Bulk rock data for the central-eastern Aleutian volcanoes

We present major and trace element data for 82 rock samples from central-eastern Aleutian volcanoes. Most samples were collected during joint GeoPRISMS-DCO-AVO field campaigns in 2015 and 2016 (PIs: Roman, Plank, Hauri). The samples were crushed in plastic ziploc bags using a hammer, cleaned with deionized water, and 1-10 mm fragments were powdered in a alumina-ceramic ball mill. Rock digestion followed the procedure of Kelley et al. (2003). Trace element analyses were conducted by ICP-MS using a PQ ExCell at Lamont-Doherty Earth Observatory (LDEO) following the methods of Wade et al. (2005). Major element analyses were conducted using an Agilent 700-series ICP-ES at LDEO following the methods of Wade et al. (2005). SiO2 is calculated by difference. LOI data were not collected for 26 samples. In those cases, a value of 1 wt% was assumed. The objectives of the work are to understand magmatic processes and characterize along-arc geochemical trends in the Aleutians. Melt inclusion and host olivine 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).