Publication Date:
2024-03-12
Description:
The late Miocene Monte Capanne and Porto Azzurro plutons are investigated by means of coupled U-Pb zircon and 40Ar/39Ar white mica dating to test the occurrence of long-lived magmatic systems in the upper crust. Zircon crystallized for 〉 1 Myr in both plutonic systems, with supersolidus conditions overlapping for ~220 kyr indicating previously unrecognized co-existence of the two reservoirs. The development of the Porto Azzurro high T-aureole is post-dated by continuous igneous zircon crystallization until ~ 6.0 Ma. By linking crystallization to post-emplacement cooling of late-stage pulses in both western and eastern Elba we constrain long-lived sizeable reservoirs (possibly the same reservoir) in the Tyrrhenian upper crust between ~8 and 6 Ma.
Description:
In press
Description:
OST1 Alla ricerca dei Motori Geodinamici
Description:
JCR Journal
Keywords:
40Ar/39Ar white mica dating
;
Elba Island
;
long-lived magma reservoirs
;
U–Pb zircon dating
;
MioceneTyrrhenian crust
;
upper crustal granites
;
04. Solid Earth
Repository Name:
Istituto Nazionale di Geofisica e Vulcanologia (INGV)
Type:
article
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