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Precessional pacing of tropical ocean carbon export during the Late Cretaceous

Kim, Ji-Eun, Westerhold, Thomas, Alegret, Laia, Drury, Anna Joy, Röhl, Ursula, Griffith, Elizabeth M.·2022·Climate of the Past
DOI 10.5194/cp-18-2631-2022

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Abstract

The marine biological carbon pump, which exports organic carbon out of the surface ocean, plays an essential role in sequestering carbon from the atmosphere, thus impacting climate and affecting marine ecosystems. Orbital variations in solar insolation modulate these processes, but their influence on the tropical Pacific during the Late Cretaceous is unknown. Here we present a high-resolution composite record of elemental barium from deep-sea sediments as a proxy for organic carbon export out of the surface oceans (i.e., export production) from Shatsky Rise in the tropical Pacific. Variations in export production in the Pacific during the Maastrichtian, from 71.5 to 66 million years ago, were dominated by precession and less so by eccentricity modulation or obliquity, confirming that tropical surface-ocean carbon dynamics were influenced by seasonal insolation in the tropics during this greenhouse period. We suggest that precession paced primary production in the tropical Pacific and recycling in the euphotic zone by changing water column stratification, upwelling intensity, and continental nutrient fluxes. Benthic foraminiferal accumulation rates covaried with export production, providing evidence for bentho-pelagic coupling of the marine biological carbon pump across these high-frequency changes in a cool greenhouse planet.

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Figure 1 Location of ODP Leg 198 Sites 1209 and 1210 at Shatsky Rise at 69 Ma (star) in the tropical Pacific (Scotese and Wright, 2018). Deccan and Ninetyeast Ridge are shown as red triangles. Location of Zumaia (Batenburg et al., 2012, 2014) and Blake Nose (MacLeod et al., 2001) records are shown as black circles. Shading indicates land above 0 m (brown); land above 6 km (white); and ocean settings with water depths greater than 4 km (dark blue), between 4 km and 120 m (blue), and above 120 m (green).
Figure 1 Location of ODP Leg 198 Sites 1209 and 1210 at Shatsky Rise at 69 Ma (star) in the tropical Pacific (Scotese and Wright, 2018). Deccan and Ninetyeast Ridge are shown as red triangles. Location of Zumaia (Batenburg et al., 2012, 2014) and Blake Nose (MacLeod et al., 2001) records are shown as black circles. Shading indicates land above 0 m (brown); land above 6 km (white); and ocean settings with water depths greater than 4 km (dark blue), between 4 km and 120 m (blue), and above 120 m (green).CC-BY · From the PDF
Figure 2 (a) Bulk carbonate 13 C by depth (m) shown with 250-point LOESS smoothing and wavelet analysis (Torrence and Compo, 1998; Grinsted et al., 2004) and the multi-taper method (MTM) shown for spectral analysis. (b) 13 C by age (Ma) shown with 250-point LOESS smoothing and wavelet analysis and MTM shown for spectral analysis. CL indicates confidence level. Note age is increasing from the left to right.
Figure 2 (a) Bulk carbonate 13 C by depth (m) shown with 250-point LOESS smoothing and wavelet analysis (Torrence and Compo, 1998; Grinsted et al., 2004) and the multi-taper method (MTM) shown for spectral analysis. (b) 13 C by age (Ma) shown with 250-point LOESS smoothing and wavelet analysis and MTM shown for spectral analysis. CL indicates confidence level. Note age is increasing from the left to right.CC-BY · From the PDF
Figure 3 (a) Basic 405 kyr age model was first made by assigning Shatsky Rise Sites 1209 and 1210 composite bulk 13 C to known tie points (red numbers). Then, a 5 m filter (bandpass 0 : 2 0 : 06) of bulk 13 C composite was modeled to know the cosine function (cyan line). This cosine function was correlated to the La2004 cosine function (Laskar et al., 2004; blue line) minima for tuning the depth to the stable 405 kyr cycle for an age. New age is tie points in Table S4. (b) Sedimentation rate in meters per million years (mMyr 1 ) of composite depth (rmcd).
