Kenneth A. Farley
W.M. Keck Foundation Professor of Geochemistry
B.S., Yale University, 1986; Ph.D., University of California (San Diego), 1991. Assistant Professor, Caltech, 1993-96; Associate Professor, 1997-98; Professor, 1998-2003; Keck Foundation Professor, 2003-. Director, Tectonic Observatory, 2003-04; Division Chair, 2004-14.
Research Summary
I am a geochemist with primary interest in noble gas isotopes and their application to a range of earth science problems. Topics I study in my laboratory include the chemical and isotopic evolution of the Earth's mantle and atmosphere; petrogenesis of oceanic lavas; geochronometry and low temperature thermochronometry; the geologic history of the interplanetary dust flux as recorded in deep sea sediments, and methods and nuclear physics of cosmogenic surface exposure dating. I am also interested in the geochemistry and geochronology of Mars. I am a participating scientist on the Curiosity Mars rover mission exploring Gale Crater, and I am Project Scientist for NASA’s Mars 2020 mission scheduled to land in February of 2021.
Research Options
Geochemistry;
Geology;
Research Areas
Chemical Petrology;
Environmental Geochemistry;
Extraterrestrial Geochemistry/Cosmochemistry;
Stable Isotope Geochemistry;
Publications
- McSween, Harry Y.;Hamilton, Victoria E. et al. (2025) Perspectives on Mars Sample Return: A critical resource for planetary science and explorationProceedings of the National Academy of Sciences
- McCubbin, Francis M.;Farley, Kenneth A. et al. (2025) Mars Sample Return: From collection to curation of samples from a habitable worldProceedings of the National Academy of Sciences
- Herd, Christopher D. K.;Bosak, Tanja et al. (2025) Sampling Mars: Geologic context and preliminary characterization of samples collected by the NASA Mars 2020 Perseverance Rover MissionProceedings of the National Academy of Sciences
- Scheller, Eva L.;Bosak, Tanja et al. (2024) Inorganic interpretation of luminescent materials encountered by the Perseverance rover on MarsScience Advances
- Farley, Kenneth A.;Treffkorn, J. et al. (2024) The δ¹⁸O contrast between bulk goethite and water extracted from it does not reliably reveal goethite growth temperatureChemical Geology
- Farley, K. A.;Monteiro, H. B. et al. (2024) Dehydration of goethite during vacuum step-heating and implications for he retentivity characterizationChemical Geology
- Conceição, Fabiano T.;Vasconcelos, Paulo M. et al. (2024) ⁴⁰Ar/³⁹Ar and (U-Th)/He constraints on emplacement, exhumation, and weathering of alkaline-carbonatite complexes in the Alto Paranaíba Igneous Province (APIP), BrazilGondwana Research
- Caravaca, G.;Dromart, G. et al. (2024) Depositional Facies and Sequence Stratigraphy of Kodiak Butte, Western Delta of Jezero Crater, MarsJournal of Geophysical Research: Planets
- Montanari, A.;Farley, K. et al. (2024) Cosmogenic ³He anomaly K1 vs. the early Campanian isotopic event (ECE) as recorded in pelagic limestones of the Umbria-Marche succession (Italy)Geological Society of America Bulletin
- Kronyak, Rachel E.;Kruger, Andrew W. et al. (2024) Development and Execution of the Mars 2020 Perseverance Rover's Sampling Strategy
- Weiss, Benjamin P.;Mansbach, Elias N. et al. (2024) Oriented Bedrock Samples Drilled by the Perseverance Rover on MarsEarth and Space Science
- Sun, Vivian Z.;Sholes, Steven et al. (2024) Evolution of the Mars 2020 Perseverance Rover's Strategic Planning Process
- Osterhout, Jeffrey T.;Farley, Kenneth A. et al. (2024) Helium Leak Rate Measurements of Flight-like Mars 2020 Sample TubesAstrobiology
- De Campos, Daniela S.;Monteiro, Hevelyn S. et al. (2023) A new model of bauxitization in quartzitic landscapes: A case study from the Southern Espinhaço Range (Brazil)Earth Surface Processes and Landforms
- Horton, F.;Asimow, P. D. et al. (2023) Highest terrestial ³He/⁴He credibly from the coreNature
- Sharma, Sunanda;Roppel, Ryan D. et al. (2023) Diverse organic-mineral associations in Jezero crater, MarsNature
- Swindle, Carl;Clark, Doug et al. (2023) Helium isotope evidence for mixing of mantle-derived fluids and deeply penetrating surface waters in an obducted peridotite massifGeochimica et Cosmochimica Acta
- Scheller, Eva L.;Razzell Hollis, Joseph et al. (2022) Aqueous alteration processes in Jezero crater, Mars—implications for organic geochemistryScience
- Farley, K. A.;Stack, K. M. et al. (2022) Aqueously altered igneous rocks sampled on the floor of Jezero crater, MarsScience
- Liu, Y.;Tice, M. M. et al. (2022) An olivine cumulate outcrop on the floor of Jezero crater, MarsScience
- Monteiro, H. S.;Vasconcelos, P. M. et al. (2022) Long-term vegetation-induced goethite and hematite dissolution-reprecipitation along the Brazilian Atlantic marginPalaeogeography, Palaeoclimatology, Palaeoecology
- Cox, Stephen E.;Miller, Hayden B. D. et al. (2022) Short communication: Mechanism and prevention of irreversible trapping of atmospheric He during mineral crushingGeochronology
- Maurice, S.;Chide, B. et al. (2022) In situ recording of Mars soundscapeNature
- Herd, Christopher;Bosak, Tanja et al. (2022) The Notional Plan for Sample Collections by the Perseverance Rover for Mars Sample Return
- Benites, Mariana;Hein, James R. et al. (2022) Geochemical insights into formation of enigmatic ironstones from Rio Grande rise, South Atlantic OceanMarine Geology
Ge 217. Radiogenic Isotopes Seminar.
6 units (3-0-3); third term, 2023-24.
Prerequisites: Ge 140 b or permission of instructor.
The course deals with advanced topics in radiogenic isotope geochemistry and builds on Ge 140 b, addressing unconventional applications of radioisotopes as well as treating several conventional radiogenic systems in more detail. Topics to be covered will be guided by class interests.
Given in alternate years; offered 2023-24.
Instructor: Farley
Instructor: Farley
Ge 217. Radiogenic Isotopes Seminar.
6 units (3-0-3); third term, 2022-23.
Prerequisites: Ge 140 b or permission of instructor.
The course deals with advanced topics in radiogenic isotope geochemistry and builds on Ge 140 b, addressing unconventional applications of radioisotopes as well as treating several conventional radiogenic systems in more detail. Topics to be covered will be guided by class interests.
Given in alternate years; not offered 2022-23.
Instructor: Farley
Instructor: Farley