Geological record of fluid flow and seismogenesis along an erosive subducting plate boundary

Paola Vannucchi (), Francesca Remitti and Giuseppe Bettelli
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Paola Vannucchi: Università di Firenze, Via La Pira, 4, 50121 Firenze, Italy
Francesca Remitti: Università di Modena e Reggio Emilia, Largo S. Eufemia, 19, 41100 Modena, Italy
Giuseppe Bettelli: Università di Modena e Reggio Emilia, Largo S. Eufemia, 19, 41100 Modena, Italy

Nature, 2008, vol. 451, issue 7179, 699-703

Abstract: A fossil erosive subduction channel (the shear zone marking the plate boundary) preserved in the Northern Apennines of Italy is identified. The fossil zone records the presence of two décollements which seem to have been simultaneously active at the top and base of the subduction channel. In modern subduction zones the onset of seismic activity is believed to occur at ∼150° C, however in the fossil channel the onset seems to have occurred at colder temperatures.

Date: 2008
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DOI: 10.1038/nature06486

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