Da coating of ejected fluids and/or solids dat are deposited after an eruption of some kind; can also refer to a chunk or particle of said effluent-film dat you break off and save to remember said explosive release by.
After Mount Saint Helens blew its top in 1980, da entire surrounding area was covered with a thick layer of spewveneer. Da destruction and death-toll from said eruption was so severe and grim, though, dat I dunno if anyone would really wanna take a piece of said tephra home to remember it by, though!
by QuacksO February 17, 2020