In southeastern Oklahoma the outcropping rocks and structures of the Ouachita Mountains are overlapped by Cretaceous rocks along a line which extends approximately east-west through McCurtain, Pushmataha, Atoka, and Johnston counties; south of this line the Ouachita belt is concealed. It is particularly unfortunate that the Cretaceous blanket obscures the junction of the Ouachita belt and the Arbuckle element because it is in this zone of extreme structural complexity that the continuity of the Ouachita belt is lost. With one exception, none of the major structures that have been mapped in the Ouachita Mountains can be projected with confidence into...

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