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: http://hdl.handle.net/2122/1026

Authors: Mirabella, F.*
Ciaccio, M. G.*
Barchi, M. R.*
Merlini, S.*
Title: The Gubbio normal fault (Central Italy): geometry, displacement distribution and tectonic evolution
Title of journal: Journal of Structural Geology
Series/Report no.: 26 (2004)
Publisher: Elsevier
Issue Date: 2004
URL: http://www.elsevier.com/wps/find/journaldescription.cws_home/539/description#description
Keywords: Listric normal faults
Fault reactivation
Seismic profiles
Displacement distribution
Earthquakes
Abstract: Normal faults within orogenic belts can be pre-, syn- or post-orogenic features. We studied the Gubbio normal fault (central Italy), which is an example of a pre-orogenic fault reactivated in a post-orogenic stage. The Gubbio Fault is a 22-km-long fault bordering a Quaternary basin and part of an active faults system in the Umbria–Marche region (Central Italy). The interpretation of a set of seismic profiles enables us to reconstruct the fault geometry in detail and to measure displacement and throw distributions along the fault strike. Seismic data indicate that the Gubbio Fault represents an example of multiple reactivation: at least a portion of the fault was active in the Miocene and only a part of the total displacement was achieved in the Quaternary. The reconstruction of the fault geometry at depth shows that the fault is characterised by listric geometry. The fault is also characterised by a bend along strike and structure contours show that this geometry is maintained at depth. As the fault is commonly addressed as presently active, the maximum fault dimensions are correlated to the maximum expected earthquake, and the presence of the fault bend is discussed as a possible barrier to seismic ruptures propagation.
Appears in Collections:Manuscripts
04.06.01. Earthquake faults: properties and evolution
Papers Published / Papers in press

Files in This Item:

File SizeFormatVisibility
jsg-2004.pdf2.48 MBAdobe PDFView/Open


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


Share this record
Del.icio.us

Citeulike

Connotea

Facebook

Stumble it!

reddit


 

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