Christian J. Bjerrum

Christian J. Bjerrum

Professor MSO

ORCID: 0000-0002-7804-1633

Publication year:
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  1. 2024
  2. Published

    Combined cadmium and chromium isotopes record a collapse of bioproductivity across the Cretaceous—Paleogene boundary in the Danish basin

    Frederiksen, Jesper Allan, Thibault, Nicolas Rudolph, Gilleaudeau, G. J., Bjerrum, Christian J., Moreau, J. & Frei, Robert, 2024, In: Chemical Geology. 654, 122058.

    Research output: Contribution to journal › Journal article › Research › peer-review

  3. 2023
  4. Published

    Comparing two ocean biogeochemical models of Chesapeake Bay with and without the sulfur cycle instead highlights the importance of particle sinking, burial, organic matter, nitrification and light attenuation

    Jin, R., Pradal, M., Hantsoo, K., Gnanadesikan, A., St-Laurent, P. & Bjerrum, Christian J., 2023, In: Ocean Modelling. 182, 15 p., 102175.

    Research output: Contribution to journal › Journal article › Research › peer-review

  5. Published

    Constructing a model including the cryptic sulfur cycle in Chesapeake Bay requires judicious choices for key processes and parameters

    Jin, R., Pradal, M., Hantsoo, K., Gnanadesikan, A., St-Laurent, P. & Bjerrum, Christian J., 2023, In: MethodsX. 11, 18 p., 102253.

    Research output: Contribution to journal › Journal article › Research › peer-review

  6. Published

    Initial results of coring at Prees, Cheshire Basin, UK (ICDP JET project): Towards an integrated stratigraphy, timescale, and Earth system understanding for the Early Jurassic

    Hesselbo, S. P., Al-Suwaidi, A., Baker, S. J., Ballabio, G., Belcher, C. M., Bond, A., Boomer, I., Bos, R., Bjerrum, C. J., Bogus, K., Boyle, R., Browning, J. V., Butcher, A. R., Condon, D. J., Copestake, P., Daines, S., Dalby, C., Damaschke, M., Damborenea, S. E., Deconinck, J. F. & 53 others, Dickson, A. J., Fendley, I. M., Fox, C. P., Fraguas, A., Frieling, J., Gibson, T. A., He, T., Hickey, K., Hinnov, L. A., Hollaar, T. P., Huang, C., Hudson, A. J. L., Jenkyns, H. C., Idiz, E., Jiang, M., Krijgsman, W., Korte, Christoph, Leng, M. J., Lenton, T. M., Leu, K., Little, C. T. S., Macniocaill, C., Manceñido, M. O., Mather, T. A., Mattioli, E., Miller, K. G., Newton, R. J., Page, K. N., Pálfy, J., Pieńkowski, G., Porter, R. J., Poulton, S. W., Riccardi, A. C., Riding, J. B., Roper, A., Ruhl, M., Silva, R. L., Storm, M. S., Suan, G., Szúcs, D., Thibault, Nicolas Rudolph, Uchman, A., Stanley, J. N., Ullmann, C. V., Van De Schootbrugge, B., Vickers, M. L., Wadas, S., Whiteside, J. H., Wignall, P. B., Wonik, T., Xu, W., Zeeden, C. & Zhao, K., 2023, In: Scientific Drilling. 32, p. 1-25 25 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  7. Published

    Late Jurassic – Early Cretaceous marine deoxygenation in NE Greenland

    Hovikoski, J., Olivarius, M., Bojesen-Koefoed, J. A., Piasecki, Stefan, Alsen, P., Fyhn, M. B. W., Sharp, I., Bjerager, M., Vosgerau, H., Lindström, Sofie, Bjerrum, Christian J. & Ineson, J., 2023, In: Journal of the Geological Society. 180, 3, 16 p., jgs2022-058.

    Research output: Contribution to journal › Journal article › Research › peer-review

  8. Published

    Widespread seafloor anoxia during generation of the Ediacaran Shuram carbon isotope excursion

    Ostrander, C. M., Bjerrum, Christian J., Ahm, A. S. C., Stenger, S. R., Bergmann, K. D., El-Ghali, M. A. K., Harthi, A. R., Aisri, Z. & Nielsen, S. G., 2023, In: Geobiology. 21, 5, p. 556-570

    Research output: Contribution to journal › Journal article › Research › peer-review

  9. 2022
  10. Published

    Late Triassic paleowinds from lacustrine wave ripple marks in the Fleming Fjord Group, central East Greenland

    Mau, M., Bjerrum, Christian J. & Clemmensen, Lars B, 2022, In: Palaeogeography, Palaeoclimatology, Palaeoecology. 586, 11 p., 110776.