Figure 3 (a) Basic 405 kyr age model was first made by assigning Shatsky Rise Sites 1209 and 1210 composite bulk 13 C to known tie points (red numbers). Then, a 5 m filter (bandpass 0 : 2 0 : 06) of bulk 13 C composite was modeled to know the cosine function (cyan line). This cosine function was correlated to the La2004 cosine function (Laskar et al., 2004; blue line) minima for tuning the depth to the stable 405 kyr cycle for an age. New age is tie points in Table S4. (b) Sedimentation rate in meters per million years (mMyr 1 ) of composite depth (rmcd).CC-BY · From the PDF
Figure 4 Pelagic marine barite weight percent (wt %), (a, b) excess Ba (ppm), and (c) XRF Ba (total counts) compared to each other. All correlations between barite-related proxies are significant ( p < 0 : 001).
Figure 4 Pelagic marine barite weight percent (wt %), (a, b) excess Ba (ppm), and (c) XRF Ba (total counts) compared to each other. All correlations between barite-related proxies are significant ( p < 0 : 001).CC-BY · From the PDF
Figure 5 Bulk carbonate 13 C, 18 O, scanning XRF Ba, and wavelet analysis (Torrence and Compo, 1998; Grinsted et al., 2004) on nonstationary periodicities for XRF Ba (500 LOESS composite of Sites 1209 and 1210) show signals of precession in scanning XRF Ba which strengthen after Deccan volcanism begins. Brighter colors correspond to higher power within a corresponding frequency period (in thousands of years, kyr). Ninetyeast hotspot volcanism and approximate duration of Deccan volcanism shown, adapted from Keller et al. (2016). EMCP: early Maastrichtian cooling pulse (Haynes et al., 2020); MME : mid-Maastrichtian event beginning at Chron C31n and lasting 500 kyr (Voigt et al., 2012); LMWE: latest Maastrichtian warming event (Li and Keller, 1998).
Figure 5 Bulk carbonate 13 C, 18 O, scanning XRF Ba, and wavelet analysis (Torrence and Compo, 1998; Grinsted et al., 2004) on nonstationary periodicities for XRF Ba (500 LOESS composite of Sites 1209 and 1210) show signals of precession in scanning XRF Ba which strengthen after Deccan volcanism begins. Brighter colors correspond to higher power within a corresponding frequency period (in thousands of years, kyr). Ninetyeast hotspot volcanism and approximate duration of Deccan volcanism shown, adapted from Keller et al. (2016). EMCP: early Maastrichtian cooling pulse (Haynes et al., 2020); MME : mid-Maastrichtian event beginning at Chron C31n and lasting 500 kyr (Voigt et al., 2012); LMWE: latest Maastrichtian warming event (Li and Keller, 1998).CC-BY · From the PDF
Figure 6 Two discrete sample intervals covering potential cycles of precession ( 21 kyr) with surface-water-related proxies (bulk 13 C, 18 O), organic carbon export proxies (scanning XRF Ba: crosses; excess-BaAR: open diamonds; and BAR: solid diamonds), and proxy for organic carbon arrival at the seafloor (BFAR: green diamonds). A positive correspondence is seen between carbon export from the surface of the oceans (XRF Ba, excess-BaAR, BAR) and organic carbon arrival at the seafloor (BFAR).
Figure 6 Two discrete sample intervals covering potential cycles of precession ( 21 kyr) with surface-water-related proxies (bulk 13 C, 18 O), organic carbon export proxies (scanning XRF Ba: crosses; excess-BaAR: open diamonds; and BAR: solid diamonds), and proxy for organic carbon arrival at the seafloor (BFAR: green diamonds). A positive correspondence is seen between carbon export from the surface of the oceans (XRF Ba, excess-BaAR, BAR) and organic carbon arrival at the seafloor (BFAR).CC-BY · From the PDF
Figure 7 Cycles of enhanced and reduced carbon (C) export and sequestration result from precessional paced variations in primary productivity and recycling in surface waters (i.e., changes in the efficiency of the biological pump). A shallower thermocline (steeper boundary between light- and dark-blue waters) would result in increased primary production and reduced recycling in the surface waters due to changes in water column stratification, continental nutrient fluxes, and upwelling intensity which increases nutrients (solid blue arrow) and enhances C export out of the surface waters (wide green arrow). A deeper thermocline (near horizontal boundary between light- and dark-blue waters) would result in reduced primary production and enhanced recycling in the surface waters due to reduced nutrient availability (dashed blue arrow) and reduces C export out of the surface waters (thin green arrow). This ENSOlike variability could have controlled carbon export in the Maastrichtian.
