Will Hoover - "Chemo-mechanical evolution of a slow slipping subduction interface"
Abstract: Episodic tremor and slow slip is an enigmatic component of the seismic cycle that occurs at the fluid-rich subduction interface down-dip of the seismogenic zone. Fluid-driven chemical reactions in this interface produce talc-, chlorite- and amphibole--rich rocks that modify its rheology, however we know little about how they influence episodic tremor and slow slip. I will reconstruct the evolution of an exhumed subduction interface shear zone from the depths of modern episodic tremor and slow slip, and show that talc-rich rocks hosted slow slip deformation and should not be overlooked in models of the seismic cycle. 

Tsai-Wei Chen - "Temperatures of Vein Formation Associated with Plate Interface Deformation Constrained by Oxygen and Clumped Isotope Thermometry"
Abstract: In this talk, I will begin by introducing my research on quartz-calcite veins in two ancient accretionary prisms, the Shimanto belt of Japan and the Kodiak accretionary complex of Alaska. The temperature records derived from veins imply a fluid-rich zone at 100-250°C along plate interfaces, favored for vein formation, while 250-350°C marks a temperature regime of fluid-unsaturated condition resulting from clay hydration reactions, evident by reduced vein formation. Next, I will share preliminary optical observations of veins in the Olympic subduction complex. Their host rock temperature records of 230-310°C will provide additional data to validate the findings from the other two complexes.

Fabian Klenner - Toward a Better Understanding of Ice Grain Formation on Saturn’s Moon Enceladus
Abstract: Saturn’s icy moon Enceladus is a prime target for astrobiology investigations. The moon emits into space a plume of gas and ice grains formed from a subsurface water ocean. The composition of the emitted material can be analyzed in some detail, but only little is known about the processes that occur upon formation of the icy material. In this talk, I will present my research which is to better understand the formation of ice grains on Enceladus through a combination of laboratory experiments and modeling efforts.