    Research output: Contribution to journal › Journal article › Research › peer-review

  11. 2021
  12. Published

    The Ca and Mg isotope record of the Cryogenian Trezona carbon isotope excursion

    Ahm, A. S. C., Bjerrum, Christian J., Hoffman, P. F., Macdonald, F. A., Maloof, A. C., Rose, C. V., Strauss, J. V. & Higgins, J. A., 15 Aug 2021, In: Earth and Planetary Science Letters. 568, 13 p., 117002.

    Research output: Contribution to journal › Journal article › Research › peer-review

  13. Published

    Minimum levels of atmospheric oxygen from fossil tree roots imply new plant−oxygen feedback

    Sønderholm, F. & Bjerrum, Christian J., 2021, In: Geobiology. 19, 3, p. 250-260 11 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  14. Published

    Petrographic carbon in ancient sediments constrains Proterozoic Era atmospheric oxygen levels

    Canfield, D. E., van Zuilen, M. A., Nabhan, S., Bjerrum, Christian J., Zhang, S., Wang, H. & Wang, X., 2021, In: Proceedings of the National Academy of Sciences of the United States of America. 118, 23, 8 p., 2101544118.

    Research output: Contribution to journal › Journal article › Research › peer-review

  15. Published

    Redox element record shows that environmental perturbations associated with the t-oae were of longer duration than the carbon isotope record suggests – the aubach section, sw germany

    Hougård, Iben Winther, Bojesen-Koefoed, J. A., Vickers, M. L., Ullmann, C. V., Bjerrum, Christian J., Rizzi, Malgorzata & Korte, Christoph, 2021, In: Newsletters on Stratigraphy. 54, 2, p. 229-246

    Research output: Contribution to journal › Journal article › Research › peer-review

  16. 2020
  17. Published

    The modern phosphorus cycle informs interpretations of Mesoproterozoic Era phosphorus dynamics

    Canfield, D. E., Bjerrum, Christian J., Zhang, S., Wang, H. & Wang, X., Sep 2020, In: Earth-Science Reviews. 208, 24 p., 103267.

    Research output: Contribution to journal › Review › Research › peer-review

  18. Published

    Cold spells in the Nordic Seas during the early Eocene Greenhouse

    Vickers, M. L., Lengger, S. K., Bernasconi, S. M., Thibault, Nicolas Rudolph, Schultz, B. P., Fernandez, A., Ullmann, C. V., McCormack, P., Bjerrum, Christian J., Rasmussen, J. A., Hougård, Iben Winther & Korte, Christoph, 2020, In: Nature Communications. 11, 1, 12 p., 4713.

    Research output: Contribution to journal › Journal article › Research › peer-review

  19. Published

    Development of Iron Speciation Reference Materials for Palaeoredox Analysis

    Alcott, L. J., Krause, A. J., Hammarlund, E. U., Bjerrum, Christian J., Scholz, F., Xiong, Y., Hobson, A. J., Neve, L., Mills, B. J. W., Marz, C., Schnetger, B., Bekker, A. & Poulton, S. W., 2020, In: Geostandards and Geoanalytical Research. 44, 3, p. 581-591 11 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  20. Published

    Stratigraphically controlled silicification in Danian chalk and its implications for reservoir properties, southern Danish Central Graben

    Blinkenberg, Kasper Høj, Anderskouv, Kresten, Sheldon, E., Bjerrum, Christian J. & Stemmerik, L., 2020, In: Marine and Petroleum Geology. 115, 15 p., 104134.

