Please use this identifier to cite or link to this item:
http://hdl.handle.net/2122/11285
Authors: | Palano, Mimmo* Piromallo, Claudia* Chiarabba, Claudio* |
Title: | Surface imprint of toroidal flow at retreating slab edges: The first geodetic evidence in the Calabrian subduction system | Journal: | Geophysical Research Letters | Series/Report no.: | /44 (2017) | Issue Date: | 2017 | DOI: | 10.1002/2016GL071452 | URL: | http://onlinelibrary.wiley.com/doi/10.1002/2016GL071452/abstract | Keywords: | GPS Block rotation toroidal flow Calabrian Subduction system rollback tear fault |
Abstract: | Dense GPS observations can help Earth scientists to capture the surface imprint of mantle toroidal flow at slab edges. We document this process in the Calabrian subduction system, where the Ionian slab rollback took place during the past 30 Ma, following a stepwise process driven by migration of lithospheric tearing. We found rotation rates of ~1.29°/Ma (counterclockwise) and ~1.74°/Ma (clockwise), for poles located close to the northern and southern slab edges, respectively. These small-scale, opposite rotations occur along complex sets of active faults representing the present-day lithospheric expression of the tearing processes affecting the southeastward retreating Ionian slab at both edges. The observed rotations are likely still young and the process more immature at the northern tear, where it is unable to reorient mantle fabric and therefore is unseen by SKS splitting. |
Appears in Collections: | Article published / in press |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
2017_Palano et al [Calabrian Arc - Toroidal flows] GRL.pdf | Full paper | 1.84 MB | Adobe PDF | View/Open |
WEB OF SCIENCETM
Citations
50
13
checked on Feb 10, 2021
Page view(s)
323
checked on Apr 24, 2024
Download(s)
87
checked on Apr 24, 2024