Relationships between thrusts and normal faults in curved belts: New insight in the inversion tectonics of the Central-Northern Apennines (Italy)

Domenica, Alessandra Di; Turtù, Antonio; Satolli, Sara; Calamita, Fernando

doi:10.1016/j.jsg.2012.06.008

Cited by 58 publications

(47 citation statements)

References 31 publications

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“…From a geological point of view, the Central Italy 2016-2017 seismic sequence involved an area composed by two main domains separated each other by the Sibillini Thrust, a large tectonic discontinuity no more active (Di Domenica et al 2012). The northwestern sector features Cretaceous-Miocene calcareous and marly rocks, while Messinian foredeep torbiditic deposits (Laga Flysch Formation) outcrop in the southeastern one.…”

Section: Outline Of the Seismic Sequence And The Geology Of The Areamentioning

confidence: 99%

The Central Italy 2016–2017 seismic sequence: site response analysis based on seismological data in the Arquata del Tronto–Montegallo municipalities

Laurenzano

Barnaba

Romano

et al. 2018

Bull Earthquake Eng

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In this paper we evaluate the local seismic response for thirteen sites located in the municipalities of Arquata del Tronto and Montegallo, two areas which suffered heavy damage during the Mw 6.0 and Mw 5.4 earthquakes which struck Central Italy on August 24, 2016. The input dataset is made by ground motion recordings of 348 events occurred during the sequence. The spectral site response is estimated by the Generalized Inversion Technique and makes use of reference sites. The interpretation is further improved through the information provided by a reference-site independent method (i.e., the so called Receiver-Function Technique) and by the Horizontal-to-Vertical Spectral Ratios of ambient noise recordings. We also provide an independent estimate of the local amplification by comparing the Peak Ground Velocity and the Spectral Amplitudes observed at each site to the value estimated by well-established Ground Motion Prediction Equations for a rock-class site. The results obtained by the adopted methodologies are all highly consistent, and they emphasize the different seismic behavior of several sites at local scale. Thus, sites located on Quaternary deposits overlying the bedrock, such as Castro, Pretare, Spelonga, Pescara del Tronto, and Capodacqua feature some relevant amplifications in a medium (2-10 Hz) frequency range; two sites at Spelonga show amplifications also at low frequencies; three sites located on stiff formations, i.e. Uscerno, Balzo and Colle d'Arquata, respectively, feature either nearly neutral response or low amplification level. A probable topographic effect was identified at the rock site of Rocca di Arquata (MZ80).

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Section: Outline Of the Seismic Sequence And The Geology Of The Areamentioning

confidence: 99%

The Central Italy 2016–2017 seismic sequence: site response analysis based on seismological data in the Arquata del Tronto–Montegallo municipalities

Laurenzano

Barnaba

Romano

et al. 2018

Bull Earthquake Eng

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“…Shortening has been inferred to be maximum in the arc apex and to progressively decrease toward the endpoints [ Pierantoni et al ., ]. A strong influence of inversion tectonics has been documented in the Northern Apennines [e.g., Argnani and Gamberi , ; Tozer et al ., ; Scisciani , ; Calamita et al ., ]: during the Pliocene, NNE‐SSW pre‐existing normal faults were reactivated as oblique thrust ramps with fault‐bend geometry, while NW‐SE‐oriented normal faults were passively displaced by the NNE‐SSW oblique and the NW‐SE frontal thrusts, with fault‐propagation shortcut anticlines development [ Calamita et al ., , ; Di Domenica et al ., ].…”

Section: Geological Backgroundmentioning

confidence: 99%

“…Coli [] and Lavecchia [] interpreted such a feature as a dextral transpressive fault complicated by the interaction of several directions of movement between depositional paleodomains. Other authors [ Koopman , ; Bally et al ., ; Calamita et al ., ; Calamita and Deiana , ; Tavarnelli et al ., ; Finetti et al ., ; Satolli and Calamita , ; Calamita et al ., ; Di Domenica et al ., ] interpreted the OAS as a frontal and oblique ramp complex that reactivated pre‐existing Jurassic normal faults with different orientation.…”

