Publication Date:
2024-02-09
Description:
This study provides a lithospheric-scale model along the Ionian Subduction zone
in Southern Italy, contributing to the seismotectonic investigation of a region
which is affected by relevant historical seismicity. The study employs gravity
forward modelling to build the geo-structural model along a composite, NWSE
trending transect extending from the Ionian to the Tyrrhenian Sea, including the
Aeolian arc and the Calabro-Peloritan onshore. Through a multidisciplinary
approach, we propose new interpretations of three 2D deep-seismic reflection
profiles across the study area. Such interpretative profiles are used as constraints
to model the observed Bouguer gravity anomalies providing upper and lower crust
geometries. Whilst a tomographic model provides constraints for the lithospheric
and asthenospheric modelling. The entire workflow is constrained by literature
data about Moho geometry, deep seismicity and tomographic images that are
integrated to determine the subducting slab geometry. The proposed model of
the entire subducting system reasonably fits the observed gravity field and is
coherent with the first-order geological and geophysical constraints. The
modelling results in updated Tyrrhenian and Ionian Moho depth, subducting
slab geometry and location, and densities of the main units, providing valuable
input about the composition and geometry of the Calabrian arc structures.
Description:
PRIN-2017 (project #2017KT2MKE_003)
Description:
Published
Description:
1259831
Description:
OST1 Alla ricerca dei Motori Geodinamici
Description:
JCR Journal
Keywords:
Calabrian Arc (Italy)
;
subducion complex
;
gravity forward modeling, crustal model
;
Ionian Subduction zone
;
Tyrrhenian back-arc basin-calabrian arc-accretionary wedge system
;
Southern Italy
;
04.01. Earth Interior
;
04.07. Tectonophysics
;
04.04. Geology
Repository Name:
Istituto Nazionale di Geofisica e Vulcanologia (INGV)
Type:
article
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