Grants per year
Personal profile
Research Interests
Geobiology of extreme environments including the deep subsurface, hydrothermal systems, ultrabasic/acidic systems, and caves; Compound‐specific isotope organic geochemistry (H,C,S) applied to microbial ecology, biogeochemical cycling in microbe‐rich environments and the sedimentary record of environmental perturbation; Neoproterozoic chemical evolution of the ocean‐atmosphere system during extreme isotope excursions; Carbonate sedimentology, stratigraphy, and geochemistry with an emphasis on microbialite preservation and morphology.
Education/Academic qualification
Geobiology, PhD, California Institute of Technology
… → 2013
Geobiology, MS, California Institute of Technology
… → 2008
Earth and Planetary Sciences, Environmental Studies, BA, Washington University St. Louis
… → 2007
Research interests keywords
- Biogeochemical cycling
- Carbonate sedimentology
- Microbialite
- Neoproterozoic chemical evolution
- Stratigraphy
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Collaborations and top research areas from the last five years
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Collaborative Research: Evolution of Subsurface Microbe-Rock-Fluid Systems
9/1/21 → 8/31/26
Project: Research project
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CAREER: triple-isotope approach to unraveling subsurface food webs
6/1/21 → 5/31/26
Project: Research project
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Constraining the Mammoth Cave Nitrogen Cycle with a Combined Sequencing-Isotope Approach
New Mexico Institute of Mining and Technology, National Park Service
11/1/20 → 12/31/21
Project: Research project
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Null Detection of Life and the Quest for a more Refined Understanding of the True Limits of Habitability
Canadian Institute for Advanced Research
6/10/20 → 10/30/21
Project: Research project
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A global perspective on bacterial diversity in the terrestrial deep subsurface
Soares, A., Edwards, A., An, D., Bagnoud, A., Bradley, J., Barnhart, E., Bomberg, M., Budwill, K., Caffrey, S. M., Fields, M., Gralnick, J., Kadnikov, V., Momper, L., Osburn, M., Mu, A., Moreau, J. W., Moser, D., Purkamo, L., Rassner, S. M., Sheik, C. S., & 5 others , 2023, In: Microbiology (United Kingdom). 169, 1, 001172.Research output: Contribution to journal › Article › peer-review
Open Access3 Scopus citations -
Younger Dryas and early Holocene climate in south Greenland inferred from oxygen isotopes of chironomids, aquatic Moss, and Moss cellulose
Puleo, P. J. K., Masterson, A. L., Medeiros, A. S., Schellinger, G., Steigleder, R., Woodroffe, S., Osburn, M. R. & Axford, Y., Nov 15 2022, In: Quaternary Science Reviews. 296, 107810.Research output: Contribution to journal › Article › peer-review
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Coeval Drying Across the Central Tropical Pacific Over the Last Millennium
Wyman, D. A., Conroy, J. L., Osburn, M. R. & Atwood, A. R., Jul 2021, In: Paleoceanography and Paleoclimatology. 36, 7, e2021PA004311.Research output: Contribution to journal › Article › peer-review
4 Scopus citations -
Electrochemical evidence for in situ microbial activity at the Deep Mine Microbial Observatory (DeMMO), South Dakota, USA
Rowe, A. R., Abuyen, K., Lam, B. R., Kruger, B., Casar, C. P., Osburn, M. R., El-Naggar, M. Y. & Amend, J. P., Mar 2021, In: Geobiology. 19, 2, p. 173-188 16 p.Research output: Contribution to journal › Article › peer-review
4 Scopus citations -
Iron-Fueled Life in the Continental Subsurface: Deep Mine Microbial Observatory, South Dakota, USA
Casar, C. P., Momper, L. M., Kruger, B. R. & Osburn, M. R., Sep 2021, In: Applied and Environmental Microbiology. 87, 20, p. 1-14 14 p.Research output: Contribution to journal › Article › peer-review
Open Access8 Scopus citations