13" wide x 1.75" high
Center outward: "ALL" layers of mud from north, south, east, west framed by Kane Fracture Zone, a spreading mid-ocean ridge framed by "snowball Earth" (Namibian rock) framed by a subducting Pacific plate". How many stories can one piece point to? The Pacific plate material closest to the rim is from Costa Rican Accretionary Prism where plates collide and friction makes heat--enough to melt the sediment. Ask geologists . . . .
Rim and green sediment are glazes assembled from refined materials.