Articles | Volume 20, issue 7
https://doi.org/10.5194/cp-20-1537-2024
© 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/cp-20-1537-2024
© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
23 Jul 2024
Research article |
| 23 Jul 2024
| 23 Jul 2024
Controls on Early Cretaceous South Atlantic Ocean circulation and carbon burial – a climate model–proxy synthesis
Sebastian Steinig
CORRESPONDING AUTHOR
GEOMAR Helmholtz Centre for Ocean Research Kiel, Kiel, Germany
present address: School of Geographical Sciences, University of Bristol, Bristol, UK
Wolf Dummann
Institute of Geology and Mineralogy, University of Cologne, Cologne, Germany
present address: Institute of Geosciences, Goethe University Frankfurt, Frankfurt am Main, Germany
Peter Hofmann
Institute of Geology and Mineralogy, University of Cologne, Cologne, Germany
Martin Frank
GEOMAR Helmholtz Centre for Ocean Research Kiel, Kiel, Germany
Wonsun Park
GEOMAR Helmholtz Centre for Ocean Research Kiel, Kiel, Germany
Center for Climate Physics, Institute for Basic Science (IBS), Busan, Republic of Korea
Department of Climate System, Pusan National University, Busan, Republic of Korea
Thomas Wagner
The Lyell Centre Global Research Institute, Heriot–Watt University, Edinburgh, UK
Sascha Flögel
GEOMAR Helmholtz Centre for Ocean Research Kiel, Kiel, Germany
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This study investigates the climatic mechanism that controlled the deposition of organic matter in the South Atlantic Cape Basin during the Early Cretaceous. The presented geochemical and climate modeling data suggest that fluctuations in riverine nutrient supply were the main driver of organic carbon burial on timescales < 1 Myr. Our results have implications for the understanding of Cretaceous atmospheric circulation patterns and climate-land-ocean interactions in emerging ocean basins.
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Elizabeth Atar, Christian März, Andrew C. Aplin, Olaf Dellwig, Liam G. Herringshaw, Violaine Lamoureux-Var, Melanie J. Leng, Bernhard Schnetger, and Thomas Wagner
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Kristin Doering, Claudia Ehlert, Philippe Martinez, Martin Frank, and Ralph Schneider
Biogeosciences, 16, 2163–2180, https://doi.org/10.5194/bg-16-2163-2019, https://doi.org/10.5194/bg-16-2163-2019, 2019
Bernd Wagner, Thomas Wilke, Alexander Francke, Christian Albrecht, Henrike Baumgarten, Adele Bertini, Nathalie Combourieu-Nebout, Aleksandra Cvetkoska, Michele D'Addabbo, Timme H. Donders, Kirstin Föller, Biagio Giaccio, Andon Grazhdani, Torsten Hauffe, Jens Holtvoeth, Sebastien Joannin, Elena Jovanovska, Janna Just, Katerina Kouli, Andreas Koutsodendris, Sebastian Krastel, Jack H. Lacey, Niklas Leicher, Melanie J. Leng, Zlatko Levkov, Katja Lindhorst, Alessia Masi, Anna M. Mercuri, Sebastien Nomade, Norbert Nowaczyk, Konstantinos Panagiotopoulos, Odile Peyron, Jane M. Reed, Eleonora Regattieri, Laura Sadori, Leonardo Sagnotti, Björn Stelbrink, Roberto Sulpizio, Slavica Tofilovska, Paola Torri, Hendrik Vogel, Thomas Wagner, Friederike Wagner-Cremer, George A. Wolff, Thomas Wonik, Giovanni Zanchetta, and Xiaosen S. Zhang
Biogeosciences, 14, 2033–2054, https://doi.org/10.5194/bg-14-2033-2017, https://doi.org/10.5194/bg-14-2033-2017, 2017
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Lake Ohrid is considered to be the oldest existing lake in Europe. Moreover, it has a very high degree of endemic biodiversity. During a drilling campaign at Lake Ohrid in 2013, a 569 m long sediment sequence was recovered from Lake Ohrid. The ongoing studies of this record provide first important information on the environmental and evolutionary history of the lake and the reasons for its high endimic biodiversity.
J. Holtvoeth, D. Rushworth, H. Copsey, A. Imeri, M. Cara, H. Vogel, T. Wagner, and G. A. Wolff
Biogeosciences, 13, 795–816, https://doi.org/10.5194/bg-13-795-2016, https://doi.org/10.5194/bg-13-795-2016, 2016
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Lake Ohrid is situated in the southern Balkans between Albania and Macedonia. It is a unique ecosystem with remarkable biodiversity and a sediment record of past climates that goes back more than a million years. Detailed reconstructions of past climate development and human alteration of the environment require underpinned and so in this study we go the present-day lake vegetation and catchment soils and test new proxies over one of the known recent cooling events of the region 8200 years ago.
J. Schönfeld, W. Kuhnt, Z. Erdem, S. Flögel, N. Glock, M. Aquit, M. Frank, and A. Holbourn
Biogeosciences, 12, 1169–1189, https://doi.org/10.5194/bg-12-1169-2015, https://doi.org/10.5194/bg-12-1169-2015, 2015
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Today’s oceans show distinct mid-depth oxygen minima while whole oceanic basins became transiently anoxic in the Mesozoic. To constrain past bottom-water oxygenation, we compared sediments from the Peruvian OMZ with the Cenomanian OAE 2 from Morocco. Corg accumulation rates in laminated OAE 2 sections match Holocene rates off Peru. Laminated deposits are found at oxygen levels of < 7µmol kg-1; crab burrows appear at 10µmol kg-1 today, both defining threshold values for palaeoreconstructions.
K. Lohmann, J. H. Jungclaus, D. Matei, J. Mignot, M. Menary, H. R. Langehaug, J. Ba, Y. Gao, O. H. Otterå, W. Park, and S. Lorenz
Ocean Sci., 10, 227–241, https://doi.org/10.5194/os-10-227-2014, https://doi.org/10.5194/os-10-227-2014, 2014
J. Raddatz, A. Rüggeberg, S. Flögel, E. C. Hathorne, V. Liebetrau, A. Eisenhauer, and W.-Chr. Dullo
Biogeosciences, 11, 1863–1871, https://doi.org/10.5194/bg-11-1863-2014, https://doi.org/10.5194/bg-11-1863-2014, 2014
Related subject area
Subject: Climate Modelling | Archive: Marine Archives | Timescale: Pre-Cenozoic
Palaeoclimatic oscillations in the Pliensbachian (Early Jurassic) of the Asturian Basin (Northern Spain)
Juan J. Gómez, María J. Comas-Rengifo, and Antonio Goy
Clim. Past, 12, 1199–1214, https://doi.org/10.5194/cp-12-1199-2016, https://doi.org/10.5194/cp-12-1199-2016, 2016
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One of the challenges is to elucidate if climate during the Jurassic was warmer than present day, with no ice caps. The Pliensbachian Cooling event (Lower Jurassic) has been pointed out as one of the main candidates to have developed ice caps. The Rodiles section of the Asturian Basin (Northern Spain), allows the characterization of several climatic changes of probable global extent.
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Short summary
The opening of the South Atlantic Ocean, starting ~ 140 million years ago, had the potential to influence the global carbon cycle and climate trends. We use 36 climate model experiments to simulate the evolution of ocean circulation in this narrow basin. We test different combinations of palaeogeographic and atmospheric CO2 reconstructions with geochemical data to not only quantify the influence of individual processes on ocean circulation but also to find nonlinear interactions between them.
The opening of the South Atlantic Ocean, starting ~ 140 million years ago, had the potential to...
