Please use this identifier to cite or link to this item: http://hdl.handle.net/2122/8870
AuthorsChiarabba, C.* 
Chiodini, G.* 
TitleContinental delamination and mantle dynamics drive topography extension and fl uid discharge in the Apennines
Issue Date2013
Series/Report no.6 /41(2013)
DOI10.1130/G33992.1
URIhttp://hdl.handle.net/2122/8870
Keywordsmantle anomaly
Continental delamination
the Apennines
Subject Classification03. Hydrosphere::03.02. Hydrology::03.02.04. Measurements and monitoring 
04. Solid Earth::04.04. Geology::04.04.12. Fluid Geochemistry 
04. Solid Earth::04.08. Volcanology::04.08.01. Gases 
04. Solid Earth::04.08. Volcanology::04.08.07. Instruments and techniques 
AbstractThe Apennines belt of Italy undergoes a northeast-trending extension at a rate of a few millimeters per year that generates moderate to large normal-faulting earthquakes. In this paper, we show that seismicity, large earthquakes, strong gas emission, and belt topography all correlate with a broad, low Vp anomaly in the uppermost mantle. We propose that a thermal/fl uid anomaly in the mantle, associated with sub-lithospheric mantle replacement after delamination of the Adria lithosphere, supports the topography of the belt and drives the extensional tectonics. The mantle anomaly is likely caused by deep fl uids coming from the dehydration of the material subducted during the Europe-Adria collision and the delamination of Adria. Beneath the belt, CO2-rich fl uids are accumulated and occasionally discharged during large normal faulting earthquakes. After the replacement of sub-lithospheric mantle, the temperature at the base of the crust increases causing crustal stretching, anatexis, and strong degassing.
Appears in Collections:Papers Published / Papers in press

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