Sedimentology, phenocryst chemistry, and age - Miocene "blue tuff': Sites 794 and 796, Japan Sea

Abstract

There is no justification for stratigraphic correlation of widespread, Miocene, blue to blue-gray bentonitic tuff and tuffaceous sandstones nor the interpretation that these strata are indicative of regional, explosive submarine volcanism generally related to rifting and formation of the Japan Sea. Rather, these reworked pyroclastic strata of intermediate composition were deposited over a protracted 6-8 my period in association with widespread, subduction-related submarine to subaerial volcanism in the Japan Sea backarc basin. -from Authors