Orogen-scale uplift in the central Italian Apennines drives episodic behaviour of earthquake faults.

ABSTRACT: Many areas of the Earth's crust deform by distributed extensional faulting and complex fault interactions are often observed. Geodetic data generally indicate a simpler picture of continuum deformation over decades but relating this behaviour to earthquake occurrence over centuries, given numerous potentially active faults, remains a global problem in hazard assessment. We address this challenge for an array of seismogenic faults in the central Italian Apennines, where crustal extension and devastating earthquakes occur in response to regional surface uplift. We constrain fault slip-rates since ~18 ka using variations in cosmogenic ³⁶Cl measured on bedrock scarps, mapped using LiDAR and ground penetrating radar, and compare these rates to those inferred from geodesy. The ³⁶

SUBMITTER: Cowie PA 

PROVIDER: S-EPMC5359594 | biostudies-literature | 2017 Mar

REPOSITORIES: biostudies-literature