Figure 7 Cycles of enhanced and reduced carbon (C) export and sequestration result from precessional paced variations in primary productivity and recycling in surface waters (i.e., changes in the efficiency of the biological pump). A shallower thermocline (steeper boundary between light- and dark-blue waters) would result in increased primary production and reduced recycling in the surface waters due to changes in water column stratification, continental nutrient fluxes, and upwelling intensity which increases nutrients (solid blue arrow) and enhances C export out of the surface waters (wide green arrow). A deeper thermocline (near horizontal boundary between light- and dark-blue waters) would result in reduced primary production and enhanced recycling in the surface waters due to reduced nutrient availability (dashed blue arrow) and reduces C export out of the surface waters (thin green arrow). This ENSOlike variability could have controlled carbon export in the Maastrichtian.CC-BY · From the PDF

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Research works printed but not linked: 67

  1. Alegret, L. and Thomas, E.: Food supply to the seafloor in the Pacific Ocean after the Cretaceous/Paleogene boundary event, Mar. Micropaleontol., 73, 105–116, 10.1016/j.marmicro.2009.07.005, 2009. · DOI
  2. Alegret, L., Thomas, E., and Lohmann, K. C.: End-Cretaceous marine mass extinction not caused by productivity collapse, P. Natl. Acad. Sci. USA, 109, 728–732, 10.1073/pnas.1110601109, 2012. · DOI
  3. Alegret, L., Arreguín-Rodríguez, G. J., Trasviña-Moreno, C. A., and Thomas, E.: Turnover and stability in the deep sea: Benthic foraminifera as tracers of Paleogene global change, Global Planet. Change, 196, 103372, 10.1016/j.gloplacha.2020.103372, 2020. · DOI
  4. Barnet, J. S., Littler, K., Kroon, D., Leng, M. J., Westerhold, T., Röhl, U., and Zachos, J. C.: A new high-resolution chronology for the Late Maastrichtian warming event: Establishing robust temporal links with the onset of Deccan volcanism, Geology, 46, 147–150, 2018. · DOI · Paper page
  5. Barnet, J. S., Littler, K., Westerhold, T., Kroon, D., Leng, M. J., Bailey, I., Röhl, U., and Zachos, J. C.: A high-fidelity benthic stable isotope record of Late Cretaceous–Early Eocene climate change and carbon-cycling, Paleoceanography and Paleoclimatology, 34, 672–691, 2019. · DOI
  6. Batenburg, S. J., Sprovieri, M., Gale, A. S., Hilgen, F. J., Hüsing, S., Laskar, J., Liebrand, D., Lirer, F., Orue-Etxebarria, X., and Pelosi, N.: Cyclostratigraphy and astronomical tuning of the Late Maastrichtian at Zumaia (Basque country, Northern Spain), Earth Planet. Sc. Lett., 359, 264–278, 2012. · DOI · Paper page
  7. Batenburg, S. J., Gale, A. S., Sprovieri, M., Hilgen, F. J., Thibault, N., Boussaha, M., and Orue-Etxebarria, X.: An astronomical time scale for the Maastrichtian based on the Zumaia and Sopelana sections (Basque country, northern Spain), J. Geol. Soc., 171, 165–180, 2014. · DOI
  8. Beaufort, L., Bolton, C. T., Sarr, A.-C., Suchéras-Marx, B., Rosenthal, Y., Donnadieu, Y., Barbarin, N., Bova, S., Cornuault, P., Gally, Y., Gray, E., Mazur, J.-C., and Tetard, M.: Cyclic evolution of phytoplankton forced by changes in tropical seasonality, Nature, 601, 79–84, 10.1038/s41586-021-04195-7, 2022. · DOI
  9. Bralower, T., Premoli Silva, I., and Malone, M.: Leg 198, Proceedings of the Ocean Drilling Program: Initial Reports, College Station, TX (Ocean Drilling Program), 10.2973/odp.proc.ir.198.2002, 2002. · DOI
