Graham Pearson, University of Alberta, Edmonton, Canada.Citation for Mary R. Reid
Mary Reid gets the Bowen Award on her imaginative and revolutionary application of zircon geochronology for understanding active silicic magma systems. Her 1997 paper in world and Planetary Science Letters, “Prolonged residence times for the youngest rhyolites connected with longer Valley caldera: 230 Th 238 U ion microprobe dating of young zircons,” launched a fresh section of inquiry into magmatic procedures, presenting both the analytical and framework that is intellectual performing and interpreting the geochronology of young zircon by additional ion mass spectrometry. The groundbreaking and unique insights of the paper shifted our comprehension of the prices and operations taking part in magma storage space, recharge, and eruption.
Mary used U–Th disequilibrium dating to exhibit that zircons included within the merchandise of just one eruption have actually many years that span tens to a huge selection of kiloyears, implying a complex and protracted preeruption history of subvolcanic evolution that is magmatic. Had been the zircons recording the residence time of melt rich and magma that is potentially eruptibleher preferred interpretation during those times), or had been zircons being recycled from mostly solidified components of a much broader magma reservoir? These concerns in change spurred efforts because of the modeling community to explore the conditions expected to keep melt rich, silicic magma during these timescales and synchronous efforts to comprehend the procedures and timescales of silicic melt segregation from crystal mush. Mary’s work subsequent to the 1997 paper, both on the very own along with her pupils, on longer Valley, Yellowstone, plus the Youngest Toba Tuff, represent collectively a trip de force of insights in to the procedure of big, hazardous silicic magma systems.