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Earthquake rupture dynamics frozen in exhumed ancient faults

Author

Listed:
  • Giulio Di Toro

    (Paleontologia e Geofisica – Università di Padova)

  • Stefan Nielsen

    (Istituto Nazionale di Geofisica e Vulcanologia (INGV))

  • Giorgio Pennacchioni

    (Paleontologia e Geofisica – Università di Padova)

Abstract

Written in stone Just by looking at the traces of solidified friction-induced melt produced by ancient earthquakes it is possible to learn about fractures that lasted a few seconds, during seismic events that took place millions of years ago. In the Italian Alps, large sections of an ancient fault have been uprooted by tectonic movements, brought to the surface almost intact, and polished by the abrasion of a glacier. Secondary fractures created during the earthquakes tend to lie to one side of the fault in a particular direction, suggesting that rupture propagated in the same direction during repeated earthquakes.

Suggested Citation

  • Giulio Di Toro & Stefan Nielsen & Giorgio Pennacchioni, 2005. "Earthquake rupture dynamics frozen in exhumed ancient faults," Nature, Nature, vol. 436(7053), pages 1009-1012, August.
    • Handle: RePEc:nat:nature:v:436:y:2005:i:7053:d:10.1038_nature03910
    DOI: 10.1038/nature03910
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    Cited by:

    1. Lu Yao & Shengli Ma & Giulio Di Toro, 2023. "Coseismic fault sealing and fluid pressurization during earthquakes," Nature Communications, Nature, vol. 14(1), pages 1-8, December.
    2. Carpinteri, Alberto & Paggi, Marco, 2009. "A fractal interpretation of size-scale effects on strength, friction and fracture energy of faults," Chaos, Solitons & Fractals, Elsevier, vol. 39(2), pages 540-546.

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