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Authors: Basili, R.*
Barba, S.*
Title: Migration and shortening rates in the northern Apennines, Italy: implications for seismic hazard
Other Titles: Migration and shortening rates in the Apennines
Title of journal: Terra Nova
Series/Report no.: 6 / 19 (2007)
Publisher: Blackwell-Synergy
Issue Date: Dec-2007
DOI: 10.1111/j.1365-3121.2007.00772.x
Keywords: Active thrust faults
active folds
thrust belt migration
Abstract: Is compression across the northern Apennine fold-and-thrust system (Italy) still active? To address this question, we quantified the long-term rates of migration and shortening of the system along with the measurement errors. Our approach integrates structural geology, seismicity patterns, and statistical treatment of tectonic activity. On the basis of recently published surface and subsurface data, we found a migration rate of 8.85 ± 0.61 mm/yr. The inception age of individual fold structures follow closely this average rate, indicating that the system has been migrating at a constant rate for the past 17 Myr. Cumulative shortening of the system also increases linearly through time at 2.93 ± 0.31 mm/yr. The location of the youngest structures in the easternmost portion of the system coincides with a significant peak of seismic moment released by historical earthquakes. We conclude that not only these easternmost thrusts are still active, but also that they generate earthquakes.
Appears in Collections:Papers Published / Papers in press
04.04.01. Earthquake geology and paleoseismology
04.04.09. Structural geology
04.06.01. Earthquake faults: properties and evolution
04.07.02. Geodynamics
04.07.04. Plate boundaries, motion, and tectonics
04.07.06. Subduction related processes
04.07.07. Tectonics
05.01.04. Statistical analysis

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Basili_Barba_2007_TerraNova_PostPrint.pdfFreely downloadable Main article with figures168.49 kBAdobe PDFView/Open
Basili_Barba_2007_TerraNova_Published.pdfProtected Original file available from Blackwell Synergy2.66 MBAdobe PDFView/Open

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