The light tan fan is composed of 2008 eruption deposits. The gray sand in the foreground is beach which began forming immediately after the eruption. The bluff to the right of, and behind the tan fan is cut into Luna pyroclastic deposits and marks the pre-eruption shoreline. The southernmost exposure of Peregrine glaciovolcanic deposits is immediately to the left of the image. See http://doi.org/10.14509/29718 for additional details.
Image courtesy of the AVO/ADGGS.