  10. Chenet, A.-L., Quidelleur, X., Fluteau, F., Courtillot, V., and Bajpai, S.: 40K–40Ar dating of the Main Deccan large igneous province: Further evidence of KTB age and short duration, Earth Planet. Sc. Lett., 263, 1–15, 2007. · DOI · Paper page
  11. Clement, A. C., Seager, R., and Cane, M. A.: Orbital controls on the El Niño/Southern Oscillation and the tropical climate, Paleoceanography, 14, 441–456, 10.1029/1999PA900013, 1999. · DOI
  12. Clement, A. C., Seager, R., and Cane, M. A.: Suppression of El Niño during the mid-Holocene by changes in the Earth's orbit, Paleoceanography, 15, 731–737, 10.1029/1999PA000466, 2000. · DOI · Paper page
  13. Clement, A. C., Hall, A., and Broccoli, A. J.: The importance of precessional signals in the tropical climate, Clim. Dynam., 22, 327–341, 10.1007/s00382-003-0375-8, 2004. · DOI
  14. Crowley, T. J., Kim, K.-Y., Mengel, J. G., and Short, D. A.: Modeling 100,000-Year Climate Fluctuations in Pre-Pleistocene Time Series, Science, 255, 705–707, 1992. · DOI
  15. Dameron, S. N., Leckie, R. M., Clark, K., MacLeod, K. G., Thomas, D. J., and Lees, J. A.: Extinction, dissolution, and possible ocean acidification prior to the Cretaceous/Paleogene (K/Pg) boundary in the tropical Pacific, Palaeogeogr. Palaeocl., 485, 433–454, 2017. · DOI
  16. Davies, A., Kemp, A. E. S., Weedon, G. P., and Barron, J. A.: El Niño–Southern Oscillation variability from the Late Cretaceous Marca Shale of California, Geology, 40, 15–18, 10.1130/G32329.1, 2012. · DOI
  17. Dymond, J., Suess, E., and Lyle, M.: Barium in deep-sea sediment: A geochemical proxy for paleoproductivity, Paleoceanography, 7, 163–181, 1992. · DOI
  18. Eagle, M., Paytan, A., Arrigo, K. R., van Dijken, G., and Murray, R. W.: A comparison between excess barium and barite as indicators of carbon export, Paleoceanography, 18, 1021, 10.1029/2002PA000793, 2003. · DOI
  19. Fedorov, A. V., Dekens, P. S., McCarthy, M., Ravelo, A. C., deMenocal, P. B., Barreiro, M., Pacanowski, R. C., and Philander, S. G.: The Pliocene Paradox (Mechanisms for a Permanent El Niño), Science, 312, 1485–1489, 10.1126/science.1122666, 2006. · DOI
  20. Forster, A., Schouten, S., Baas, M., and Sinninghe Damsté, J. S.: Mid-Cretaceous (Albian–Santonian) sea surface temperature record of the tropical Atlantic Ocean, Geology, 35, 919–922, 2007. · DOI
  21. Frank, T. D., Thomas, D. J., Leckie, R. M., Arthur, M. A., Bown, P. R., Jones, K., and Lees, J. A.: The Maastrichtian record from Shatsky Rise (northwest Pacific): A tropical perspective on global ecological and oceanographic changes, Paleoceanography, 20, PA1008, 10.1029/2004PA001052, 2005. · DOI
  22. Friedrich, O., Norris, R. D., and Erbacher, J.: Evolution of middle to Late Cretaceous oceans – A 55 m.y. record of Earth's temperature and carbon cycle, Geology, 40, 107–110, 10.1130/g32701.1, 2012. · DOI
  23. Gilabert, V., Arz, J. A., Arenillas, I., Robinson, S. A., and Ferrer, D.: Influence of the Latest Maastrichtian Warming Event on planktic foraminiferal assemblages and ocean carbonate saturation at Caravaca, Spain, Cretaceous Res., 125, 104844, 10.1016/j.cretres.2021.104844, 2021. · DOI
  24. Gonneea, M. E. and Paytan, A.: Phase associations of barium in marine sediments, Mar. Chem., 100, 124–135, 2006. · DOI
  25. Griffith, E. M., Thomas, E., Lewis, A. R., Penman, D. E., Westerhold, T., and Winguth, A. M.: Bentho-Pelagic Decoupling: The Marine Biological Carbon Pump During Eocene Hyperthermals, Paleoceanography and Paleoclimatology, 36, e2020PA004053, 10.1029/2020PA004053, 2021. · DOI
