Regional Seismotectonic Zonation of Hydrocarbon Fields in Active Thrust Belts: A Case Study from Italy

Lavecchia, Giusy; Nardis, Rita de; Cirillo, Daniele; Bello, Simone; Brozzetti, Francesco

doi:10.1007/978-94-024-2046-3_7

Cited by 17 publications

(9 citation statements)

References 105 publications

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“…(B) The Italian earthquake focal mechanisms (M W ≥ 4.0) from 1908 to 2015 (Montone and Mariucci, 2016); red stars represent the mainshocks of 2016/2017 Central Italy and 1980 Campania-Lucania seismic sequences. The background colors indicate the extensional seismotectonic provinces as in Lavecchia et al, 2021: Key: 1 Extensional seismogenic province; 2 Deep extensional seismogenic province; 3 right-lateral strike-slip faults within the Adriatic foreland; 4 Active outer thrust system; The sketch in the lower left corner represents the simplified model of the Apennine extensional system as in Lavecchia et al, 2011. (C) Active faults in Southern Italy (after Adinolfi et al, 2015) with major historical and instrumental earthquakes from Parametric Catalogue of Italian Earthquakes, CPTI15 v2.0 (Rovida et al, 2019).…”

Section: Introductionmentioning

confidence: 99%

Fault Pattern and Seismotectonic Style of the Campania – Lucania 1980 Earthquake (Mw 6.9, Southern Italy): New Multidisciplinary Constraints

Bello¹,

Nardis²,

Scarpa

et al. 2021

Front. Earth Sci.

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New fault trace mapping and structural survey of the active faults outcropping within the epicentral area of the Campania-Lucania 1980 normal fault earthquake (Mw 6.9) are integrated with a revision of pre-existing earthquake data and with an updated interpretation of the CROP-04 near-vertical seismic profile to reconstruct the surface and depth geometry, the kinematics and stress tensor of the seismogenic fault pattern. Three main fault alignments, organized in high-angle en-echelon segments of several kilometers in length, are identified and characterized. The inner and intermediate ones, i.e. Inner Irpinia (InIF) and Irpinia Faults (IF), dip eastward; the outer Antithetic Fault (AFA) dips westward. Both the InIF and the IF strike NW-SE along the northern and central segments and rotate to W-E along the southern segments for at least 16 km. We provide evidence of surface coseismic faulting (up to 1 m) not recognized before along the E-W segments and document coseismic ruptures with maximum vertical displacement up to ∼1 m where already surveyed from other investigators 40 years ago. Fault/slip data from surface data and a new compilation of focal mechanisms (1980 – 2018) were used for strain and stress analyses to show a coherent NNE-directed least principal stress over time and at different crustal depths, with a crustal-scale deviation from the classic SW-NE tensional direction across the Apennines of Italy. The continuation at depth of the outcropping faults is analyzed along the trace of the CROP-04 profile and with available hypocentral distributions. Integrating all information, a 3D seismotectonic model, extrapolated to the base of the seismogenic layer, is built. It outlines a graben-like structure with a southern E-W bend developed at depth shallower than 10–12 km, at the hanging wall of an extensional NE- to E-dipping extensional basal detachment. In our interpretation, such a configuration implies a control in the stress transfer during the 1980 earthquake ruptures and provides a new interpretation of the second sub-event, occurred at 20 s. Our reconstruction suggests that the latter ruptured a hanging wall NNE-dipping splay of the E-W striking main fault segment and possibly also an antithetic SSW-dipping splay, in two in-sequence episodes.

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Section: Introductionmentioning

confidence: 99%

Fault Pattern and Seismotectonic Style of the Campania – Lucania 1980 Earthquake (Mw 6.9, Southern Italy): New Multidisciplinary Constraints

Bello¹,

Nardis²,

Scarpa

et al. 2021

Front. Earth Sci.

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“…The study area falls inside two different seismogenic zones: the Morrone Porrara Fault System (hereinafter MPFS) [20,21] and the Abruzzo Citeriore Basal Thrust (ACBT) in [21] (Additional file 2: Fig. S1) the first belonging to the extensional domain of the central Apennines and the latter to the compressional seismogenic province of Italy [22][23][24][25][26]. Local seismic events are reported in CPTI15 [10,11] and CFTI5Med [27].…”

Section: Geological Settingmentioning

confidence: 99%

Geo-archaeology, archaeometry, and history of a seismic-endangered historical site in central Apennines (Italy)

et al. 2023

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Ancient human settlements accumulate essential historical, archaeological, and geological information. An example is the St. Angel Cave, which preserves a Romanesque church and a complex of lustral tubs in the Eastern Maiella Massif (Central Apennines of Italy). Historical chronicles and archaeological data show that the church dates to the 10th–11th century. The archaeometry applied to the ceramic, coin, and wooden artefacts resulting from the excavation established a chronology of the periods of use and abandonment of the St. Angel Cave. The layering of architectural elements, changes in style, and alterations of the church structure account for two collapses. The first could be related to the poorly known 1209 earthquake. In addition, we describe the damage and changes to the structure and the use of space caused probably by the 1706 and 1933 earthquakes.

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“…The frontal thrust and its splay are buried under Plio‐Pleistocene deposits, but they are evident in seismic lines and highlighted in morphotectonic studies. The Outermost Basal detachment and/or the Casoli and Bomba major inner splays are considered responsible for the most significant historical events of the area, which are the 1706 (Mw 6.8) and 1933 (Mw 5.9) earthquakes (DISS Working Group, 2015; Lavecchia et al., 2021). The westernmost sector of the study area comprises part of the Roman Comagmatic Province (Peccerillo, 1985) near the Tyrrhenian coast, more specifically, the area lacking volcanism between the Southernmost tip of the Albani Hills (Latium) and the Roccamonfina Volcano (Campania).…”

Section: Seismotectonic Settingmentioning

confidence: 99%

The Attenuation and Scattering Signature of Fluid Reservoirs and Tectonic Interactions in the Central‐Southern Apennines (Italy)

Talone,

De Siena,

Lavecchia

et al. 2023

Geophysical Research Letters

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Despite the high detection level of the Italian seismic network and the risk associated with its fault networks, Central‐Southern Italy has no unique geophysical model of the crust able to illuminate its complex tectonics. Here, we obtain seismic attenuation and scattering tomography models of this area; both reveal high attenuation and scattering anomalies characterizing the entire Apenninic Chain and related to its East‐ and West‐dipping extensional Quaternary tectonic alignments. Fault‐associated fractured zones become preferential ways for circulating and degassing high‐attenuation CO2‐bearing fluids. A previously undetected fluid source area is a high‐attenuation volume below the Matese complex, while a similar smaller anomaly supports a fluid source near L'Aquila. The most prominent low attenuation and scattering volumes reveal a locked aseismic zone corresponding to the Fucino‐Morrone‐Porrara fault systems, representing a zone of significant seismic hazard.

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Regional Seismotectonic Zonation of Hydrocarbon Fields in Active Thrust Belts: A Case Study from Italy

Cited by 17 publications

References 105 publications

Fault Pattern and Seismotectonic Style of the Campania – Lucania 1980 Earthquake (Mw 6.9, Southern Italy): New Multidisciplinary Constraints

Fault Pattern and Seismotectonic Style of the Campania – Lucania 1980 Earthquake (Mw 6.9, Southern Italy): New Multidisciplinary Constraints

Geo-archaeology, archaeometry, and history of a seismic-endangered historical site in central Apennines (Italy)

The Attenuation and Scattering Signature of Fluid Reservoirs and Tectonic Interactions in the Central‐Southern Apennines (Italy)

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