Early Carboniferous Transgression on a Passive Continental Margin: Deposition of the Kekiktuk Conglomerate, Northeastern Brooks Range, Alaska

Supplemental Material: Detrital zircon ages from upper Paleozoic–Triassic clastic strata on St. Lawrence Island, Alaska: An enigmatic component of the Arctic Alaska–Chukotka microplate

“…Stratigraphic relations across the older unconformity show that the penetrative deformation (Romanzoff orogeny) occurred during early Devonian time (Lane, 2007). Across most of northern Alaska, the (younger) pre-Mississippian unconformity is overlain by a thin sequence of mainly fluvial conglomerate and sandstone, which is called the Kekiktuk Conglomerate (e.g., Brosge et al, 1962;LePain et al, 1994). These strata are widespread across northern Alaska and represent the onset of a latest Devonian to Jurassic south-facing passive-margin sequence.…”