  26. Grinsted, A., Moore, J. C., and Jevrejeva, S.: Application of the cross wavelet transform and wavelet coherence to geophysical time series, Nonlin. Processes Geophys., 11, 561–566, 10.5194/npg-11-561-2004, 2004. · DOI · Paper page
  27. Haynes, S. J., MacLeod, K. G., Ladant, J.-B., Guchte, A. V., Rostami, M. A., Poulsen, C. J., and Martin, E. E.: Constraining sources and relative flow rates of bottom waters in the Late Cretaceous Pacific Ocean, Geology, 48, 509–513, 2020. · DOI
  28. Herbert, T. D. and D'Hondt, S. L.: Precessional climate cyclicity in Late Cretaceous – Early Tertiary marine sediments: a high resolution chronometer of Cretaceous-Tertiary boundary events, Earth Planet. Sc. Lett., 99, 263–275, 10.1016/0012-821X(90)90115-E, 1990. · DOI
  29. Herbert, T. D., Gee, J., and DiDonna, S.: Precessional cycles in the Upper Cretaceous pelagic sediments of the South Atlantic: Long-term patterns from high-frequency climate variations, Geological Society of America, Special Papers, 105–120, 1999. · DOI
  30. Huber, B. T., MacLeod, K. G., Watkins, D. K., and Coffin, M. F.: The rise and fall of the Cretaceous Hot Greenhouse climate, Global Planet. Change, 167, 1–23, 2018. · DOI
  31. Jenkyns, H., Gale, A., and Corfield, R.: Carbon-and oxygen-isotope stratigraphy of the English Chalk and Italian Scaglia and its palaeoclimatic significance, Geol. Mag., 131, 1–34, 10.1017/S0016756800010451, 1994. · DOI
  32. Jorissen, F. J., Fontanier, C., and Thomas, E.: Chapter Seven Paleoceanographical Proxies Based on Deep-Sea Benthic Foraminiferal Assemblage Characteristics, Developments in Marine Geology, 1, 263–325, 10.1016/S1572-5480(07)01012-3, 2007. · DOI
  33. Jung, C., Voigt, S., and Friedrich, O.: High-resolution carbon-isotope stratigraphy across the Campanian–Maastrichtian boundary at Shatsky Rise (tropical Pacific), Cretaceous Res., 37, 177–185, 2012. · DOI
  34. Jung, C., Voigt, S., Friedrich, O., Koch, M. C., and Frank, M.: Campanian-Maastrichtian ocean circulation in the tropical Pacific, Paleoceanogr. Paleocl., 28, 562–573, 2013. · DOI
  35. Keller, G., Punekar, J., and Mateo, P.: Upheavals during the Late Maastrichtian: Volcanism, climate and faunal events preceding the end-Cretaceous mass extinction, Palaeogeogr. Palaeocl., 441, 137–151, 2016. · DOI
  36. Kim, H. J., Kim, T., Hyeong, K., Yeh, S., Park, J., Yoo, C. M., and Hwang, J.: Suppressed CO2 outgassing by an enhanced biological pump in the Eastern Tropical Pacific, J. Geophys. Res.-Oceans, 124, 7962–7973, 2019. · DOI
  37. Laepple, T. and Lohmann, G.: Seasonal cycle as template for climate variability on astronomical timescales, Paleoceanography, 24, PA4201, 10.1029/2008PA001674, 2009. · DOI
  38. Larson, R., Steiner, M., Erba, E., and Lancelot, Y.: Paleolatitudes and tectonic reconstructions of the oldest portion of the Pacific plate: A comparative study, edited by: Larson, R. L., Lancelot, Y., Fisher, A., and Winterer, E. L., Proceedings of the Ocean Drilling Program, Scientific Results, Leg 129, 615–631, 1992. · DOI
  39. Laskar, J.: Chapter 4 – Astrochronology, in: Geologic Time Scale 2020, edited by: Gradstein, F. M., Ogg, J. G., Schmitz, M. D., and Ogg, G. M., Elsevier, 139–158, 10.1016/B978-0-12-824360-2.00004-8, 2020. · DOI
  40. Laskar, J., Robutel, P., Joutel, F., Gastineau, M., Correia, A., and Levrard, B.: A long-term numerical solution for the insolation quantities of the Earth, Astron. Astrophys., 428, 261–285, 2004. · DOI · Paper page