    Research output: Contribution to journal › Journal article › Research › peer-review

  21. 2019
  22. Published

    An early diagenetic deglacial origin for basal Ediacaran “cap dolostones”

    Ahm, A. S. C., Maloof, A. C., Macdonald, F. A., Hoffman, P. F., Bjerrum, Christian J., Bold, U., Rose, C. V., Strauss, J. V. & Higgins, J. A., 2019, In: Earth and Planetary Science Letters. 506, p. 292-307 16 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  23. Published

    Paleoenvironmental proxies and what the Xiamaling Formation tells us about the mid-Proterozoic ocean

    Zhang, S., Wang, X., Wang, H., Bjerrum, Christian J., Hammarlund, E. U., Haxen, Emma Rysgaard, Wen, H., Ye, Y. & Canfield, D. E., 2019, In: Geobiology. 17, 3, p. 225-246 22 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  24. 2018
  25. Published

    A mesoproterozoic iron formation

    Canfield, D. E., Zhang, S., Wang, H., Wang, X., Zhao, W., Su, J., Bjerrum, Christian J., Haxen, Emma Rysgaard & Hammarlund, E. U., 2018, In: Proceedings of the National Academy of Sciences of the United States of America. 115, 17, p. E3895-E3904 10 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  26. Published

    Bioturbation and directionality in Earth's carbon isotope record across the Neoproterozoic-Cambrian transition

    Boyle, R. A., Dahl, Tais Wittchen, Bjerrum, Christian J. & Canfield, D. E., 2018, In: Geobiology. 16, 3, p. 252-278 27 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  27. Published

    Quantifying early marine diagenesis in shallow-water carbonate sediments

    Ahm, A. C., Bjerrum, Christian J., Blattler, C. L., Swart, P. K. & Higgins, J. A., 2018, In: Geochimica et Cosmochimica Acta. 236, p. 140-159 20 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  28. Published

    Sea level, climate, and ocean poisoning by sulfide all implicated in the first animal mass extinction

    Bjerrum, Christian J., 2018, In: Geology. 46, 6, p. 575-576 2 p.

    Research output: Contribution to journal › Editorial › Research › peer-review

  29. 2017
  30. Published

    A new correlation of Triassic-Jurassic boundary successions in NW Europe, Nevada and Peru, and the Central Atlantic Magmatic Province: A time-line for the end-Triassic mass extinction

    Lindström, Sofie, van de Schootbrugge, B., Hansen, K. H., Pedersen, G. K., Alsen, P., Thibault, Nicolas Rudolph, Dybkjaer, K., Bjerrum, Christian J. & Nielsen, L. H., 2017, In: Palaeogeography, Palaeoclimatology, Palaeoecology - An International Journal for the Geo-Sciences. 478, p. 80-102 23 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  31. Published

    Disentangling the record of diagenesis, local redox conditions, and global seawater chemistry during the latest Ordovician glaciation

    Ahm, A. C., Bjerrum, Christian J. & Hammarlund, E. U., 2017, In: Earth and Planetary Science Letters. 459, p. 145-156 12 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  32. Published

    Oxygen, climate and the chemical evolution of a 1400 million year old tropical marine setting

    Wang, X., Zhang, S., Wang, H., Bjerrum, Christian J., Hammarlund, E. U., Haxen, Emma Rysgaard, Su, J., Wang, Y. & Canfield, D. E., 2017, In: American Journal of Science. 317, 8, p. 861-900 40 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  33. 2016
  34. Published

    Sufficient oxygen for animal respiration 1,400 million years ago

    Zhang, S., Wang, X., Wang, H., Bjerrum, Christian J., Hammarlund, E. U., Canas Portela Costa, M. M., Connelly, James, Zhang, B., Su, J. & Canfield, D. E., 16 Feb 2016, In: National Academy of Sciences. Proceedings. 113, 7, p. 1731-1736 6 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  35. Published

    En krise i livets historie: masseuddøen og samtidig vulkanisme ved Trias–Jura-grænsen

    Lindström, S., Pedersen, G. K., Dybkjær, K., Weibel, R., Nielsen, L. H., Nytoft, H., Hansen, K. H., Thibault, Nicolas Rudolph, Bjerrum, Christian J., Korte, Christoph, Waight, Tod & Tegner, C., 2016, In: Geoviden. 2016, 1, p. 2-20

    Research output: Contribution to journal › Journal article › Communication

  36. Published

    Orbital calibration of the late Campanian carbon isotope event in the North Sea

    Perdiou, A., Thibault, Nicolas Rudolph, Anderskouv, Kresten, van Buchem, F., Buijs, G. J. A. & Bjerrum, Christian J., 2016, In: Journal of the Geological Society. 173, 3, p. 504-517 14 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  37. Published

    Reply to Planavsky et al.: Strong evidence for high atmospheric oxygen levels 1,400 million years ago

    Zhang, S., Wang, X., Wang, H., Bjerrum, Christian J., Hammarlund, E. U., Dahl, Tais Wittchen & Canfield, D. E., 2016, In: National Academy of Sciences. Proceedings. 113, 19, p. E2552-E2553 2 p.

