1,721,013 research outputs found
Fault geometry, strain partitioning and deformation history inferred by fluvial topography and marine terraces analyses
Full text linkAdvancements in the quantitative investigation of fluvial topography in tectonically active regions account for
the emerging numerical modelling of river profiles and their linear inversions. Applications of a geomorphic
approach strive for the reconstruction of long-term tectonic deformation histories by decoding base-level fall
signals transiently embedded in the geomorphic record. I present integrated results from river profile inversions
and marine terraces analyses, here used to outline the deformation model associated to a debated crustal fault
system at the southern termination of the Calabrian Forearc High (Central Mediterranean). The study aims at
constraining spatial and temporal variations in geometry, strain partitioning, slip rate, and time-transgressive
propagation of the tectonic deformation associated with a fault system. In particular, I systematically analyze
river profiles draining the eastern flank of the Peloritani Mts. in northeastern Sicily (southern Italy), a NNE-SSWtrending
mountain ridge thought as located at the footwall of an active, ESE-dipping normal fault. I perform the
linear inversions of fluvial topography by applying recently available MATLAB scripts, and I carry out the
analysis of terraced surfaces by both GIS tools and MATLAB-based software packages. The results I obtain suggest
that the eastern flank of the Peloritani Mts. have been deformed according to at least three main stages of uplift
accommodated along distinct, ~10–15 km-long en- ́echelon arranged fault segments. The reconstructed evolution
of tectonic deformation unveils time-transgressive, southward propagation since the last ~600 kyr, inset in a
general increase, through time, of the regional component of uplift. The results of this study contribute to address
the issues of the deformation style and strain partitioning along complex and/or debated fault systems. These
results also demonstrate the potential of the geomorphic approach in defining the spatial and temporal tectonic
evolutionary model of a region
KNICKPOINTS AS GEOMORPHIC MARKERS OF ACTIVE TECTONICS: A CASE STUDY FROM NORTHEASTERN SICILY (SOUTHERN ITALY)
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No full textGeological map of the Tellaro River Valley (Hyblean Foreland, southeastern Sicily, Italy)
No full textLate Quaternary tectonics and active ground deformation in the Catania urban area (eastern Sicily): New constraints from a geological investigation
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Carta geologica e profili geologici e di velocità delle onde sismiche dei dintorni dell'abitato di Santa Venerina (scala 1:5.000)
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