Similar thin layering appears in the Tapeats Sandstones of the Grand Canyon. Conventional wisdom says they were formed by slow and continuous sedimentation over long ages. Both gas-charged slurries which formed the MSH strata and water-charged slurries which formed the Tapeats strata follow the same laws of physics.
Safu nyembamba kama hiyo inajitokeza katika mawe ya mchanga ya Bonde Kuu. Makubaliano ya hekima yaonyesha kwamba yaliwekezewa pole pole tena baada ya muda mwingi.Mchanganyiko wa gesi na maji iliyofanyika katika safu ya Mlima Mtf Helens-MSH iliendeleza safu ya mawe ya mchanga iliyoambatana na sheria ya elimu ya vitu vyote.Volkeno imeonyesha maumbile kama haya kuwa kwa haraka.Mafuriko ya kidunia yangalifanya mawe ya mchanga kwa muda mfupi.