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Deep Drilling into the Chesapeake Bay Impact Structure

Dates

Year
2008

Citation

Gohn, G S, Koeberl, C, Miller, K G, Reimold, W U, Browning, J V, Cockell, C S, Horton, J W, Kenkmann, T, Kulpecz, A A, Powars, D S, Sanford, W E, and Voytek, M A, 2008, Deep Drilling into the Chesapeake Bay Impact Structure: Science, v. 320, iss. 5884, p. 1740-1745.

Summary

Samples from a 1.76-kilometer-deep corehole drilled near the center of the late Eocene Chesapeake Bay impact structure (Virginia, USA) reveal its geologic, hydrologic, and biologic history. We conducted stratigraphic and petrologic analyses of the cores to elucidate the timing and results of impact-melt creation and distribution, transient-cavity collapse, and ocean-water resurge. Comparison of post-impact sedimentary sequences inside and outside the structure indicates that compaction of the crater fill influenced long-term sedimentation patterns in the mid-Atlantic region. Salty connate water of the target remains in the crater fill today, where it poses a potential threat to the regional groundwater resource. Observed depth variations [...]

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  • USGS National Research Program

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Added to ScienceBase on Thu Apr 18 13:36:54 MDT 2013 by processing file <b>Hydrogeochemical and Microbiological Investigations of Radionuclides, Nutrients, and Environmental Contaminants.xml</b> in item <a href="https://www.sciencebase.gov/catalog/item/5042163ae4b04b508bfd3332">https://www.sciencebase.gov/catalog/item/5042163ae4b04b508bfd3332</a>

Additional Information

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Type Scheme Key
DOI http://sciencebase.gov/vocab/identifierScheme 10.1126/science.1158708

Citation Extension

citationTypeJournal Article
journalScience
parts
typePages
value1740-1745
typeVolume
value320
typeIssue
value5884

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