  41. Laskar, J., Fienga, A., Gastineau, M., and Manche, H.: La2010: a new orbital solution for the long-term motion of the Earth, Astron. Astrophys., 532, A89, 10.1051/0004-6361/201116836, 2011. · DOI
  42. Li, L. and Keller, G.: Abrupt deep-sea warming at the end of the Cretaceous, Geology, 26, 995–998, 1998. · DOI
  43. Li, M., Hinnov, L. A., and Kump, L.: Acycle: Time-series analysis software for paleoclimate research and education, Comput. Geosci., 127, 12–21, 2019. · DOI
  44. Lu, Z., Liu, Z., Chen, G., and Guan, J.: Prominent precession band variance in ENSO intensity over the last 300,000 years, Geophys. Res. Lett., 46, 9786–9795, 10.1029/2019GL083410, 2019. · DOI
  45. Lyle, M., Dadey, K. A., and Farrell, J. W.: The Late Miocene (11–8 Ma) eastern Pacific carbonate crash: evidence for reorganization of deep-water circulation by the closure of the Panama Gateway, 1995 Proceedings of the Ocean Drilling Program, Scientific Results, 138, 821–837, 1995. · DOI
  46. MacLeod, K. G. and Huber, B. T.: Reorganization of deep ocean circulation accompanying a Late Cretaceous extinction event, Nature, 380, 422–425, 1996. · DOI
  47. MacLeod, K. G., Huber, B. T., Pletsch, T., Röhl, U., and Kucera, M.: Maastrichtian foraminiferal and paleoceanographic changes on Milankovitch timescales, Paleoceanography, 16, 133–154, 2001. · DOI
  48. Murray, J. W., Young, J., Newton, J., Dunne, J., Chapin, T., Paul, B., and McCarthy, J. J.: Export flux of particulate organic carbon from the central equatorial Pacific determined using a combined drifting trap-234Th approach, Deep-Sea Res. Pt. II, 43, 1095–1132, 1996. · DOI
  49. Murray, R. W., Knowlton, C., Leinen, M., Mix, A. C., and Polsky, C.: Export production and carbonate dissolution in the central equatorial Pacific Ocean over the past 1 Myr, Paleoceanography, 15, 570–592, 2000. · DOI
  50. Olivarez Lyle, A. and Lyle, M. W.: Missing organic carbon in Eocene marine sediments: Is metabolism the biological feedback that maintains end-member climates?, Paleoceanography, 21, PA2007, 10.1029/2005PA001230, 2006. · DOI
  51. Pälike, H., Norris, R. D., Herrle, J. O., Wilson, P. A., Coxall, H. K., Lear, C. H., Shackleton, N. J., Tripati, A. K., and Wade, B. S.: The heartbeat of the Oligocene climate system, Science, 314, 1894–1898, 10.1126/science.1133822, 2006. · DOI
  52. Paytan, A., Kastner, M., and Chavez, F.: Glacial to interglacial fluctuations in productivity in the equatorial Pacific as indicated by marine barite, Science, 274, 1355–1357, 1996. · DOI
  53. Pena, L. D., Cacho, I., Ferretti, P., and Hall, M. A.: El Niño–Southern Oscillation–like variability during glacial terminations and interlatitudinal teleconnections, Paleoceanography, 23, PA3101, 10.1029/2008PA001620, 2008. · DOI
  54. Reitz, A., Pfeifer, K., De Lange, G., and Klump, J.: Biogenic barium and the detrital Ba/Al ratio: a comparison of their direct and indirect determination, Mar. Geol., 204, 289–300, 2004. · DOI
  55. Renne, P. R., Deino, A. L., Hilgen, F. J., Kuiper, K. F., Mark, D. F., Mitchell, W. S., Morgan, L. E., Mundil, R., and Smit, J.: Time scales of critical events around the Cretaceous-Paleogene boundary, Science, 339, 684–687, 2013. · DOI · Paper page
  56. Sager, W. W., Kim, J., Klaus, A., Nakanishi, M., and Khankishieva, L. M.: Bathymetry of Shatsky Rise, northwest Pacific Ocean: Implications for ocean plateau development at a triple junction, J. Geophys. Res.-Sol. Ea., 104, 7557–7576, 1999. · DOI
