Cailey and Nicole (Aikin) joined the Grand Canyon Field Forum's Basement Rock focused field trip in mid September. We motored down the Colorado River from Lee's Ferry to Pearce Ferry (over 280 miles along the river) sampling, studying, and learning about the Precambrian basement rocks exposed in the base of the Grand Canyon. These rocks are a mix of supracrustal pelitic, rhyolitic, and mafic schists, and granites, tonalites, gabbros, migmatites, and pegmatites. We're intersted in how evolving pressure, temperature, deformation, melt production and emplacement, and fluid infiltration influence the evolving strength (rheology) of the mid crust. Stay tuned for lots of work on these beautiful rocks. And just to be clear, we had a permit to collect geologic samples from the National Park Service. This trip was run by Karl Karlstrom at UNM and Mike Williams at UMass. Lots of incredible collaboration build on the river and science discussions had.
Check out this recent post from the EGU Geodynamics blog featuring the work of Adam Holt and Cailey Condit on subduction zone thermal structure!
This invited post describes our recent paper modeling the evolution of a subduction zone's thermal structure and the impact this process has on dehydration of subducting oceanic lithosphere.
From 8/15-8/20 Cailey, Peter, and incoming NSF Postdoc Will Hoover got to go collect rocks and learn subduction-y things on Santa Catalina Island, CA. We were joined by Justine Grabiec, a new PhD student at USC working with Emily Cooperdock, and Prof. John Platt. The rocks were beautiful, the foxes were adorable, and the buffalo mainly stayed to themselves.