QUaternary fault strain INdicators database - QUIN 1.0 - first release from the Apennines of central Italy

Lavecchia, Giusy; Bello, Simone; Andrenacci, Carlo; Cirillo, Daniele; Vicentini, Noemi; Nardis, Rita de; Roberts, Gerald; Brozzetti, Francesco

doi:10.1038/s41597-022-01311-8

Cited by 31 publications

(28 citation statements)

References 83 publications

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“…The western side of each regional transect is characterized by a large concentration of events (about 96% of data from the EQS-Catalog). They are distributed in an east-deepening wedge-shaped seismogenic volume and represent the upper crust extensional domain not investigated in this paper but well known in the literature 22 , 23 , 44 , 45 . They are associated with the east-dipping ATF and the antithetic west-dipping high-angle normal faults.…”

Section: Resultsmentioning

confidence: 99%

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Lithospheric double shear zone unveiled by microseismicity in a region of slow deformation

Nardis

Pandolfi

Cattaneo

et al. 2022

Sci Rep

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The deformation style of the continental lithosphere is a relevant issue for geodynamics and seismic hazard perspectives. Here we show the first evidence of two well-distinct low-angle and SW-dipping individual reverse shear zones of the Italian Outer Thrust System in Central Italy. One corresponds to the down-dip prosecution of the Adriatic Basal Thrust with its major splay and the other to a hidden independent structure, illuminated at a depth between 25 and 60 km, for an along-strike extent of ~ 150 km. Combining geological information with high-quality seismological data, we unveil this novel configuration and reconstruct a detailed 3D geometric and kinematic fault model of the compressional system, active at upper crust to upper mantle depths. In addition, we report evidence of coexisting deformation volumes undergoing well-distinguished stress fields at different lithospheric depths. These results provide fundamental constraints for a forthcoming discussion on the Apennine fold-and-thrust system's geodynamic context as a shallow subduction zone or an intra-continental lithosphere shear zone.

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Section: Resultsmentioning

confidence: 99%

“…When also considering the inner active stress field characterizing the upper crust of the central Apennines 45 , the 3D picture of coexisting (neighboring) deformation volumes undergoing well-distinguished stress fields at different depths becomes rather complex but defined.…”

Section: Discussionmentioning

confidence: 99%

Lithospheric double shear zone unveiled by microseismicity in a region of slow deformation

Nardis

Pandolfi

Cattaneo

et al. 2022

Sci Rep

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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 western side of the Mt. La Queglia anticline is characterised by a segmented, sub-vertical, N-S high-angle fault, variously interpreted as an extensional fault, active during the Miocene (Bigi et al 1995;Scisciani et al 2000), or as a Pliocene back-thrust (Ghisetti and Vezzani 1991) located within the extensional seismogenic province of Italy (sensu Lavecchia et al 2021Lavecchia et al , 2022. Alternatively, being not tilted or deformed, the faulting may be Pleistocene in age.…”

Section: Local Geologymentioning

confidence: 99%

La Queglia carbonatitic melnöite: a notable example of an ultra-alkaline rock variant in Italy

et al. 2022

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Very primitive ultramafic igneous rocks occur at Mt. La Queglia (Abruzzo, Italy). They form a strongly deformed sill–dyke system now tilted vertically. These rocks were initially classified as alnöite and, subsequently, have been suggested to be a carbonatitic olivine melilitite. However, further investigation and interpretation of these rocks is needed due to the presence of hand-specimen-scale textural variation suggesting a complex petrogenesis. We study the texture, mineral chemistry, and whole-rock geochemistry to define three main rock-types. (1) A brecciated rock with an ocellar texture composed of calcite pseudomorphs after olivine and melilite, plus fresh diopside in a groundmass of mica, aegirine, garnet, calcite, apatite, perovskite, titanate and chlorite. Zoned ocelli in this rock show an amoeboid shape, agglutination, and menisci typical of a plastic state. (2) A quenched rock showing a spinifex texture containing long feathery phenocrysts of cpx and mica suspended in a groundmass of nepheline, aegirine, apatite, Ti–rich magnetite, plus abundant calcite and some K-feldspar and zeolites. (3) A coarse-grained rock is composed of calcite plus intergranular glauconite, a mixture of spinel mineral group and Ti–rich magnetite, accessory barite, pyrite, and chabazite-K. The igneous rocks at Mt. La Queglia show extreme SiO2-undersaturation (33.5–37.3 wt% SiO2), high MgO contents and TiO2/Al2O3 ratios. Rock-type 1 has a lower Mg number Mg# = 100 × [Mg/(Mg + Fe2+)], higher Ca number Ca# = 100 × [Ca/(Ca + Mg)], high Cr (up to 720 ppm) Ni (up to 379 ppm), higher rare earth elements (REE) contents as well as La/Lu ratio, compared to rock-type 2. Perovskite and chromite accumulation seems an important agent during rock differentiation. Rock-type 3 shows REE cross-over with rock-type 2 suggesting light (L)REE concentration in a carbothermal residuum. Mt. La Queglia rocks are an end-member compared to other Upper Cretaceous and Paleogene Italian lamprophyres, suggesting a low degree of melting of a HIMU (a colloquialism for “high-μ”; referring to mantle domains with high 238U/ 204Pb) garnet-bearing mantle source.

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QUaternary fault strain INdicators database - QUIN 1.0 - first release from the Apennines of central Italy

Cited by 31 publications

References 83 publications

Lithospheric double shear zone unveiled by microseismicity in a region of slow deformation

Lithospheric double shear zone unveiled by microseismicity in a region of slow deformation

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

La Queglia carbonatitic melnöite: a notable example of an ultra-alkaline rock variant in Italy

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