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Deep Drilling into the Chesapeake Bay Impact Structure.

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Title: Deep Drilling into the Chesapeake Bay Impact Structure.
Authors: Gohn, G. S., Koeberl, C., Miller, K. G., Reimold, W. U., Browning, J. V., Cockell, C. S., Horton Jr., J. W., Kenkmann, T., Kulpecz, A. A., Powars, D. S., Sanford, W. E., Voytek, M. A.
Source: Science (pre-March 2025). 6/27/2008, Vol. 320 Issue 5884, p1740-1745. 6p. 1 Diagram, 2 Graphs, 1 Map.
Subjects: Industrial contamination, Sedimentary structures, Sedimentology, Geology, Groundwater, Hydrology
Geographic Terms: Chesapeake Bay (Md. & Va.), Maryland, Virginia
Abstract: 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 in microbial abundance indicate a complex history of impact-related thermal sterilization and habitat modification, and subsequent post-impact repopulation. [ABSTRACT FROM AUTHOR]
Copyright of Science (pre-March 2025) is the property of American Association for the Advancement of Science and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Psychology and Behavioral Sciences Collection
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DbLabel: Psychology and Behavioral Sciences Collection
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PubType: Academic Journal
PubTypeId: academicJournal
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  Data: Deep Drilling into the Chesapeake Bay Impact Structure.
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  Data: <searchLink fieldCode="AR" term="%22Gohn%2C+G%2E+S%2E%22">Gohn, G. S.</searchLink><br /><searchLink fieldCode="AR" term="%22Koeberl%2C+C%2E%22">Koeberl, C.</searchLink><br /><searchLink fieldCode="AR" term="%22Miller%2C+K%2E+G%2E%22">Miller, K. G.</searchLink><br /><searchLink fieldCode="AR" term="%22Reimold%2C+W%2E+U%2E%22">Reimold, W. U.</searchLink><br /><searchLink fieldCode="AR" term="%22Browning%2C+J%2E+V%2E%22">Browning, J. V.</searchLink><br /><searchLink fieldCode="AR" term="%22Cockell%2C+C%2E+S%2E%22">Cockell, C. S.</searchLink><br /><searchLink fieldCode="AR" term="%22Horton+Jr%2E%2C+J%2E+W%2E%22">Horton Jr., J. W.</searchLink><br /><searchLink fieldCode="AR" term="%22Kenkmann%2C+T%2E%22">Kenkmann, T.</searchLink><br /><searchLink fieldCode="AR" term="%22Kulpecz%2C+A%2E+A%2E%22">Kulpecz, A. A.</searchLink><br /><searchLink fieldCode="AR" term="%22Powars%2C+D%2E+S%2E%22">Powars, D. S.</searchLink><br /><searchLink fieldCode="AR" term="%22Sanford%2C+W%2E+E%2E%22">Sanford, W. E.</searchLink><br /><searchLink fieldCode="AR" term="%22Voytek%2C+M%2E+A%2E%22">Voytek, M. A.</searchLink>
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  Data: <searchLink fieldCode="JN" term="%22Science+%28pre-March+2025%29%22">Science (pre-March 2025)</searchLink>. 6/27/2008, Vol. 320 Issue 5884, p1740-1745. 6p. 1 Diagram, 2 Graphs, 1 Map.
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  Data: <searchLink fieldCode="DE" term="%22Industrial+contamination%22">Industrial contamination</searchLink><br /><searchLink fieldCode="DE" term="%22Sedimentary+structures%22">Sedimentary structures</searchLink><br /><searchLink fieldCode="DE" term="%22Sedimentology%22">Sedimentology</searchLink><br /><searchLink fieldCode="DE" term="%22Geology%22">Geology</searchLink><br /><searchLink fieldCode="DE" term="%22Groundwater%22">Groundwater</searchLink><br /><searchLink fieldCode="DE" term="%22Hydrology%22">Hydrology</searchLink>
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  Data: <searchLink fieldCode="DE" term="%22Chesapeake+Bay+%28Md%2E+%26+Va%2E%29%22">Chesapeake Bay (Md. & Va.)</searchLink><br /><searchLink fieldCode="DE" term="%22Maryland%22">Maryland</searchLink><br /><searchLink fieldCode="DE" term="%22Virginia%22">Virginia</searchLink>
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  Label: Abstract
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  Data: 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 in microbial abundance indicate a complex history of impact-related thermal sterilization and habitat modification, and subsequent post-impact repopulation. [ABSTRACT FROM AUTHOR]
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  Data: <i>Copyright of Science (pre-March 2025) is the property of American Association for the Advancement of Science and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
PLink https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=pbh&AN=33219891
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        Value: 10.1126/science.1158708
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        Text: English
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      Pagination:
        PageCount: 6
        StartPage: 1740
    Subjects:
      – SubjectFull: Industrial contamination
        Type: general
      – SubjectFull: Sedimentary structures
        Type: general
      – SubjectFull: Sedimentology
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      – SubjectFull: Geology
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              Text: 6/27/2008
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