Slump-generated megachannels in the Pliocene–Pleistocene glaciomarine Yakataga Formation, Gulf of Alaska

Pliocene–Pleistocene megachannels, as much as 400 m deep and several kilometers wide, are exceptionally well exposed around the Gulf of Alaska coastal margin in glaciomarine sedimentary strata of the Yakataga Formation. In the Icy Bay region, stacked megachannels of the Yakataga Formation are filled predominantly with debris flow diamictites, crudely stratified conglomerates, and thinly bedded sandstone and mudstone turbidites. Detailed …