Publication Date:
2017-04-04
Description:
We performed geodetic strain rate analyses in
southern Italy, using new GPS velocities. Two-dimensional
strain and rotation rate fields were estimated and results show
that most of the shortening is distributed in the northern
Sicily offshore. Extension becomes more evident and comparable
with shortening on the eastern side of the same
margin, and greater in the eastern Sicily offshore. Principal
shortening and extension rate axes are consistent with longterm
geological features: seismic reflection profiles show
both active compressive and extensional faults affecting
Pleistocene strata. We show evidence for contemporaneous
extension and transtension in the Cefalu` Basin. Combining
geodetic data and geological features point to the coexistence
of independent geodynamic processes, i.e., the active E–W
backarc spreading in the hangingwall of the Apennines
subduction zone and shortening along the southern margin of
the Tyrrhenian backarc basin operated by the NNW-motion
of Africa relative to Eurasia.
Description:
Published
Description:
1915-1924
Description:
3.2. Tettonica attiva
Description:
JCR Journal
Description:
restricted
Keywords:
Southern Tyrrhenian Sea
;
GPS-derived strain rate
;
Seismic reflection profiles
;
Coexisting tectonics
;
04. Solid Earth::04.07. Tectonophysics::04.07.07. Tectonics
Repository Name:
Istituto Nazionale di Geofisica e Vulcanologia (INGV)
Type:
article
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