Katherine Freeman

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Affiliate Researcher
Titles and Affiliations
Evan Pugh University Professor of Geosciences, Geosciences

Research Summary

Carbon, water and climate; biomarkers of ancient landscapes; fire markers; habitats of early humans; microbial biogeochemistry and biosignatures; oil, microbes and sediments in the Gulf of Mexico; and Pico-CSIA and early life of Earth.

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Recent Publications

Synchronous Marine and Terrestrial Carbon Cycle Perturbation in the High Arctic During the PETM

Cui, Y., Diefendorf, A. F., Kump, L. R., Jiang, S. & Freeman, K. H., Apr 2021, In: Paleoceanography and Paleoclimatology. 36, 4, e2020PA003942.

Research output: Contribution to journalArticlepeer-review

Decreased soil carbon in a warming world: Degraded pyrogenic carbon during the Paleocene-Eocene Thermal Maximum, Bighorn Basin, Wyoming

Denis, E. H., Maibauer, B. J., Bowen, G. J., Jardine, P. E., Harrington, G. J., Baczynski, A. A., McInerney, F. A., Collinson, M. E., Belcher, C. M., Wing, S. L. & Freeman, K. H., Jul 15 2021, In: Earth and Planetary Science Letters. 566, 116970.

Research output: Contribution to journalArticlepeer-review

Soil carbon degradation during the Paleocene-Eocene Thermal Maximum in the Piceance Basin, USA

Denis, E. H., Foreman, B. Z. & Freeman, K. H., Feb 15 2021, In: Palaeogeography, Palaeoclimatology, Palaeoecology. 564, 110182.

Research output: Contribution to journalArticlepeer-review

Biased preservation of Pleistocene climate variability proxies at Olduvai Gorge, Tanzania

Ferland, T. M., Colcord, D. E., Shilling, A. M., Brassell, S. C., Stanistreet, I. G., Stollhofen, H., Njau, J. K., Schick, K. D., Toth, N. & Freeman, K. H., Jan 15 2021, In: Palaeogeography, Palaeoclimatology, Palaeoecology. 562, 109940.

Research output: Contribution to journalArticlepeer-review

Late Miocene C4 Grassland Fire Feedbacks on the Indian Subcontinent

Karp, A. T., Uno, K. T., Polissar, P. J. & Freeman, K. H., Apr 2021, In: Paleoceanography and Paleoclimatology. 36, 4, e2020PA004106.

Research output: Contribution to journalArticlepeer-review

Soil Carbon Loss and Weak Fire Feedbacks During Pliocene C4 Grassland Expansion in Australia

Karp, A. T., Andrae, J. W., McInerney, F. A., Polissar, P. J. & Freeman, K. H., Jan 28 2021, In: Geophysical Research Letters. 48, 2, e2020GL090964.

Research output: Contribution to journalLetterpeer-review

Hydrologic Changes Drove the Late Miocene Expansion of C4 Grasslands on the Northern Indian Subcontinent

Polissar, P. J., Uno, K. T., Phelps, S. R., Karp, A. T., Freeman, K. H. & Pensky, J. L., Apr 2021, In: Paleoceanography and Paleoclimatology. 36, 4, e2020PA004108.

Research output: Contribution to journalArticlepeer-review

Origin of a global carbonate layer deposited in the aftermath of the Cretaceous-Paleogene boundary impact

Bralower, T. J., Cosmidis, J., Heaney, P. J., Kump, L. R., Morgan, J. V., Harper, D. T., Lyons, S. L., Freeman, K. H., Grice, K., Wendler, J. E., Zachos, J. C., Artemieva, N., Chen, S. A., Gulick, S. P. S., House, C. H., Jones, H. L., Lowery, C. M., Nims, C., Schaefer, B., Thomas, E. & 1 others, Vajda, V., Oct 15 2020, In: Earth and Planetary Science Letters. 548, 116476.

Research output: Contribution to journalArticlepeer-review

Density Functional Theory Predictions of Noncovalent Hydrogen Isotope Effects during Octane Sorption to a Kaolinite Surface

Fox, A. C., Boettger, J. D., Kubicki, J. D. & Freeman, K. H., Oct 15 2020, In: ACS Earth and Space Chemistry. 4, 10, p. 1756-1764 9 p.

Research output: Contribution to journalArticlepeer-review

Introduction

Freeman, K. H. & Jeanloz, R., May 2020, In: Annual Review of Earth and Planetary Sciences. 48, p. v-vii

Research output: Contribution to journalEditorialpeer-review