The San Potito area in central Apennines (Italy), enclosed within the Latium-Abruzzi carbonate platform, exposes anomalously pelagic carbonates filling an intraplatform basin formed during Jurassic rifting. Oriented obliquely to the regional NW-SE trend of Cenozoic thrusts and extensional faults, the basin's eastern boundary fault system, striking N-S, played a pivotal role in structuring orogenic and post-orogenic features. Large tracts of the fault experienced double reactivation: positive inversion during Miocene shortening, and negative during post-orogenic extension. Double reactivation is evidenced by older-on-younger extensional contacts, and by the change in orientation of thrusts and recent extensional faults from NW-SE to NNW-SSE, the latter being consistent with the trend of Jurassic rift-related structures of the area. This structural interplay highlights the importance of Jurassic faults and their ability in forcing the structural trends, by surviving across multiple deformation stages, even controlling active extensional seismicity.

Long live the fault! Double inversion of a Mesozoic rift‐related fault system in the central Apennines / Mercuri, Marco; Tavani, Stefano; Fabbi, Simone; Lavosi, Giovanni; Carminati, Eugenio. - In: TERRA NOVA. - ISSN 0954-4879. - (2024). [10.1111/ter.12718]

Long live the fault! Double inversion of a Mesozoic rift‐related fault system in the central Apennines

Mercuri, Marco
Primo
;
Fabbi, Simone;Lavosi, Giovanni;Carminati, Eugenio
2024

Abstract

The San Potito area in central Apennines (Italy), enclosed within the Latium-Abruzzi carbonate platform, exposes anomalously pelagic carbonates filling an intraplatform basin formed during Jurassic rifting. Oriented obliquely to the regional NW-SE trend of Cenozoic thrusts and extensional faults, the basin's eastern boundary fault system, striking N-S, played a pivotal role in structuring orogenic and post-orogenic features. Large tracts of the fault experienced double reactivation: positive inversion during Miocene shortening, and negative during post-orogenic extension. Double reactivation is evidenced by older-on-younger extensional contacts, and by the change in orientation of thrusts and recent extensional faults from NW-SE to NNW-SSE, the latter being consistent with the trend of Jurassic rift-related structures of the area. This structural interplay highlights the importance of Jurassic faults and their ability in forcing the structural trends, by surviving across multiple deformation stages, even controlling active extensional seismicity.
2024
Apennines; fault reactivation; rifting; tectonic inversion; thrusting
01 Pubblicazione su rivista::01a Articolo in rivista
Long live the fault! Double inversion of a Mesozoic rift‐related fault system in the central Apennines / Mercuri, Marco; Tavani, Stefano; Fabbi, Simone; Lavosi, Giovanni; Carminati, Eugenio. - In: TERRA NOVA. - ISSN 0954-4879. - (2024). [10.1111/ter.12718]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/1710870
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