globalchange  > 气候变化与战略
DOI: 10.1016/j.tecto.2021.228861
论文题名:
The impact of structural complexity, fault segmentation, and reactivation on seismotectonics: Constraints from the upper crust of the 2016–2017 Central Italy seismic sequence area
作者: Buttinelli M.; Petracchini L.; Maesano F.E.; D'Ambrogi C.; Scrocca D.; Marino M.; Capotorti F.; Bigi S.; Cavinato G.P.; Mariucci M.T.; Montone P.; Di Bucci D.
刊名: Tectonophysics
ISSN: 00401951
出版年: 2021
卷: 810
语种: 英语
中文关键词: 3D geological model ; Central apennines ; Earthquakes ; Inherited faults ; Normal faults ; Thrust sheets
英文关键词: 3D modeling ; Large dataset ; Petroleum prospecting ; Seismology ; 3-d geological models ; Central Apennines ; Extensional stress ; Extensional tectonics ; Fault segmentation ; Hydrocarbon exploration ; Structural complexity ; Surface expression ; Fault slips ; data interpretation ; earthquake ; extensional tectonics ; flexure ; hydrocarbon exploration ; normal fault ; seismicity ; seismotectonics ; three-dimensional modeling ; thrust ; upper crust ; Apennines ; Italy
英文摘要: Young and tectonically active chains like the Central Apennines (Italy) are featured by high structural complexity as a result of the overprint of subsequent deformational stages, making interpretation of seismotectonics challenging. The Central Apennines are characterized by the stacking of tectono-sedimentary units organized in thrust sheets. However, extensional tectonics is currently affecting the axial sector of the thrust belt, mostly expressing in extensional earthquakes. Using a large subsurface dataset acquired for hydrocarbon exploration in the region struck by the 2016–2017 Central Italy seismic sequence, we built a comprehensive 3D geological model and compared it with the seismicity. The model primarily shows a series of thrusts developed during the Miocene-Pliocene Apennines orogenesis and inherited normal faults developed during the Mesozoic extensional phase and the Miocene foreland flexural process. These normal faults were segmented and transported within the thrust sheets, and sometimes they still show a clear surface expression. The succession of tectonic stages resulted in a widespread reactivation of inherited structures, sometimes inverting their kinematics with different styles and rates, and disarticulating pre-existing configurations. Such evolution has a strong impact on the seismicity observed in the area, as demonstrated by some examples that show how the seismicity is aligned on segments of inherited faults, both compressional and extensional. Their reactivation can be explained by their favorable orientation within the current extensional stress field. Results feed the debate about the seismogenic potential of faults identified both at depth and surface, which can impact the seismic hazard of the Apennines. © 2021 Elsevier B.V.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/170784
Appears in Collections:气候变化与战略

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作者单位: Istituto Nazionale di Geofisica e Vulcanologia, Department of Seismology and Tectonophysics, Via di Vigna Murata, 605, Roma, 00143, Italy; Consiglio Nazionale delle Ricerche, Istituto di Geologia Ambientale e Geoingegneria, Piazzale Aldo Moro, 7, Roma, 00185, Italy; Istituto Superiore per la Protezione e la Ricerca Ambientale, Dip. Servizio Geologico d'Italia, Via Vitaliano Brancati, 48, Roma, 00144, Italy; Università degli Studi di Roma La Sapienza, Piazzale Aldo Moro, 5, Roma, 00185, Italy; Dipartimento della Protezione Civile, Presidenza del Consiglio dei Ministri, Via Ulpiano, 11, Roma, 00193, Italy

Recommended Citation:
Buttinelli M.,Petracchini L.,Maesano F.E.,et al. The impact of structural complexity, fault segmentation, and reactivation on seismotectonics: Constraints from the upper crust of the 2016–2017 Central Italy seismic sequence area[J]. Tectonophysics,2021-01-01,810
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