Impact effects and regional tectonic insights: Backstripping the Chesapeake Bay impact structure
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Abstract
The Chesapeake Bay impact structure is a ca. 35.4 Ma crater located on the eastern seaboard of North America. Deposition returned to normal shortly after impact, resulting in a unique record of both impact-related and subsequent passive margin sedimentation. We use backstripping to show that the impact strongly affected sedimentation for 7 m.y. through impact-derived crustal-scale tectonics, dominated by the effects of sediment compaction and the introduction and subsequent removal of a negative thermal anomaly instead of the expected positive thermal anomaly. After this, the area was dominated by passive margin thermal subsidence overprinted by periods of regional-scale vertical tectonic events, on the order of tens of meters. Loading due to prograding sediment bodies may have generated these events.
Study Area
Publication type | Article |
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Publication Subtype | Journal Article |
Title | Impact effects and regional tectonic insights: Backstripping the Chesapeake Bay impact structure |
Series title | Geology |
DOI | 10.1130/G24408A.1 |
Volume | 36 |
Issue | 4 |
Year Published | 2008 |
Language | English |
Publisher | Geological Society of America |
Contributing office(s) | Eastern Geology and Paleoclimate Science Center, Florence Bascom Geoscience Center |
Description | 4 p. |
First page | 327 |
Last page | 330 |
Country | United States |
Other Geospatial | Chesapeake Bay |
Google Analytic Metrics | Metrics page |