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    Possible reasons of shock melt deficiency in the Bosumtwi drill cores

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    Author
    Artemieva, N.
    Issue Date
    2007-01-01
    Keywords
    Bosumtwi Ghana impact crater
    impact melting
    impact modeling
    impacts
    cratering
    
    Metadata
    Show full item record
    Citation
    Artemieva, N. (2007). Possible reasons of shock melt deficiency in the Bosumtwi drill cores. Meteoritics & Planetary Science, 42(4‐5), 883-894.
    Publisher
    The Meteoritical Society
    Journal
    Meteoritics & Planetary Science
    URI
    http://hdl.handle.net/10150/656278
    DOI
    10.1111/j.1945-5100.2007.tb01083.x
    Additional Links
    https://meteoritical.org/
    Abstract
    Pre-drilling numerical modeling of the Bosumtwi impact event predicted a 200 m thick coherent melt layer, as well as abundant highly shocked target material within the central part of the crater structure. However, these predictions are in disagreement with data from drill core obtained in 2004-2005. Here I provide a brief overview of previous results and discuss possible reasons behind melt deficiency, such as specific impact scenarios (low impact velocity and/or low impact angle), and specific target properties (different composition, high porosity, high content of volatiles). I conclude that the most likely explanation is the dispersion of impactites due to the vaporization of pore water, which was not included in the original numerical model.
    Type
    Article
    text
    Language
    en
    ISSN
    1945-5100
    ae974a485f413a2113503eed53cd6c53
    10.1111/j.1945-5100.2007.tb01083.x
    Scopus Count
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    Meteoritics & Planetary Science, Volume 42, Number 4-5 (2007)

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