Image of the Month Addendum!

We received some great feedback from geologist Stephen Slaughter with reference to the March Image of the Month (showing a honeycomb-like sedimentary structure on Sucia Island in San Juan County) that we want to share! Stephen wishes to highlight the work of George Mustoe (WWU) in describing these features, saying “[Mustoe] attributes the honeycomb shape to the result of microscopic algae inhabiting the rock surface and ‘hardening’ the delicate honeycomb surface.” The resulting reinforcement, in addition to the wave-splash process of cyclic salt crystal accumulation, expansion, and desiccation, likely forms and preserves these remarkable weathering structures in the Chuckanut Formation. Stephen also points us to Mustoe’s 1982 paper on the topic.