Paleogene stratigraphy and sea-level history of the North Carolina Coastal Plain: global coastal onlap and tectonics (original) (raw)

Coastal onlap of Paleogene depositional sequences, mapped by stage, and compared to curves of global coastal onlap and eustasy facilitate differentiation of the effects of local uplift and subsidence from eustasy on the Onslow and Albemarle Blocks about the Neuse Hinge in North Carolina. Differential uplift and subsidence of these blocks has controlled the strata1 geometries and patterns of relative coastal onlap on each block. Potential mechanisms to produce the uplift and subsidence include episodic flexural deformation resulting from sediment loading in the Salisbury Embayment, and horizontal compressional deformation resulting from plate motion.