    Research output: Contribution to journal › Comment/debate › Research › peer-review

  38. 2015
  39. Published

    CA AND MG ISOTOPE RECORD OF THE DESCENT AND ESCAPE OF THE END-CRYOGENIAN GLACIATION

    Ahm, A. C., Bjerrum, Christian J., Hoffman, P., Macdonald, F., Maloof, A., Rose, C. & Higgins, J., 2015. 1 p.

    Research output: Contribution to conference › Conference abstract for conference › Research › peer-review

  40. Published

    Ca and Mg Isotope Stratigraphy of the Trezona C Isotope Excursion: Geochemical Record of the Descent into a Snowball?

    Ahm, A. C., Bjerrum, Christian J., Hoffman, P., Macdonald, F., Maloof, A., Rose, C. & Higgins, J., 2015.

    Research output: Contribution to conference › Conference abstract for conference › Research › peer-review

  41. Published

    Iron oxides, divalent cations, silica, and the early earth phosphorus crisis

    Jones, C., Nomosatryo, S., Crowe, S. A., Bjerrum, Christian J. & Canfield, D. E., 2015, In: Geology. 43, 2, p. 135-138

    Research output: Contribution to journal › Journal article › Research › peer-review

  42. Published

    Orbital forcing of climate 1.4 billion years ago

    Zhang, S., Wang, X., Hammarlund, E. U., Wang, H., Canas Portela Costa, M. M., Bjerrum, Christian J., Connelly, James, Zhang, B., Bian, L. & Canfield, D. E., 2015, In: Proceedings of the National Academy of Sciences of the United States of America. 112, 12, p. E1406-E1413 8 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  43. 2014
  44. Published

    Arctic black shale formation during Cretaceous Oceanic Anoxic Event 2

    Lenniger, M., Nøhr-Hansen, H., Hills, L. V. & Bjerrum, Christian J., 1 Sep 2014, In: Geology. 42, 9, p. 799-802 4 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  45. Published

    A model-based insight into the coupling of nitrogen and sulfur cycles in a coastal upwelling system

    Muchamad, A. A., Canfield, D. E., Fennel, K., Thamdrup, B. & Bjerrum, Christian J., 2014, In: Journal of Geophysical Research: Biogeosciences. 119, 3, p. 264-285 22 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  46. Published

    The link between the rise of land plants, cloud-albedo, and carbon cycle perturbation

    Ahm, A. C. & Bjerrum, Christian J., 2014. 1 p.

    Research output: Contribution to conference › Conference abstract for conference › Research › peer-review

  47. 2013
  48. Published

    Tracing euxinia by molybdenum concentrations in sediments using handheld X-ray fluorescence spectroscopy (HHXRF)

    Dahl, Tais Wittchen, Ruhl, M., Hammarlund, E. U., Canfield, D. E., Rosing, Minik Thorleif & Bjerrum, Christian J., 18 Dec 2013, In: Chemical Geology. 360-361, p. 241-251 11 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  49. Published

    Carbon-isotope stratigraphy from terrestrial organic matter through the Monterey event, Miocene, New Jersey margin (IODP Expedition 313)

    Fang, L., Bjerrum, Christian J., Hesselbo, S. P., Kotthoff, U., McCarthy, F. M. G., Huang, B. & Ditchfield, P. W., 1 Oct 2013, In: Geosphere. 9, 5, p. 1303-1318 16 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  50. Published

    Testing sequence stratigraphic models by drilling Miocene foresets on the New Jersey shallow shelf

    Miller, K. G., Mountain, G. S., Browning, J. V., Katz, M. E., Monteverde, D., Sugarman, P. J., Ando, H., Bassetti, M. A., Bjerrum, Christian J., Hodgson, D., Hesselbo, S., Karakaya, S., Proust, J. & Rabineau, M., 1 Oct 2013, In: Geosphere. 9, 5, p. 1236-1256 21 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  51. Published

    Large Igneous Province volcanism, ocean anoxia and marine mass extinction

    Ruhl, M., Bjerrum, Christian J., Canfield, D., Korte, Christoph, Stemmerik, L. & Frei, Robert, 2013, In: Mineralogical Magazine. 77, 5, p. 2097 1 p.

