Fulgurite morphology: a classification scheme and clues to formation

  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},
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… 

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