, D. M., and Haug, G. H.: Southern Ocean dust-climate coupling over the past four million years, Nature, 476, 312–315, https://doi.org/10.1038/nature10310, 2011.
Martinson, D. G., Pisias, N. G., Hays, J. D., Imbrie, J., Moore, T. C., and Shackleton, N. J.: Age Dating and the Orbital Theory of the Ice Ages: Development of a High-Resolution 0 to 300,000-Year Chronostratigraphy, Quat. Res., 27, 1–29, 1987.
McManus, J. F., Oppo, D. W., and Cullen, J. L.: A 0.5-Million-Year Record of Millennial-Scale Climate Variability in the North Atlantic, Science, 283, 971–975, 1999.
Middleton, J., Gottschalk, J., Winckler, G., Hanley, J., Knudsen, C., Farmer, J. R., Lisiecki, L. E., and Lamy, F.: Benthic foraminiferal δ18O alignments for IODP Site U1541, ODP Site 1090 and ODP Site 980-981 based on different tuning targets for the past ∼3.5 Myr, PANGAEA [data set], https://doi.org/10.1594/PANGAEA.965845, 2024.
Oppo, D. W., McManus, J. F., and Cullen, J. L.: Abrupt climate events 500,000 to 340,000 years ago: Evidence from subpolar North Atlnatic sediments, Science, 278, 1335–1338, 1998.
Paillard, D., Labeyrie, L., and Yiou, P.: Analyseries 1.0: a Macintosh software for the analysis of geographical time-series, Eos, 77, p. 379, 1996.
Pisias, N. G., Martinson, D. G., Moore, T. C., Shackleton, N. J., Prell, W., Hays, J., and Boden, G.: High resolution stratigraphic correlation of benthic oxygen isotopic records spanning the last 300,000 years, Mar. Geol., 56, 119–136, 1984.
Ravelo, A. C., Andreasen, D. H., Lyle, M., Lyle, A. O., and Wara, M. W.: Regional climate shifts caused by gradual global cooling in the Pliocene epoch, Nature, 429, 263–267, https://doi.org/10.1038/nature02567, 2004.
Raymo, M. E., Ruddiman, W. F., Backman, J., Clement, B. M., and Martinson, D. G.: Late Pliocene variation in Northern Hemisphere ice sheets and North Atlantic deep water circulation, Paleoceanography, 4, 413–446, 1989.
Raymo, M. E., Ruddiman, W. F., Shackleton, N. J., and Oppo, D. W.: Evolution of Atlantic-Pacific δ13C gradients over the last 2.5 M.y., Earth Planet. Sc. Lett., 97, 353–368, 1990.
Raymo, M. E., Oppo, D. W., Flower, B. P., Hodell, D. A., McManus, J. F., Venz, K. A., Kleiven, K. F., and McIntyre, K.: Stability of North Atlantic water masses in face of pronounced climate variability during the Pleistocene, Paleoceanography, 19, PA2008, https://doi.org/10.1029/2003PA000921, 2004.
Ruddiman, W. F., Raymo, M. E., Martinson, D. G., Clement, B. M., and Backman, J.: Pleistocene evolution: Northern hemisphere ice sheets and North Atlantic Ocean, Paleoceanography, 4, 353–412, https://doi.org/10.1029/PA004i004p00353, 1989.
Shackleton, N. J.: Attainment of isotopic equilibrium between ocean water and benthonic foraminifera genus Uvigerina: isotopic changes in the ocean during the last glacial, Les méthodes quantitatives d'étude des variations du climat au cours du Pleistocène, Gif-sur-Yvette, Colloque international du CNRS, 219, 203–210, 1974.
Shackleton, N. J. and Opdyke, N. D.: Oxygen isotope paleomagnetic stratigraphy of Equatorial Pacific core V28-238: Oxygen isotope temperatures and ice volumes on a 105 year and 106 year scale, Quat. Res., 3, 39–55, 1973.
Shackleton, N. J. and Hall, M. A.: Oxygen and carbon isotope stratigraphy of DSDP Hole 552A: Plio-Pleistocene glacial history, Initial Reports of the Deep Sea Drilling Project, 81, 599–609, 1984.
Shackleton, N. J., Berger, A., and Peltier, W. R.: An alternative astronomical calibration of the lower Pleistocene timescale based on ODP Site 677, Earth and Environmental Science Transactions of The Royal Society of Edinburgh, 81, 251–261, https://doi.org/10.1017/S0263593300020782, 1990.
Shackleton, N. J., Crowhurst, S., Hagelberg, T., Pisias, N. G., and Schneider, D. A.: A new late Neogene time scale: Application to Leg 138 sites, Proceedings of the Ocean Drilling Program Scientific Results, 138, 73–101, 1995.
Skinner, L. C. and Shackleton, N. J.: Rapid transient changes in northeast Atlantic deep water ventilation age across Termination I, Paleoceanography, 19, PA2005, https://doi.org/10.1029/2003PA000983, 2004.
