Genesis of carbonate-rich veins in the serpentinites at the Calabria-Lucania boundary (southern Apennines)



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Dichicco, Maria Chiara and Castiñeiras García, Pedro and Galindo Francisco, Mª del Carmen and González Acebrón, Laura (2018) Genesis of carbonate-rich veins in the serpentinites at the Calabria-Lucania boundary (southern Apennines). Rendiconti Online della Società Geologica Italiana, 44 . pp. 143-149. ISSN 2035-8008

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In the northern sector of the Pollino massif (southern Apennines, Italy) well-exposed lens-shaped bodies of serpentinites and sediments of the Frido Unit belonging to the Liguride Complex crop-out. Most serpentinite rocks are cross-cut by carbonate and quartz-carbonate veins with different thickness. This study focuses on petrographic, mineralogical, geochemical, and isotopic analysis of the carbonate veins embedded in serpentinite rocks, collected at the Fosso Arcangelo site and at the Pietrapica quarry (Calabria-Lucanian boundary). The paragenesis of the carbonate veins from the Fosso Arcangelo site is dominantly made by calcite and aragonite with minor amount of rhodochrosite. In quartz-carbonate veins from Pietrapica quarry, dolomite, Mg-calcite, quartz, with minor ankerite were observed. The ?13CV-PDB isotope ratios of carbonates in the carbonate veins are in the range from +2.16? to -3.66? and corresponding ?18OV-SMOW values are between +15.02? and +21.53?. The ?13CV-PDB values of carbonates in quartz-carbonate veins are in the range from -3.60? to -1.78? and the corresponding ?18OV-SMOW average value is around +21.3?. The results suggest that the carbonate at both site occurredunder the same environmental conditions from crustal-derived and low-moderate temperatures hydrothermal fluids having different chemical composition.

Item Type:Article
Uncontrolled Keywords:Carbonate and quartz-carbonate veins, serpentinite rocks, southern Apennines
Subjects:Sciences > Geology > Mineralogy
Sciences > Geology > Petrology
ID Code:51138
Deposited On:07 Feb 2019 18:10
Last Modified:07 Feb 2019 18:10

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