Fig. 2

Summary of olivine compositions from 2008 Llaima scoria deposits. a Rim to core electron microprobe %Fo traverses, that show mainly reverse zoning and the presence of “shoulders” in some crystals. b–d histograms of compositions of cores (b), rims (c), shoulders (d). The black line is a kernel density function, the dashed line are the data from older Llaima eruptions^25,27. See text for more discussion