Edward W Marshall
I am a high-temperature geochemist studying the Colorado Plateau lithospheric mantle. I use stable isotopes (O,H), radiogenic isotopes (Sr, Nd, Hf, Os), nominally anhydrous mineral water contents, and platinum group element concentrations as my tools to learn more about the mantle. I use these techniques to learn about the lithospheric mantle and make inferences about the construction of Laurentia, elemental cycling within subduction zones, changes to continent stability, and mantle processes.
To collect these different sets of data, I spend a lot of time in the lab. I am proficient in laser fluorination analysis for oxygen isotopes, SIMS analysis of nominally anhydrous mineral water contents, clean lab chemical separation methods for analysis of the Rb-Sr, Sm-Nd, Lu-Hf and Re-Os radiogenic systems, laser ICP-MS analysis of trace elements, and electron microprobe analysis of major elements.
My other academic interests include the geology of the Philadelphia area, anorthosite genesis, and moon formation.
Goldschmidt Conference travel Grant - Geochemical Society (2016)
R.L. Folk & E.F. McBride Petrography Contest- 1st place - Jackson School of Geosciences (2015)
GSA Graduate Student Grant - Geological Society of America (2014)
GSA Graduate Student Grant - Geological Society of America (2013)