Publikationsdatum:
2023-02-27
Beschreibung:
In their paper, Spiess et al. (2021) published structural, geochronological, and EBSD data on one of the monzogranite
apophyses (Capo Bianco) of the buried Porto Azzurro Pluton (island of Elba, Northern Apennines,
Italy), a pluton emplaced in the upper crust (P 〈 0.2 GPa; e.g. Papeschi et al., 2019). The authors published a new
U/Pb age of 6.4 ± 0.4 Ma, associated with the thermal peak, and a U-Th/He apatite age of 5.0 ± 0.6 Ma,
indicating cooling below 60 ◦C. Spiess et al. (2021) use these ages to model the exhumation of the pluton
controlled, in their model, by the Zuccale Fault, a subhorizontal fault with 6 km of eastward displacement (ZF;
Keller & Coward, 1996). Their structural dataset from the macro to the microscale and EBSD analyses relies on a
small section (about 100 m wide) in the NE part of the Calamita Peninsula. Based on their documentation of (1)
vertical dykes in the monzogranite, (2) vertical to low-angle top-to-the-E extensional faults, and (3) later NWstriking
oblique faults, they interpret the Porto Azzurro Pluton as emplaced in an extensional to transcurrent
tectonic setting, extrapolating their findings to the entire Eastern Elba.
Beschreibung:
Published
Beschreibung:
104499
Beschreibung:
1T. Struttura della Terra
Beschreibung:
JCR Journal
Schlagwort(e):
Upper crustal deformation
;
Magmatic intrusion
;
04.04. Geology
Repository-Name:
Istituto Nazionale di Geofisica e Vulcanologia (INGV)
Materialart:
article
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