Abstract
Within the Pennsylvanian Atoka Formation of Oklahoma, strata in the frontal Ouachita belt deposited by east-flowing turbidity currents yield the same ɛNd values as strata in more interior parts of the Ouachita orogen deposited by west-flowing turbidity currents. The congruence of ɛNd values throughout the Atoka Formation is consistent with widespread Paleozoic dispersal and recycling of detritus from the evolving Appalachian orogen across the surface of the Laurentian craton and along its margins. Sandstone in the olistostromal Johns Valley Shale underlying the Atoka Formation yields a similar ɛNd value, reflective of reworking Appalachian-derived sediment from the Paleozoic Oklahoma shelf succession.
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