Earth-prints repository, logo   DSpace

About DSpace Software
|earth-prints home page | roma library | bologna library | catania library | milano library | napoli library | palermo library
Please use this identifier to cite or link to this item:

Authors: Chiarabba, C.*
Chiodini, G.*
Title: Continental delamination and mantle dynamics drive topography extension and fl uid discharge in the Apennines
Title of journal: Geology (Geological Society of America)
Series/Report no.: 6 /41(2013)
Publisher: Geological Society of America
Issue Date: 2013
DOI: 10.1130/G33992.1
Keywords: mantle anomaly
Continental delamination
the Apennines
Abstract: The 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:04.08.07. Instruments and techniques
03.02.04. Measurements and monitoring
04.08.01. Gases
04.04.12. Fluid Geochemistry
Papers Published / Papers in press

Files in This Item:

File SizeFormatVisibility
3 Chiarabba-Chiodini,Delamination,Geology.pdf815.77 kBAdobe PDFonly authorized users View/Open

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

Share this record




Stumble it!



Valid XHTML 1.0! ICT Support, development & maintenance are provided by CINECA. Powered on DSpace Software. CINECA