Principal Slip Zones in Limestone: Microstructural Characterization and Implications for the Seismic Cycle (Tre Monti Fault, Central Apennines, Italy)

Earthquakes in central Italy, and in other areas worldwide, often nucleate within and rupture through carbonates in the upper crust. During individual earthquake ruptures, most fault displacement is thought to be accommodated by thin principal slip zones. This study presents detailed microstructural...

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Bibliographic Details
Published in:Pure and applied geophysics 2011-12, Vol.168 (12), p.2365-2393
Main Authors: Smith, Steven A. F., Billi, Andrea, Toro, Giulio Di, Spiess, Richard
Format: Article
Language:English
Subjects:
Ambient temperature
Calcite
Carbonates
Earth and Environmental Science
Earth Sciences
Earthquakes
Fault lines
Faults
Fluidization
Geophysics/Geodesy
Landslides
Limestone
Microstructure
Minerals
Rock deformation
Rupture
Scanning electron microscopy
Seismic activity
Seismic engineering
Seismic phenomena
Seismology
Slip
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Summary:Earthquakes in central Italy, and in other areas worldwide, often nucleate within and rupture through carbonates in the upper crust. During individual earthquake ruptures, most fault displacement is thought to be accommodated by thin principal slip zones. This study presents detailed microstructural observations of the slip zones of the seismically active Tre Monti normal fault zone. All of the slip zones cut limestone, and geological constraints indicate exhumation from
ISSN:0033-4553
1420-9136
DOI:10.1007/s00024-011-0267-5