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Detecting the stepwise propagation of the Eastern Sicily thrust belt (Italy): Insight from thermal and thermochronological constraints (Articolo in rivista)

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Detecting the stepwise propagation of the Eastern Sicily thrust belt (Italy): Insight from thermal and thermochronological constraints (Articolo in rivista) (literal)

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Di Paolo L.[1,5], Olivetti V.[1] Corrado S.[1], Aldega L.[2], Balestrieri M.L.[3], Maniscalco R.[4] (2014)
Detecting the stepwise propagation of the Eastern Sicily thrust belt (Italy): Insight from thermal and thermochronological constraints
in TERRA nova (Print); Wiley-Blackwell, Oxford (Regno Unito)
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Di Paolo L.[1,5], Olivetti V.[1] Corrado S.[1], Aldega L.[2], Balestrieri M.L.[3], Maniscalco R.[4] (literal)

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[1] Dipartimento di Scienze, Sezione di Geologia, Università Roma Tre, Rome, 00146, Italy [2] Dipartimento di Scienze della Terra, Sapienza Università di Roma, Rome, 00185, Italy [3] Consiglio Nazionale delle Ricerche, Istituto di Geoscienze e Georisorse, Florence, 50121, Italy [4] Dipartimento di Scienze Biologiche, Geologiche e Ambientali, Università di Catania, Catania, 95129, Italy [5] Exploration and Production Division, Eni S.p.A., San Donato Milanese, Italy (literal)

Titolo

Detecting the stepwise propagation of the Eastern Sicily thrust belt (Italy): Insight from thermal and thermochronological constraints (literal)

Abstract

An extensive dataset of vitrinite reflectance, FTIR parameters on organic matter, illite content in mixed layers illite-smectite, apatite fission tracks and U-Th/He dating has been used to reconstruct the stepwise propagation of the Eastern Sicily fold-and-thrust belt during Late Palaeogene and Neogene times. The results indicate that the fold-and-thrust belt is divisible into two levels of thermal maturity. These levels consist of a less evolved level of thermal maturity that records limited sedimentary burial and minor heating, and a more evolved level of thermal maturity that indicates tectonic burial and exhumation at different times. Deformation and exhumation of shallowly buried units are linked to wedge forward propagation by low-angle thrusts, whereas the evolution of deeply buried units is associated with tectonic imbrications by duplex formation and steep thrusts. The two tectonic styles alternate during evolution of the fold-and-thrust belt under low erosion rates. © 2014 John Wiley & Sons Ltd. (literal)

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