Skinner, L. C. and Shackleton, N. J.: An Atlantic lead over Pacific deep-water change across Termination I: Implications for the application of the marine isotope stage stratigraphy, Quaternary Sci. Rev., 24, 571–580, https://doi.org/10.1016/j.quascirev.2004.11.008, 2005.
Stein, M., Wasserburg, G. J., Aharon, P., Chen, J. H., Zhu, Z. R., Bloom, A., and Chappell, J.: TIMS U-series dating and stable isotopes of the last interglacial event in Papua New Guinea, Geochim. Cosmochim. Ac., 57, 2541–2554, 1993.
Stern, J. V. and Lisiecki, L. E.: Termination 1 timing in radiocarbon-dated regional benthic δ18O stacks, Paleoceanography, 29, 1127–1142, https://doi.org/10.1002/2014PA002700, 2014.
Suman, D. O. and Bacon, M. P.: Variations in Holocene sedimentation in the North American Basin determined from 230Th measurements, Deep-Sea Res., 36, 869–878, 1989.
Thompson, W. G. and Goldstein, S. L.: A radiometric calibration of the SPECMAP timescale, Quaternary Sci. Rev., 25, 3207–3215, https://doi.org/10.1016/j.quascirev.2006.02.007, 2006.
Tiedemann, R. and Franz, S. O.: Deepwater circulation, chemistry, and terrigenous sediment supply in the equatorial Atlantic during the Pliocene, 3.3–2.6 Ma and 5–4.5 Ma, Proceedings of the Ocean Drilling Program, Scientific Results, 154, 299–318, 1997.
Ullermann, J., Lamy, F., Ninnemann, U., Lembke-Jene, L., Gersonde, R., and Tiedemann, R.: Pacific-Atlantic Circumpolar Deep Water coupling during the last 500 ka, Paleoceanography, 31, 639–650, https://doi.org/10.1002/2016PA002932, 2016.
Venz, K. A. and Hodell, D. A.: New evidence for changes in Plio-Pleistocene deep water circulation from Southern Ocean ODP Leg 177 Site 1090, Paleogeogr. Paleocl., 182, 197–220, 2002.
Waelbroeck, C., Skinner, L. C., Labeyrie, L., Duplessy, J. C., Michel, E., Vazquez Riveiros, N., Gherardi, J. M., and Dewilde, F.: The timing of deglacial circulation changes in the Atlantic, Paleoceanography, 26, PA3213, https://doi.org/10.1029/2010PA002007, 2011.
Westerhold, T., Marwan, N., Drury, A. J., Liebrand, D., Agnini, C., Anagnostou, E., Barnet, J. S. K., Bohaty, S. M., De Vleeschouwer, D., Florindo, F., Frederichs, T., Hodell, D. A., Holbourn, A. E., Kroon, D., Lauretano, V., Littler, K., Lourens, L. J., Lyle, M., Pälike, H., Röhl, U., Tian, J., Wilkens, R. H., Wilson, P. A., and Zachos, J. C.: An astronomically dated record of Earth's climate and its predictability over the last 66 million years, Science, 369, 1383–1388, https://doi.org/10.1126/SCIENCE.ABA6853, 2020.
Wilkens, R. H., Westerhold, T., Drury, A. J., Lyle, M., Gorgas, T., and Tian, J.: Revisiting the Ceara Rise, equatorial Atlantic Ocean: isotope stratigraphy of ODP Leg 154 from 0 to 5 Ma, Clim. Past, 13, 779–793, https://doi.org/10.5194/cp-13-779-2017, 2017.
Winckler, G., Lamy, F., Alvarez Zarikian, C. A., Arz, H. W., Basak, C., Brombacher, A., Esper, O. M., Farmer, J. R., Gottschalk, J., Herbert, L. C., Iwasaki, S., Lawson, V. J., Lembke-Jene, L., Lo, L., Malinverno, E., Michel, E., Middleton, J. L., Moretti, S., Moy, C. M., Ravelo, A. C., Riesselman, C. R., Saavedra-Pellitero, M., Seo, I., Singh, R. K., Smith, R. A., Souza, A. L., Stoner, J. S., Venancio, I. M., Wan, S., Zhao, X., and Foucher McColl, N.: Site U1541 in Dynamics of the Pacific Antarctic Circumpolar Current, in: Proceedings of the International Ocean Discovery Program, vol. 383, edited by: Lamy, F., Winckler, G., Alvarez Zarikian, C. A., and Expedition 383 Scientists, International Ocean Discovery Program, College Station, TX, https://doi.org/10.14379/iodp.proc.383.105.2021, 2021.
Short summary
We present oxygen isotope data for a new sediment core from the South Pacific and assign ages to our record by aligning distinct patterns in observed oxygen isotope changes to independently dated target records with the same patterns. We examine the age uncertainties associated with this approach caused by human vs. automated alignment and the sensitivity of outcomes to the choice of alignment target. These efforts help us understand the timing of past climate changes.
We present oxygen isotope data for a new sediment core from the South Pacific and assign ages to...
