Preservation Potential of the Delaware Atlantic Coast Barrier—Backbarrier System

by Daniel F. Belknap, Univ of Maine, Orono, United States,

Document Type: Proceeding Paper

Part of: Coastal Sediments


Volumes of Delaware Atlantic barrier and shoreface lithosomes were digitized to evaluate preservation potential during transgression. Erosion during headland retreat of less than 0.5 km is sufficient to supply the observed barrier lithosome volume. Offshore sands are at least 50 times this volume. Preservation potential of barrier stratigraphy is low, sediments are recycled onshore or lost offshore and alongshore during transgression. Preservation of backbarrier stratigraphy is controlled by depth of pre-Holocene paleovalleys.

Subject Headings: Geology | Gates (hydraulic) | Barrier islands | Erosion | Sediment | Sand (hydraulic) | Sandy soils | Recycling | Delaware | United States

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