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    "On the suitability of refractory bricks from a mediaeval brass melting & working site near Dinant (Belgium) as geomagnetic field recorders"

    Authors
    Hus, J.
    Geeraerts, R.
    Plumier, J.
    Discipline
    Earth and related Environmental sciences
    Subject
    Archaeomagnetism
    Archaeomagnetic dating
    Belgium
    Brass kiln
    Magnetic refraction
    Refractory bricks
    Audience
    General Public
    Scientific
    Date
    2004
    Publisher
    IRM
    KMI
    RMI
    Metadata
    Show full item record
    Description
    Directional field archaeomagnetic data from two oval shaped kilns, of which still one was lined with refractory bricks, unearthed in a brass melting and working site in Bouvignes-sur-Meuse in Belgium, confirm the archaeologic dating as 14–15th century A.D. for the main site activities. The archaeomagnetic dates, obtained using reference secular variation curves of the geomagnetic field direction for France and Great Britain, lead to better time constraints for the cessation of kiln operations. Refractory bricks (firebricks) that are used for their chemical and thermal properties, and in particular for their resistance to high temperatures and temperature changes, are not unusual in metal melting and working sites. The firebricks from the examined site are coarse-grained and very porous inside but possess a very stable remanent magnetisation and revealed to be suitable magnetic field recorders. Although the firebricks have a single-component remanent magnetization, non-random deviations in remanence direction in function of the relative azimuth from the centre of the kiln or with the position of the bricks in the kiln wall, were observed. Several hypotheses for the origin of the deviations were considered: anisotropy, refraction, magnetic interaction, magnetic field distortion and the presence of a local disturbing magnetic source.
    Citation
    Hus, J.; Geeraerts, R.; Plumier, J. (2004). "On the suitability of refractory bricks from a mediaeval brass melting & working site near Dinant (Belgium) as geomagnetic field recorders". , Issue Physics of the Earth and Planetary Interiors, pp. 103-116, IRM,
    Identifiers
    uri: https://orfeo.belnet.be/handle/internal/8645
    Type
    Article
    Peer-Review
    Not pertinent
    Language
    eng
    Links
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