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Volcanic triggering of a biogeochemical cascade during Oceanic Anoxic Event 2

Nature Geoscience volume 3, pages 201–204 (2010)Cite this article

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Abstract

During the Cretaceous period (∼145–65 million years ago), there were several periods of global ocean anoxia, each lasting less than one million years. These events, known as ocean anoxic events, were marked by significant increases in organic carbon burial1, and are generally attributed to increased primary productivity in surface waters2. The details underpinning the initiation, maintenance and termination of these events, however, remain equivocal. Here we present sulphur isotope data spanning the Ocean Anoxic Event 2 (about 94.5 million years ago) from sedimentary rocks in Colorado that were formed in the Western Interior Seaway; this seaway ran north–south, splitting North America during the Cretaceous. Sulphate levels increased rapidly from relatively low background levels at the onset of the event, most likely from the release of sulphur by massive volcanism, and fell during the anoxic event. We infer that the input of sulphate facilitated increased carbon remineralization, which enhanced nutrient recycling and increased global primary productivity, eventually resulting in widespread ocean anoxia. Our scenario indicates that Ocean Anoxic Event 2 may have persisted until sulphate levels were stabilized by the formation and burial of the sulphur mineral pyrite, which returned primary productivity to background levels. We suggest that fluctuations in sulphate levels may have regulated the marine carbon cycle during past periods of low oceanic sulphate concentration.

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Figure 1: Stratigraphic column, geochemical results and chronology for United States Geological Survey No. 1 Portland core.
Figure 2: Modelled δ34Ssulphate and sulphate concentration response to increased volcanism and pyrite burial under varying initial sulphate concentrations.

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References

  1. Schlanger, S. O. & Jenkyns, H. C. Cretaceous anoxic events: Causes and consequences. Geol. Mijnb. 55, 179–184 (1976).

    Google Scholar 

  2. Kuypers, M. M. M., Pancost, R. D., Nijenhuis, I. A. & Damste, J. S. S. Enhanced productivity led to increased organic carbon burial in the euxinic North Atlantic basin during the late Cenomanian oceanic anoxic event. Paleoceanography 17, 1–13 (2002).

    Article  Google Scholar 

  3. Pratt, L., Arthur, M., Dean, W. & Scholle, P. The Evolution of the Western Interior Basin. Vol. 39. Geological Association of Canada, Special Paper. 333–353 (1993).

  4. Sageman, B. B., Meyers, S. R. & Arthur, M. A. Orbital timescale and new C-isotope record for Cenomanian–Turonian boundary stratotype. Geology 34, 125–128 (2006).

    Article  Google Scholar 

  5. Arthur, M. A., Dean, W. E. & Schlanger, S. O. Variations in the global carbon cycle during the Cretaceous related to climate, volcanism, and changes in atmospheric CO2; Natural variations Archean to present. AGU Geophys. Monogr. 32, 504–529 (1985).

    Google Scholar 

  6. Mort, H. P. et al. Phosphorus and the roles of productivity and nutrient recycling during Oceanic Anoxic Event 2. Geology 35, 483–486 (2007).

    Article  Google Scholar 

  7. Dean, W. E. & Arthur, M. A. Iron–sulfur–carbon relationships in organic carbon rich sequences. I. Cretaceous western interior seaway. Am. J. Sci. 289, 708–743 (1989).

    Article  Google Scholar 

  8. Hetzel, A., Böttcher, M. E., Wortmann, U. G. & Brumsack, H. Paleo-redox conditions during OAE2 reflected in Demerara Rise sediment geochemistry (ODP Leg 207). Palaeogeogr. Palaeoclimatol. Palaeoecol. 273, 302–328 (2009).

    Article  Google Scholar 

  9. Arthur, M. A. Encyclopedia of Volcanoes (Academic, 2000).

    Google Scholar 

  10. Hansen, K. W. & Wallmann, K. Cretaceous and Cenozoic evolution of seawater composition, atmospheric O2 and CO2: A model perspective. Am. J. Sci. 303, 94–148 (2003).

    Article  Google Scholar 

  11. Canfield, D. E. Isotope fractionation by natural populations of sulphate-reducing bacteria. Geochim. Cosmochim. Acta 65, 1117–1124 (2001).

    Article  Google Scholar 

  12. Paytan, A., Kastner, M., Campbell, D. & Thiemens, M. H. Seawater sulfur isotope fluctuations in the Cretaceous. Science 304, 1663–1665 (2004).

    Article  Google Scholar 

  13. Ohkouchi, N. et al. Sulfur isotope records around Livello Bonarelli (northern Apennines, Italy) black shale at the Cenomanian–Turonian boundary. Geology 27, 535–538 (1999).

    Article  Google Scholar 

  14. Sinton, C. W. & Duncan, R. A. Potential links between ocean plateau volcanism and global ocean anoxia at the Cenomanian–Turonian boundary. Econ. Geol. 92, 836–842 (1997).

