Abstract

Georgia Coastal Plain sediments dip and thicken east and southeast, are of Pleistocene to Early Cretaceous age, and lie on crystalline basement with irregular but generally seaward-dipping contact. Nine reversed refraction profiles shot on the Continental Shelf off central Georgia show four layers with a gentle east dip representing the sea-floor layer, a thin Oligocene limestone, a lower Eocene layer, and the pre-Cretaceous basement. An embayment under the Coastal Plain, opened south and southeast with the east edge along the present coast, developed during early Eocene and continued as a depositional basin intermittently through Miocene.

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