Please use this identifier to cite or link to this item: http://hdl.handle.net/2122/7813
AuthorsMiller, M. S. 
Piana Agostinetti, N. 
TitleErosion of the continental lithosphere at the cusps of the Calabrian arc: Evidence fromSreceiver functions analysis
Issue Date2011
Series/Report no./38(2011)
DOI10.1029/2011GL049455
URIhttp://hdl.handle.net/2122/7813
Keywordscontinental lithosphere
Subject Classification04. Solid Earth::04.04. Geology::04.04.99. General or miscellaneous 
AbstractMediterranean tectonics has been characterized by an irregular, complex temporal evolution with episodic rollback and retreat of the subducted plate followed by period of slow trench-migration. To provide insight into the geodynamics of the Calabrian arc, we image the characteristics and lithospheric structure of the convergent, Apulian and Hyblean forelands at the cusps of the arc. Specifically we investigate the crustal and lithospheric thicknesses using teleseismic S-to-p converted phases, applied to the Adria-Africa plate margin for the first time. We find that the Moho in the Apulian foreland is nearly flat at ∼30 km depth, consistent with previous P receiver functions results, and that the Hyblean crustal thickness is more complex, which can be understood in terms of the nature of the individual pieces of carbonate platform and pelagic sediments that make up the Hyblean platform. The lithospheric thicknesses range between 70–120 km beneath Apulia and 70–90 km beneath Sicily. The lithosphere of the forelands at each end of the Calabrian arc are continental in nature, buoyant compared to the subducting oceanic lithosphere and have previously been interpreted as mostly undeformed carbonate platforms. Our receiver function images also show evidence of lithospheric erosion and thinning close to Mt. Etna and Mt. Vulture, two volcanoes which have been associated with asthenospheric upwelling and mantle flow around of the sides the slab. We suggest that as the continental lithosphere resists being subducted it is being thermo-mechanically modified by toroidal flow around the edges of the subducting oceanic lithosphere of the Calabrian arc.
Appears in Collections:Papers Published / Papers in press

Files in This Item:
File Description SizeFormat 
22.pdf526.98 kBAdobe PDFView/Open    Request a copy
Show full item record

Page view(s)

160
checked on Apr 29, 2017

Download(s)

14
checked on Apr 29, 2017

Google ScholarTM

Check

Altmetric