 Ramba uchinyora ndima iyi - Kutanga kubudisa pamwe chete muna 1967, George Plafker, Rubin, uye vavanoshanda navo vakaita basa romumunda rakaoma pashure pokudengenyeka kwepasi kweRichter 9.2 muAlaska muna 1964, yakafukidza mazana emakiromita emhenderekedzo yeAlaska muzvikepe zvidiki, maherikoputa, uye ndege dzakashongedzerwa nemvura mushure mekudengenyeka kwenyika kwa1964 kwakabatsira kuvhura munda mutsva we megathrust kudengenyeka kwenyika, iyo yakashandisa kucherechedzwa kwekuiswa uye kufambidzana kwezvisikwa zvepakati pezvisikwa zvakaita seacorn barnacles, mussels uye rockweed kuti vaone huwandu hweshanduko yakatwasuka muvhu zvine chekuita nemwero wegungwa padyo nenzvimbo dzekudonha. Plafker nevamwe vake vakagumisa kuti kudengenyeka kukuru kweAlaska kwakakonzerwa nokuputsika kwakadzika kwakadzika munharaunda inodzikira apo ndiro yePacific tectonic inosundira kuchamhembe pasi peplate yeNorth America. Nhoroondo dzokutanga dzokudengenyeka kweAlaska dzakanga dzakaratidza kuti kudengenyeka kwacho kwakaitika sokutsvedza pamwe chete nechikanganiso chakatwasuka, sezvo ndiro yePacific yakatenderera inopesana nekona yewachi pamusoro peplate yeNorth America. Iyi fundo dzaPlafker, Rubin navashandi pamwe navo dzaiva ufakazi hunokosha zvikuru hwokuvapo kwenzira dzokupinza mvura pasi mukati mehurukuro dzapakuvamba dzeplate tectonics. Ona pfupiso yezvakaitika uye nhoroondo. 