Fulgurite morphology: a classification scheme and clues to formation

@article{Pasek2012FulguriteMA,
  title={Fulgurite morphology: a classification scheme and clues to formation},
  author={Matthew A Pasek and Kristin Marie Block and Virginia D. Pasek},
  journal={Contributions to Mineralogy and Petrology},
  year={2012},
  volume={164},
  pages={477-492}
}
Fulgurites are natural glasses formed by cloud-to-ground lightning. Several different morphologies of fulgurites have been reported in previous studies, including sand fulgurites, rock fulgurites, and clay fulgurites. Herein, we examine sand, clay, and caliche fulgurites and demonstrate that these differ systematically in their morphology. We further use morphological features to constrain properties of fulgurite-forming lightning strikes. We classify fulgurites into four types of morphologies… Expand
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TLDR
These findings indicate that there were regions within the sample that were not subjected to temperatures of 2,000 K or more that the matrix is reported to attain when struck by lightning, and suggest that its formation is not exclusive to the impact process. Expand
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The fulgurite of Torre de Moncorvo (Portugal) was formed by lightning striking a small electricity pylon; it consists morphologically of a central cylinder with radial ramifications several metresExpand
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When lightning strikes the ground, it heats, melts, and fuses the sand in soils to form glass tubes known as fulgurites. We report here the composition of CO 2 , CO, and NO contained within theExpand
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TLDR
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TLDR
The Raman spectra revealed several forms of crystalline and fused silica and also the presence of polyaromatic hydrocarbons found in an interfacial zone of a glass bubble, suggesting that some regions of the fulgurite specimen were not subjected to temperatures of 1800°C, which are attained when lightning hits the surface of sand or a rock. Expand
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