THE QUATERNARY STRATIGRAPHIC ARCHITECTURE OF A LOW-ACCOMMODATION, PASSIVE-MARGIN CONTINENTAL SHELF (SANTEE DELTA REGION, SOUTH CAROLINA, USA)

摘要

The Quaternary stratigraphy of the continental shelf offshore of South Carolina consists of stratigraphic units deposited in coastal-plain, shallow marine, and shelfal environments bounded by composite erosional surfaces that developed in response to numerous glacioeustatic cycles and were overprinted by regional uplift. These units are commonly distributed laterally, rather than stacked vertically, a function of the long-term low shelf gradient and the resulting lack of accommodation. Additionally, marine processes such as waves and geostrophic currents can rework both relict and modern sediments across the continental shelf.