• 4872 Citations
1985 …2020

Research output per year

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Personal profile

Research Interests

Professor Sageman’s research is grounded in stratigraphy, with a particular focus on chronostratigraphy via the integration of stratigraphic data with geochronology, astrochronology, and chemostratigraphy. Many studies are directed at development of high-resolution time scales for stratigraphic successions through application of the tools mentioned above, as well as sequence stratigraphic techniques. The driving motivation for improved time scales builds from his other main research interest—understanding the processes that control burial of carbon in ancient sediments and the relationships between changes in the global carbon cycle and ocean-climate interactions. A particular emphasis of his work has been Ocean Anoxic Events, and more recently, other major ocean-climate perturbations such as the Neoproterozoic glaciations, the P-Tr boundary, the K-T boundary, and the PETM, which are subjects of study by PhD and post-doctoral advisees collaborating with him and departmental colleagues Jacobson and Hurtgen. He has devoted much of his career to studies of the Cretaceous Western Interior basin of North America, but recent work has included a number of other research sites in Europe and Asia, as well as ODP core samples.

Education/Academic qualification

Geological Sciences, PhD, University of Colorado Boulder

… → 1991

Biology, BS, Denison University

… → 1979

Research interests

  • Carbon Cycle
  • Geochemistry
  • Paleobotany
  • Paleoclimate
  • Stratigraphy

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  • Research Output

    Calcium isotope evidence for environmental variability before and across the Cretaceous-Paleogene mass extinction

    Linzmeier, B. J., Jacobson, A. D., Sageman, B. B., Hurtgen, M. T., Ankney, M. E., Petersen, S. V., Tobin, T. S., Kitch, G. D. & Wang, J., Jan 1 2020, In : Geology. 48, 1, p. 34-38 5 p.

    Research output: Contribution to journalArticle

    Open Access
  • 1 Scopus citations

    CO2-induced climate forcing on the fire record during the initiation of Cretaceous oceanic anoxic event 2

    Baker, S. J., Belcher, C. M., Barclay, R. S., Hesselbo, S. P., Laurin, J. & Sageman, B. B., Jan 1 2020, In : Bulletin of the Geological Society of America. 132, 1-2, p. 321-333 13 p.

    Research output: Contribution to journalArticle

    Open Access
  • 1 Scopus citations
    Open Access
  • Neritic ecosystem response to Oceanic Anoxic Event 2 in the Cretaceous Western Interior Seaway, USA

    Boudinot, F. G., Dildar, N., Leckie, R. M., Parker, A., Jones, M. M., Sageman, B. B., Bralower, T. J. & Sepúlveda, J., May 15 2020, In : Palaeogeography, Palaeoclimatology, Palaeoecology. 546, 109673.

    Research output: Contribution to journalArticle

  • Assessing the Contributions of Comet Impact and Volcanism Toward the Climate Perturbations of the Paleocene-Eocene Thermal Maximum

    Liu, Z., Horton, D. E., Tabor, C., Sageman, B. B., Percival, L. M. E., Gill, B. C. & Selby, D., Dec 28 2019, In : Geophysical Research Letters. 46, 24, p. 14798-14806 9 p.

    Research output: Contribution to journalArticle