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 Eastern Sicily fold-and-thrust belt propagation during Late Paleogene and Neogene times. 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 tectonically buried and exhumed at different times. Deformation and exhumation of shallow 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 throughout the fold-and-thrust belt evolution under low erosion rates.
|Titolo:||Detecting the stepwise propagation of the Eastern Sicily thrust belt (Italy) insight from thermal and thermochronological constrains|
|Autori interni:||MANISCALCO, ROSANNA|
|Data di pubblicazione:||2014|
|Appare nelle tipologie:||1.1 Articolo in rivista|