Image:LIRM anomaly with archaeological hearths.jpg

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Description

Lightning induced remanent magnetization (LIRM) anomaly detected during a magnetic field gradient survey of an archaeological site in Wyoming (USA). The LIRM anomaly was initially interpreted as a possible archaeological feature, however excavations failed to identify a plausible source of the anomaly. Subsequent analysis of soil samples from the anomaly identified a very strong isothermal remanent magnetization that had been induced during a lightning strike. Prehistoric hearth/ovens also appear in the image as small circular magnetic anomalies.
Source

http://www.archaeophysics.com/pubs/LIRM.html
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Pöhönen (talk)
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Date/TimeDimensionsUserComment
current14:24, 18 March 2008311×452 (81 KB)Pöhönen (Talk | contribs) (Lightning induced remanent magnetization (LIRM) anomaly detected during a magnetic field gradient survey of an archaeological site located in Wyoming (USA). Prehistoric hearths/ovens also appear in the image as small circular magnetic highs.)
14:17, 18 March 2008311×452 (81 KB)Pöhönen (Talk | contribs) ({{Information |Description=Lightning induced remanent magnetization (LIRM) anomaly detected during a magnetic field gradient survey of an archaeological site in Wyoming (USA). Prehistoric hearth/ovens are also visible in the image as small circular magne)

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