Visiting Assistant Professor
Office: 302C Davis Hall
B.S., University of Michigan, 2004
M.S., Fresno State University, 2007
Ph.D., Utah State University, 2012
Volcanic processes and igneous geochemistry
I am interested in volcanic processes that span from the mantle to
surface. This includes the chemical composition of ultramafic and mafic
rocks. I focus on the major element, trace element, and isotopic
composition of magmas erupted in different tectonic settings because
they reflect differences in mantle composition, melting processes, and
subsequent magma evolution. This work is aided by applying standard and
innovative algorithms to model geochemical variations. These processes
are crucial to our understanding of how our Earth evolves chemically.
My current research examines the construction and life cycle of oceanic and continental lithosphere in the US Cordillera by employing radiogenic isotopes and major and trace elements. This investigation includes the Coast Range ophiolite in California and Oregon, and the Snake River Plain in Idaho. Future research will investigate the “subduction factory” processes of the El Salvador volcanic arc.
Shervais JW, Jean MM (2012) Inside the Subduction Factory: Modeling fluid mobile trace element additions to the mantle wedge above a subduction zone. Geochimica et Cosmochimica Acta; in press
Putirka KD, Jean MM, Cousens B, Sharma R, Torrez G, Carlson C (2012) Cenozoic Volcanism in the Sierra Nevada and Walker Lane, California, and a New Model for Lithosphere Degradation. Geosphere, v. 8, no. 2, p. 265–291.
Jean MM, Shervais JW, Choi SH, Mukasa SB (2010) Melt Extraction and Melt Refertilization in Mantle Peridotite of the Coast Range Ophiolite: An LA-ICP-MS Study. Contributions to Mineralogy and Petrology, v. 159, no. 1, p. 113–136.
Kesler SE, Reich M, Jean MM (2007) Geochemistry of fluid inclusion brines from Earth’s oldest Mississippi Valley-type (MVT) deposits, Transvaal Supergroup, South Africa. Chemical Geology, v. 237, p. 274–288.