Publication Date:
2017-04-04
Description:
Southern Apulia (Adriatic foreland, Italy), has long been considered a “stable area”
lying in between two active orogens, but in fact its tectonic framework is poorly
known. To learn more about this topic, we carried out an original structural analysis
on Pleistocene deposits. The results indicate that southern Apulia has been affected
by mild but discernible brittle deformation throughout the Middle and Late
Pleistocene. Joints prevail, whereas faults are rare and all characterized by small
displacement. Horizontal extension dominates throughout the entire study area; the
SW-NE to SSW-NNE direction is the most widespread. WNW-ESE extension prevails
in the Adriatic side portion of the study area, but the dispersion of the measured
plane directions is high, suggesting that the local strain field is not characterized by a
strongly predominant trend. A Middle and Late Pleistocene, SW-NE to SSW-NNE–
oriented maximum extension is not surprising for the study area, as it is compatible
with most of the available geodynamic models, whereas the different state of
deformation affecting the Adriatic side of the study area requires further
investigations. We tentatively interpreted this anomaly as reflecting some regional
variation of the general geodynamic frame, for instance as the farthest evidence of
ongoing compressional deformation across the W-verging Albanide-Hellenide foldand-
thrust belt.
Description:
Study supported by a MIUR-COFIN
2004 Project (Bari RU: G. Mastronuzzi resp.; Lecce RU: P. Sansò resp.) and by the Project S2 funded in the framework of the 2004-2006 agreement between the Italian Department of Civil Protection and INGV (Research Units 2.4 and 2.11).
Description:
In press
Description:
3.2. Tettonica attiva
Description:
JCR Journal
Description:
open
Keywords:
active tectonics
;
brittle deformation
;
Pleistocene
;
Salento
;
04. Solid Earth::04.04. Geology::04.04.09. Structural geology
;
04. Solid Earth::04.04. Geology::04.04.10. Stratigraphy
;
04. Solid Earth::04.07. Tectonophysics::04.07.05. Stress
;
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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