  57. Scudder, R. P., Murray, R. W., Schindlbeck, J. C., Kutterolf, S., Hauff, F., and McKinley, C. C.: Regional-scale input of dispersed and discrete volcanic ash to the Izu-Bonin and Mariana subduction zones, Geochem. Geophy. Geosy., 15, 4369–4379, 2014. · DOI
  58. Short, D. A., Mengel, J. G., Crowley, T. J., Hyde, W. T., and North, G. R.: Filtering of Milankovitch cycles by Earth's geography, Quaternary Res., 35, 157–173, 1991. · DOI
  59. Torrence, C. and Compo, G. P.: A Practical Guide to Wavelet Analysis, B. Am. Meteorol. Soc., 79, 61–78, 1998. · DOI
  60. Trenberth, K. E., Stepaniak, D. P., and Caron, J. M.: The global monsoon as seen through the divergent atmospheric circulation, J. Climate, 13, 3969–3993, 2000. · DOI
  61. Turk, D., McPhaden, M. J., Busalacchi, A. J., and Lewis, M. R.: Remotely sensed biological production in the Equatorial Pacific, Science, 293, 471–474, 2001. · DOI
  62. Voigt, S., Gale, A. S., Jung, C., and Jenkyns, H. C.: Global correlation of Upper Campanian - Maastrichtian successions using carbon-isotope stratigraphy: development of a new Maastrichtian timescale, Newsl. Stratigr., 45, 25–53, 2012. · DOI
  63. Wara, M. W., Ravelo, A. C., and Delaney, M. L.: Permanent El Niño-like conditions during the Pliocene warm period, Science, 309, 758–761, 2005. · DOI
  64. Westerhold, T., Marwan, N., Drury, A. J., Liebrand, D., Agnini, C., Anagnostou, E., Barnet, J. S., Bohaty, S. M., De Vleeschouwer, D., and Florindo, F.: An astronomically dated record of Earth's climate and its predictability over the last 66 million years, Science, 369, 1383–1387, 2020. · DOI · Paper page
  65. Zachos, J., Pagani, M., Sloan, L., Thomas, E., and Billups, K.: Trends, rhythms, and aberrations in global climate 65 Ma to present, Science, 292, 686–693, 2001. · DOI · Paper page
  66. Zeebe, R. E., Westerhold, T., Littler, K., and Zachos, J. C.: Orbital forcing of the Paleocene and Eocene carbon cycle, Paleoceanography, 32, 440–465, 2017. · DOI
  67. Zhang, S., Yu, Z., Gong, X., Wang, Y., Chang, F., Lohmman, G., Qi, Y., and Li, T.: Precession cycles of the El Niño/Southern oscillation-like system controlled by Pacific upper-ocean stratification, Communications Earth & Environment, 2, 239, 10.1038/s43247-021-00305-5, 2021. · DOI

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Metadata

Authors
Kim, J.-E., Westerhold, T., Alegret, L., Drury, A. J., Röhl, U., & Griffith, E. M.
ORCID
Venue
Climate of the Past
Publisher
Copernicus GmbH
Published
2022-12-16
Volume
18
Issue
12
Pages
2631-2641
ISSN
1814-9332
DOI
10.5194/cp-18-2631-2022
Cited by
4
References
0
Language
en
Licence
creativecommons.org/licenses/by/4.0/ (vor)
Funders
  • Deutsche Forschungsgemeinschaft (320221997, 390741603)
  • Ministerio de Economía y Competitividad (PID2019-105537RB-I00)
  • National Science Foundation (OCE-1536630)

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

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How to cite

Cite CoChat for the checks on this page, and the paper for its own findings.

This page
CoChat. (2026). Citation check: Precessional pacing of tropical ocean carbon export during the Late Cretaceous. https://app.cochat.ai/papers/10.5194/cp-18-2631-2022
The paper
Kim, J.-E., Westerhold, T., Alegret, L., Drury, A. J., Röhl, U., & Griffith, E. M. (2022). Precessional pacing of tropical ocean carbon export during the Late Cretaceous. Climate of the Past. https://doi.org/10.5194/cp-18-2631-2022