Title

Postimpact Deformation Associated with the Late Eocene Chesapeake Bay Impact Structure in Southeastern Virginia

Document Type

Article

Publication Date

1998

Digital Object Identifier (DOI)

https://doi.org/10.1130/0091-7613(1998)​026<0507:PDAWTL>​2.3.CO;2

Abstract

Upper Cenozoic strata covering the Chesapeake Bay impact structure in southeastern Virginia record intermittent differential movement around its buried rim. Miocene strata in a graben detected by seismic surveys on the York River exhibit variable thickness and are deformed above the crater rim. Fan-like interformational and intraformational angular unconformities within Pliocene-Pleistocene strata, which strike parallel to the crater rim and dip 2°-3° away from the crater center, indicate that deformation and deposition were synchronous. Concentric, large-scale crossbedded, bioclastic sand bodies of Pliocene age within ∼20 km of the buried crater rim formed on offshore shoals, presumably as subsiding listric slump blocks rotated near the crater rim.

Was this content written or created while at USF?

Yes

Citation / Publisher Attribution

Geology, v. 26, no. 6, p. 507-510

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