Katie Kumamoto’s two part study of shear zones in the Josephine Peridotite is now published in AGU journals: Kumamoto, K.M., J.M. Warren, and E.H. Hauri, 2019. Evolution of the Josephine Peridotite shear zones: 1. Compositional variation and shear initiation, Geochemistry, Geophysics, Geosystems, 20, 5765-5785, doi:10.1029/2019GC008399. Kumamoto, K.M.†, J.M. Warren, and L.N. Hansen, 2019. Evolution of […]
UD Undergraduate Raphael Affinito spent part of last summer looking at deformation fabrics in melt-bearing peridotites from the Josephine Peridotite in Oregon. He is presenting the results of his summer research in the AGU Virtual Poster Showcase this fall. You can view it here or download the poster here.
The Mantle Processes Group spent 10 days in southwest Oregon and northern California for fieldwork in the Josephine Peridotite and Trinity Ophiolite. Colleagues from Brown University, Lamont Doherty Earth Observatory, University of Auckland, and University of Oregon joined us for parts of the trip. It was good to be back in the mantle!
We returned to the Josephine Peridotite for more sampling of mantle shear zones. In addition to graduate students Nik Deems and Katie Kumamoto, Stanford undergraduate EKela Autry joined us to get data for her summer project. We were also joined by Eric Mittelstaedt and Kate Kaminski from the University of Idaho for Kate’s project on […]
Three days of sampling in the Josephine Peridotite were not to be this June.
In June we headed up to the Josephine for 4 days of fieldwork on Fresno Bench. This was our first spring foray into the Siskiyou and we had been warned that the weather could be bad. We were fortunate to encounter nothing worse than some clouds and high wind – and more wildflowers than on […]
In late August/early September, we spent two weeks in northern California and southeastern Oregon, looking at ultramafics in the Trinity Ophiolite (CA) and Josephine Peridotite (OR). This trip was part of a Stanford field class, GES 190: Advanced Field Methods, and the students blogged about their experience here.