Item talk:Q257462

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   "@type": "Article",
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   "name": "Impact effects and regional tectonic insights: Backstripping the Chesapeake Bay impact structure",
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       "value": "10.1130/G24408A.1",
       "url": "https://doi.org/10.1130/G24408A.1"
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     "@type": "Periodical",
     "name": "Geology",
     "volumeNumber": "36",
     "issueNumber": "4"
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   "datePublished": "2008",
   "dateModified": "2020-03-27",
   "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.\u00a0",
   "description": "4 p.",
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     "name": "Geological Society of America"
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       "name": "Edwards, Lucy E. leedward@usgs.gov",
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       "name": "Powars, David S. dspowars@usgs.gov",
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