Scientists are using two types of samples to better study hydrothermal fluid and chemistry interactions on Surtsey. One sample is a volcanic glass with the same composition as Surtsey. The other is olivine, which is a target for studying microbial-rock interaction. A set of four samples (two of each type) are placed above and below a temperature sensor at five different depths. This will give scientists an idea of changing hydrothermal and microbial interactions at varying depths within Surtsey.
