We present data for 283 olivine hosts of melt inclusions from central-eastern Aleutian volcanoes. The samples were collected during joint GeoPRISMS-DCO-AVO field campaigns in 2015 and 2016 (PIs: Roman, Plank, Hauri). All melt inclusion hosts were found as loose olivine crystals in the 0.5-2 mm ash size fraction of tephra samples. Melt inclusions were doubly polished. Melt inclusion data are presented separately. Here we present data for the olivine hosts. Analyses were generally conducted <10 microns and <50 microns from the nearest edge of the melt inclusion. Anlyses were conducted on a Cameca SX-100 at the American Museum of Natural History using standard conditions (1 micron beam, 15 keV, 20nA, and 20 s on peak time). The objectives of the work are to understand magmatic processes and characterize along-arc geochemical trends in the Aleutians. Melt inclusion and bulk rock data from these samples samples are also published in Earthchem. A report that includes more information on the samples presented here can be found online: Plank, T., Rasmussen, D., Stelling, P., Roman, D. 2020. Field Report for the Collection of Mafic Tephra from the Aleutians Islands between Unimak and the Island of Four Mountains (Alaska, USA), Version 1.0. Interdisciplinary Earth Data Alliance (IEDA).
Rasmussen, D.J., (2019). "The Aleutian arc through and through: Subduction dynamics and the generation, storage, and eruption of hydrous magmas." Diss. Columbia University; Werner, C., Rasmussen, D. J., Plank, T., Kelly, P. J., Kern, C., Lopez, T., ... & Lyons, J. (2020).
Linking subsurface to surface using gas emission and melt inclusion data at Mount Cleveland volcano, Alaska. Geochemistry, Geophysics, Geosystems, 21(7), e2019GC008882; Rasmussen, D. J., Plank, T. A., Roman, D. C., Power, J. A., Bodnar, R. J., & Hauri, E. H. (2018).
When does eruption run-up begin? Multidisciplinary insight from the 1999 eruption of Shishaldin volcano. Earth and Planetary Science Letters, 486, 1-14; Plank, T., Rasmussen, D., Stelling, P., Roman, D. (2020).
"Field Report for the Collection of Mafic Tephra from the Aleutians Islands between Unimak and the Island of Four Mountains (Alaska, USA), Version 1.0." Interdisciplinary Earth Data Alliance (IEDA)
User Contributed Keyword(s):
Melt inclusion, olivine, host, magma, volcano, volatile