Segmentation pattern and structural complexities in seismogenic extensional settings: The North Matese Fault System (Central Italy)

Ferrarini, Federica; Boncio, Paolo; Nardis, Rita de; Pappone, Gerardo; Cesarano, Massimo; Aucelli, Pietro P. C.

doi:10.1016/j.jsg.2016.11.006

Cited by 30 publications

(42 citation statements)

References 55 publications

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“…Such pronounced uncertainty is partly due to the possible variability of the dip angle and of the locking depth (as shown in supporting information Figure S7) and partly to the large uncertainties of geodetic measurements in the Fucino Plain itself (see Profile 2 in Figure 5). (Figure 7) 2 Matese 1.0-1.6 295 Throw rate 0.9-1.0 mm/a ) A Throw rate 0.1-0.5 mm/a (Cinque et al, 2000) B Throw rate 0.7-1.0 mm/a (Guerrieri et al, 1999) C Throw rate 0.9-1.8 mm/a (Ferrarini et al, 2017) D 3…”

Section: Fucino Fault Systemmentioning

confidence: 99%

Partitioning the Ongoing Extension of the Central Apennines (Italy): Fault Slip Rates and Bulk Deformation Rates From Geodetic and Stress Data

et al. 2020

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We investigated whether the joint inversion of geodetic and stress direction data can constrain long‐term fault slip rates in the central Apennines, and ultimately how extension is partitioned among fault slip and bulk lithosphere permanent strain. Geodetic velocities are collected in the fault interseismic stage with steady secular deformation; thus, long‐term estimates can be derived with a model of elastically unloading seismogenic faults within a viscously deforming lithosphere. As the average spacing of permanent Global Navigation Satellite Systems (GNSS) stations is similar to the average length of seismogenic faults (25–35 km), if not larger, we decided to merge permanent and temporary GNSS measurements, resulting in a denser geodetic data set. Given that most normal faults in the Apennines have slip rates around or below 1 mm/a, and most campaign GNSS velocities carry similar uncertainties, simple local back slip models cannot be applied. More sophisticated modeling is required to extract reasonable bulk deformation rates and long‐term fault slip rates at signal‐to‐noise ratio of order unity. Given the spatial distribution of the GNSS network, we estimated the long‐term slip rate of seven major fault systems that are in satisfactory agreement with available geological slip rates. The resulting spatial distribution of bulk deformation rates locally fits short‐term transients; in other cases, they represent the currently unclear signature of tectonic processes like upper‐crustal viscoplastic deformation and aseismic slip, or indicate missing faults in the adopted database. We conclude that the time is ripe for determining fault slip rates using geodetic and stress direction data, particularly where fault activity rates are hard to determine geologically.

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Section: Fucino Fault Systemmentioning

confidence: 99%

Partitioning the Ongoing Extension of the Central Apennines (Italy): Fault Slip Rates and Bulk Deformation Rates From Geodetic and Stress Data

et al. 2020

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“…The late Middle Pleistocene to Holocene morphotectonic evolution of some mountain fronts bounding intermontane basins in the axial zone of the Central-Southern Appennines is well constrained by multiproxy data (e.g. Venafro basin: Amato et al, 2017b;Isernia basin: Di Bucci et al, 2005a;Sessano basin: Amato et al, 2011;Bojano basin: Amato et al, 2014;Ferrarini et al, 2017;Galli et al, 2017;Vallo di Diano: Giano et al, 2014;Schiattarella et al, 2017;Fucino basin and Aterno valley: Giaccio et al,2017b;Miccadei et al, 2017). Recent fault activity and moderate to high magnitude seismicity are also well documented in these areas (Valensise and Pantosti, 2001;Rovida et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

“…Venafro basin: Amato et al, 2017b;Isernia basin: Di Bucci et al, 2005a;Sessano basin: Amato et al, 2011;Bojano basin: Amato et al, 2014;Ferrarini et al, 2017;Galli et al, 2017;Vallo di Diano: Giano et al, 2014;Schiattarella et al, 2017; Fucino basin and Aterno valley: Giaccio et al,2017b;Miccadei et al, 2017). Venafro basin: Amato et al, 2017b;Isernia basin: Di Bucci et al, 2005a;Sessano basin: Amato et al, 2011;Bojano basin: Amato et al, 2014;Ferrarini et al, 2017;Galli et al, 2017;Vallo di Diano: Giano et al, 2014;Schiattarella et al, 2017; Fucino basin and Aterno valley: Giaccio et al,2017b;Miccadei et al, 2017).…”

Section: Introductionunclassified

Geomorphic response to late Quaternary tectonics in the axial portion of the Southern Apennines (Italy): A case study from the Calore River valley