    Article  Google Scholar 

  15. Kerr, A. C. Oceanic plateau formation: A cause of mass extinction and black shale deposition around the Cenomanian–Turonian boundary. J. Geol. Soc. Lond. 155, 619–626 (1998).

    Article  Google Scholar 

  16. Turgeon, S. C. & Creaser, R. A. Cretaceous oceanic anoxic event 2 triggered by a massive magmatic episode. Nature 454, 323–326 (2008).

    Article  Google Scholar 

  17. Snow, L. J., Duncan, R. A. & Bralower, T. J. Trace element abundances in the Rock Canyon Anticline, Pueblo, Colorado, marine sedimentary section and their relationship to Caribbean plateau construction and oxygen anoxic event 2. Paleoceanography 20, PA3005 (2005).

    Google Scholar 

  18. Lowenstein, T. K., Hardie, L. A., Timofeeff, M. N. & Demicco, R. V. Secular variation in seawater chemistry and the origin of calcium chloride basinal brines. Geology 31, 857–860 (2003).

    Article  Google Scholar 

  19. Wortmann, U. G. & Chernyavsky, B. M. Effect of evaporite deposition on Early Cretaceous carbon and sulphur cycling. Nature 446, 654–656 (2007).

    Article  Google Scholar 

  20. Jørgensen, B. B. A thiosulphate shunt in the sulfur cycle of marine sediments. Science 249, 152–154 (1990).

    Article  Google Scholar 

  21. Burke, K. & Sengör, C. Ten metre global sea-level change associated with South Atlantic Aptian salt deposition. Mar. Geol. 83, 309–312 (1988).

    Article  Google Scholar 

  22. Caraco, N. F., Cole, J. J. & Likens, G. E. Evidence for sulphate-controlled phosphorus release from sediments of aquatic systems. Nature 341, 316–318 (1989).

    Article  Google Scholar 

  23. Caraco, N. F., Cole, J. J. & Likens, G. E. Sulphate control of phosphorus availability in lakes. Hydrobiologia 253, 275–280 (1993).

    Article  Google Scholar 

  24. Boudreau, B. P. & Westrich, J. T. The dependence of bacterial sulphate reduction on sulphate concentration in marine sediments. Geochim. Cosmochim. Acta 48, 2503–2516 (1984).

    Article  Google Scholar 

  25. Ingall, E. D., Bustin, R. M. & Van Cappellen, P. Influence of water column anoxia on the burial and preservation of carbon and phosphorus in marine shales. Geochim. Cosmochim. Acta 57, 303–316 (1993).

    Article  Google Scholar 

  26. Murray, T. E. The correlation between iron sulfide precipitation and hypolimnetic phosphorus accumulation during one summer in a softwater lake. Can. J. Fish. Aquat. Sci. 52, 1190–1194 (1995).

    Article  Google Scholar 

  27. Van Cappellen, P. V. & Ingall, E. D. Redox stabilization of the atmosphere and oceans by phosphorus-limited marine productivity. Science 271, 493–496 (1996).

    Article  Google Scholar 

  28. Habicht, K. S., Gade, M., Thamdrup, B., Berg, P. & Canfield, D. E. Calibration of sulphate levels in the Archean ocean. Science 298, 2372–2374 (2002).

    Article  Google Scholar 

  29. Hurtgen, M. T., Halverson, G. P., Arthur, M. A. & Hoffman, P. F. Sulfur cycling in the aftermath of a 635-Ma snowball glaciation: Evidence for a syn-glacial sulfidic deep ocean. Earth Planet. Sci. Lett. 245, 551–570 (2006).

    Article  Google Scholar 

  30. Obradovich, J. Evolution of the Western Interior Basin. Vol. 39. Geological Society of Canada Special Paper. 379–396 (1993).

Download references

Acknowledgements

We are grateful for reviews by L. Kump, H. Mort and U. Wortmann.

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Authors and Affiliations

  1. Earth and Planetary Sciences, Northwestern University, 1850 Campus Drive, Evanston, Illinois 60208, USA

    Derek D. Adams, Matthew T. Hurtgen & Bradley B. Sageman

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  1. Derek D. Adams
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  2. Matthew T. Hurtgen
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  3. Bradley B. Sageman
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Contributions

M.T.H. conceived and wrote the paper with contributions from B.B.S. and D.D.A. D.D.A. provided the geochemical data, M.T.H. carried out the modelling, and all authors provided intellectual input.

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Correspondence to Matthew T. Hurtgen.

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The authors declare no competing financial interests.

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Adams, D., Hurtgen, M. & Sageman, B. Volcanic triggering of a biogeochemical cascade during Oceanic Anoxic Event 2. Nature Geosci 3, 201–204 (2010). https://doi.org/10.1038/ngeo743

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