Section: Geological Backgroundmentioning

confidence: 99%

Understanding progressive‐arc‐ and strike‐slip‐related rotations in curve‐shaped orogenic belts: The case of the Olevano‐Antrodoco‐Sibillini thrust (Northern Apennines, Italy)

et al. 2013

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We report on a paleomagnetic study of the southern sector of the Olevano‐Antrodoco‐Sibillini (OAS) thrust front, which corresponds to the southern limb of the Northern Apennines (Italy) orogenic salient. A lively debate has developed regarding the oroclinal/progressive‐arc versus non‐rotational nature of the OAS, which has been alternatively interpreted as a dextral strike‐slip fault, dextral transpressive fault, or frontal to oblique ramp that reactivated pre‐existing Jurassic normal faults. Here, we document the paleomagnetism, integrated with biostratigraphic and structural data, of 52 new sites from both the OAS hanging wall and footwall. On the basis of 39 retained sites, we find a peculiar pattern of tectonic rotations along the OAS thrust that evidences four rotational domains. The thrust footwall is characterized by a southern domain that undergoes an approximately 30° counterclockwise rotation with respect to the stable foreland, and an approximately non‐rotated domain. The data from the hanging wall indicate the occurrence of a dextral strike‐slip component along the southern sector of the OAS thrust supported by a strong clockwise rotation close to the NE‐SW lateral ramp, which rapidly fades 1 km from the thrust front. A slight but significant CW rotation observed in the remaining sites from the hanging wall confirms the progressive nature of the OAS, and its structural position as the southern limb of the Northern Apennines salient. Our detailed paleomagnetic study is crucial in discriminating between progressive‐arc‐ and strike‐slip‐related components in the main curved orogenic front of the Northern Apennines.

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“…The genesis is associated with the intense Oligocene-Miocene compressive tectonics (active until the Pliocene), in the outermost sector (Bally et al 1986;Deiana & Pialli 1994;Calamita et al 2012;Di Domenica et al 2012) and to wide-ranging vertical movements, not related to the structural setting of bedrock (Dufaure et al 1989;Dramis 1992). Normal faults with NW-SE trend, connected to a generalized tectonic uplift and the associated extensional phase (with maximum during the early and mid-Pleistocene) (Demangeot 1965;Ambrosetti et al 1982;Coltorti et al 1991;Mazzoli et al 2005) are mainly superimposed on the previous compressive structures: as a consequence, they generated, along the chain and its Tyrrhenian side, wide tectonic basins, tiered lowering of the relict surface, and tectonic-gravitational phenomena (Calamita et al 1994;Gentili & Pambianchi 1994;Materazzi et al 2014).…”

Section: Geological and Geomorphological Settingmentioning

confidence: 99%

Pliocene –Pleistocene geomorphological evolution of the Adriatic side of Central Italy

Gentili¹,

Pambianchi²,

Aringoli³

et al. 2017

Geologica Carpathica

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This work is a significant contribution to knowledge of the Quaternary and pre-Quaternary morphogenesis of a wide sector of central Italy, from the Apennine chain to the Adriatic Sea. The goal is achieved through a careful analysis and interpretation of stratigraphic and tectonic data relating to marine and continental sediments and, mostly, through the study of relict limbs of ancient landscapes (erosional surfaces shaped by prevailing planation processes). The most important scientific datum is the definition of the time span in which the modelling of the oldest morphological element (the "summit relict surface") occurred: it started during Messinian in the westernmost portion and after a significant phase during middle-late Pliocene, ended in the early Pleistocene. During the middle and late Pleistocene, the rapid tectonic uplift of the area and the climate fluctuations favoured the deepening of the hydrographic network and the genesis of three orders of fluvial terraces, thus completing the fundamental features of the landscape. The subsequent Holocene evolution reshaped the minor elements, but not the basic ones.

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Relationships between thrusts and normal faults in curved belts: New insight in the inversion tectonics of the Central-Northern Apennines (Italy)

Cited by 58 publications

References 31 publications

The Central Italy 2016–2017 seismic sequence: site response analysis based on seismological data in the Arquata del Tronto–Montegallo municipalities

The Central Italy 2016–2017 seismic sequence: site response analysis based on seismological data in the Arquata del Tronto–Montegallo municipalities

Understanding progressive‐arc‐ and strike‐slip‐related rotations in curve‐shaped orogenic belts: The case of the Olevano‐Antrodoco‐Sibillini thrust (Northern Apennines, Italy)

Pliocene –Pleistocene geomorphological evolution of the Adriatic side of Central Italy

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