Fig. 5From: Crisis hazard assessment for snow-related lahars from an unforeseen new vent eruption: the 2018 eruption of Kusatsu-Shirane volcano, JapanPhotomicrograph (binocular) of primary tephra (KSs-02); a aggregates of mineral grains and lithic fragments coated by mud, b washed samples (mud fraction removed) consisting of mineral grains and lithic (some hydrothermally altered) fragments. Inset figure shows fine grained pyrite coherent with a white-colored lithic fragmentBack to article page