Abstract
AbstractApatite fission track (AFT) and U‐Th/He analyses (AHe) of detrital minerals from Eocene to Pliocene siliciclastic deposits in the Northern Apennines were here applied to constrain the tectono‐thermal history of the wedge‐top Epiligurian Marzabotto Basin (EMB). Detrital AFT age populations from Eocene to Miocene strata cluster between ~71 and ~58 Ma. AHe ages show a quite variable single grain age distribution ranging from ~104 to ~7 Ma indicating some degree of post‐depositional thermal resetting. Thermal modelling of AFT and AHe data indicates that the EMB experienced a maximum temperature of ~90° prior to Oligocene‐to‐Pliocene cooling. We interpret the Oligocene‐Early Miocene cooling signal to represent rock uplift associated with growth of the Apennines orogenic wedge and the late Miocene‐Quaternary cooling to track frontal accretion in the orogenic wedge concomitant with rollback‐driven extension.
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