Tephra layers preserved at the summit of Kīlauea

Tephra layers preserved at the summit of Kīlauea from at least three different eruptions. Deposits below the top of the scale are predominantly juvenile and deposits above it containing many lithics. Notice the larger size of the yellow pumice clasts compared to the much denser and finer grey lapilli and ash surrounding them from 7 to 18 on the scale. The scale is in cm. Photo: Jo Schmith 11-25-2020 .