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 |
|---|---|
| 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 |