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Liam Peterson

Graduate Student


GEO 2112
Geology Building
8000 Regents Drive
College Park, MD 20742

Fax: (301) 314-9661

ldpete [at] umd [dot] edu




Research Interests

My research aims to characterize the volatile element contents (primarily water) of early formed planetesimals in the inner solar system. I conduct my analyses using a combination of Fourier transform infrared spectroscopy (FTIR) and secondary ion mass spectrometry (SIMS). I am also conducting experiments to constrain the partitioning behavior of water in olivine at low pressures (<200 MPa) relevant to the upper crust and small meteoritic parent bodies.


Peterson, L.D., Newcombe, M.E.,  Alexander, C.M.O'D., Wang, J., Sarafian, A.R.,  Bischoff, A.,  Nielsen, S.G. (2022) The H2O content of the ureilite parent body. Geochimica et Cosmochimica Acta. DOI: 10.1016/j.gca.2022.10.036

Steiner R.A., Rooney T.O., Girard G., Rogers N., Ebinger C. J., Peterson L., Phillips R.K. (2022) Initial Cenozoic magmatic activity in East Africa: new geochemical constraints on magma distribution within the Eocene continental flood basalt province. Geological Society, London, Special Publications. 518 435-465. DOI: 10.1144/SP518-2020-262

Newcombe M.E., Nielsen S.G., Peterson L.D., Wang J., Alexander C.M.O., Sarafian A.R., Shimizu K., Nittler L.R., Irving A.J. (2023) Degassing of early-formed planetesimals restricted water delivery to Earth. Nature. 615 854-857. DOI: 10.1038/s41586-023-05721-5

Peterson L.D., Newcombe M.E., Alexander C.M.O., Wang J., Klein F., Bekaert D.V., Nielsen S.G. (2023) The H content of aubrites: An evaluation of bulk versus in situ methods for quantifying water in meteorites. Earth and Planetary Science Letters. 620 118341. DOI: 10.1016/j.epsl.2023.118341