6" wide x 2.5" high
The fine sediment was sampled from a wedge-shaped seafloor intersection of plates -- on the bowl it contracted as it dried and then peeled off the clay bowl; it did it more during firing. In the kiln the sediment curled because of tension between the sediment and the clay and also in response to the porosity and shape of the bowl. The bowl is a record of the material's self-sorting as it relaxed, melted and fused onto the clay. A kind of literacy develops when you care to observe and speculate.
Costa Rican Accretionary Prism where plates collide, scrape, yield and friction makes heat. Lavender glaze assembled from refined materials.