    Research output: Contribution to journal › Conference abstract in journal › Research

  52. Published

    Mochras Revisited: A New Global standard for Early Jurassic Earth History

    Hesselbo, S. P., Bjerrum, Christian J., Hinnov, L., MacNiocaill, C., Miller, K., Riding, J. B., van de Schootbrugge, B., Korte, Christoph & and the Mochras Revisited Science Team, 2013, In: Scientific Drilling. 16, 81–91

    Research output: Contribution to journal › Journal article › Research › peer-review

  53. Published

    Mochras borehole revisited: a new global standard for Early Jurassic earth history

    Hesselbo, S. P., Bjerrum, Christian J., Hinnov, L. A., MacNiocaill, C., Miller, K. G., Riding, J. B. & van de Schootbrugge, B., 2013, In: Scientific Drilling. 16, p. 81-91 11 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  54. Published

    Ocean anoxia and large igneous provinces

    Ruhl, M., Bjerrum, Christian J., Canfield, D. E., Korte, Christoph, Stemmerik, L. & Frei, Robert, 2013, In: Geophysical Research Abstracts. 15, 1 p.

    Research output: Contribution to journal › Conference abstract in journal › Research

  55. Published

    Ocean oxygenation and nutrification in relation Phanerozoic climate evolution

    Bjerrum, Christian J., 2013. 2 p.

    Research output: Contribution to conference › Paper › Research

  56. Published

    Ocean redox change at the Permian-Triassic mass extinction

    Ruhl, M., Bjerrum, Christian J., Canfield, D. E. & Stemmerik, L., 2013, The Permian Strata of Svalbard: Norwegian Polar institute, Tromsø, april 10-12, 2013 Abstracts and Proceedings. Bond, D. & Blomeier, D. (eds.). Norwegian Polar Institute (NPI), p. 20-21 2 p.

    Research output: Chapter in Book/Report/Conference proceeding › Conference abstract in proceedings › Research

  57. Published

    Paleoredox chemistry of Cenomanian–Coniacian black shales at high paleolatitudes: Implications for the extent of anoxia during OAE2

    Lenniger, M., Nøhr-Hansen, H., Hills, L. V. & Bjerrum, Christian J., 2013, In: Mineralogical Magazine. 77, 5, p. 1585 1 p.

    Research output: Contribution to journal › Conference abstract in journal › Research

  58. Published

    Regional deep water anoxic conditions during the Hirnantian extinction event

    Ahm, A. C., Bjerrum, Christian J. & Hammarlund, E., 2013, In: Mineralogical Magazine. 77, 3, p. 563 1 p.

    Research output: Contribution to journal › Conference abstract in journal › Research

  59. Published

    Statistical classification of log response as an indicator of facies variation during changes in sea level: integrated Ocean Drilling Program Expedition 313

    Inwood, J., Lofi, J., Davies, S., Basile, C., Bjerrum, Christian J., Mountain, G., Proust, J., Otsuka, H. & Valppu, H., 2013, In: Geosphere. 9, 4, p. 1025-1043 19 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  60. 2012
  61. Published

    A sulfidic driver for the end-Ordovician mass extinction

    Hammarlund, E., Dahl, T. W., Harper, D. A. T., Bond, D. P. G., Nielsen, Arne Thorshøj, Bjerrum, Christian J., Schovsbo, N. H., Schönlaub, H. P., Zalasiewicz, J. A. & Canfield, D. E., 2012, In: Earth and Planetary Science Letters. 331-332, p. 128-139 12 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  62. 2011
  63. Published

    OAE2 in marine sections at high northern palaeolatitudes?

    Lenniger, M., Pedersen, G. K. & Bjerrum, Christian J., Aug 2011.

    Research output: Contribution to conference › Conference abstract for conference › Research

  64. Published

    Rosing, Bird, Sleep & Bjerrum reply

    Rosing, Minik Thorleif, Bird, D., Sleep, N. & Bjerrum, Christian J., 2 Jun 2011, In: Nature. 474, 7349, p. E4-E5 2 p.

    Research output: Contribution to journal › Comment/debate › Research › peer-review

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