Amato

Aucelli

Cesarano

et al. 2018

Earth Surf Processes Landf

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The present study focuses on the morphotectonic evolution of the axial portion of the Southern Apennine chain between the lower Calore River valley and the northern Camposauro mountain front (Campania Region). A multidisciplinary approach was used, including geomorphological, field‐geology, stratigraphical, morphotectonic, structural, 40Ar/39Ar and tephrostratigraphical data. Results indicate that, from the Lower Pleistocene onwards, this sector of the chain was affected by extensional tectonics responsible for the onset of the sedimentation of Quaternary fluvial, alluvial fan and slope deposits. Fault systems are mainly composed of NW‐SE, NE–SW and W‐E trending strike‐slip and normal faults, associated to NW‐SE and NE–SW oriented extensions. Fault scarps, stratigraphical and structural data and morphotectonic indicators suggest that these faults affected the wide piedmont area of the northern Camposauro mountain front in the Lower Pleistocene–Upper Pleistocene time span. Faults affected both the oldest Quaternary slope deposits (Laiano Synthem, Lower Pleistocene) and the overlying alluvial fan system deposits constrained between the late Middle Pleistocene and the Holocene. The latter are geomorphologically and chrono‐stratigraphically grouped into four generations, I generation: late Middle Pleistocene–early Upper Pleistocene, with tephra layers 40Ar/39Ar dated to 158±6 and 113±7 ka; II generation: Upper Pleistocene, with tephra layers correlated with the Campanian Ignimbrite (39 ka) and with the slightly older Campi Flegrei activity (40Ar/39Ar age 48±7 ka); III generation: late Upper Pleistocene–Lower Holocene, with tephra layers correlated with the Neapolitan Yellow Tuff (~15 ka); IV generation: Holocene in age. The evolution of the first three generations was controlled by Middle Pleistocene extensional tectonics, while Holocene fans do not show evidence of tectonic activity. Nevertheless, considering the moderate to high magnitude historical seismicity of the study area, we cannot rule out that some of the recognized faults may still be active. Copyright © 2018 John Wiley & Sons, Ltd.

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“…The SW-dipping structures uplift the range relative to the Volturno Basin including the 9 September 1349 M w 6.6 event [10]. To the northeast, the strong M w 6.6 1805 earthquake [5,36] shows a NE-dipping fault. For this historical event, no surface breaking was reported.…”

Section: Introductionmentioning

confidence: 99%

The 2013–2018 Matese and Beneventano Seismic Sequences (Central–Southern Apennines): New Constraints on the Hypocentral Depth Determination

et al. 2019

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The Matese and Beneventano areas coincide with the transition from the central to the southern Apennines and are characterized by both SW- and NE-dipping normal faulting seismogenic structures, responsible for the large historical earthquakes. We studied the Matese and Beneventano seismicity by means of high-precision locations of earthquakes spanning from 29 December 2013 to 4 September 2018. Events were located by using all of the available data from temporary and permanent stations in the area and a 1D computed velocity model, inverting the dataset with the Velest code. For events M > 2.8 we used P- and S-waves arrival times of the strong motion stations located in the study area. A constant value of 1.83 for Vp/Vs was computed with a modified Wadati method. The dataset consists of 2378 earthquakes, 18,715 P- and 12,295 S-wave arrival times. We computed 55 new fault plane solutions. The mechanisms show predominantly normal fault movements, with T-axis trends oriented NE–SW. Only relatively small E–W trending clusters in the eastern peripheral zones of the Apenninic belt show right-lateral strike-slip kinematics similar to that observed in the Potenza (1990–1991) and Molise (2002 and 2018) sequences. These belong to transfer zones associated with differential slab retreat of the Adriatic plate subduction beneath the Apennines. The Matese sequence (December 2013–February 2014; main shock Mw 5.0) is the most relevant part of our dataset. Hypocentral depths along the axis of the Apenninic belt are in agreement with previous seismological studies that place most of the earthquakes in the brittle upper crust. We confirm a general deepening of seismicity moving from west to the east along the Apennines. Seismicity depth is controlled by heat-flow, which is lower in the eastern side, thus causing a deeper brittle–ductile transition.

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Segmentation pattern and structural complexities in seismogenic extensional settings: The North Matese Fault System (Central Italy)

Cited by 30 publications

References 55 publications

Partitioning the Ongoing Extension of the Central Apennines (Italy): Fault Slip Rates and Bulk Deformation Rates From Geodetic and Stress Data

Partitioning the Ongoing Extension of the Central Apennines (Italy): Fault Slip Rates and Bulk Deformation Rates From Geodetic and Stress Data

Geomorphic response to late Quaternary tectonics in the axial portion of the Southern Apennines (Italy): A case study from the Calore River valley

The 2013–2018 Matese and Beneventano Seismic Sequences (Central–Southern Apennines): New Constraints on the Hypocentral Depth Determination

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