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Letter. Lightning-induced shock lamellae in quartz

  • Reto Gieré EMAIL logo , Wolfhard Wimmenauer , Hiltrud Müller-Sigmund , Richard Wirth , Gregory R. Lumpkin and Katherine L. Smith
Published/Copyright: June 30, 2015
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Abstract

Using transmission electron microscopy we show that planar deformation lamellae occur within quartz in the substrate of a rock fulgurite, i.e., a lightning-derived glass. These lamellae exist only in a narrow zone adjacent to the quartz/fulgurite boundary and are comparable to planar deformation features (“shock lamellae”) caused by hypervelocity impacts of extra-terrestrial objects. Our observations strongly suggest that the lamellae described here have been formed as a result of the fulgurite-producing lightning strike. This event must have generated a transient pressure pulse, whose magnitude, however, is uncertain at this stage.

Received: 2014-10-9
Accepted: 2015-3-28
Published Online: 2015-6-30
Published in Print: 2015-7-1

© 2015 by Walter de Gruyter Berlin/Boston

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