Hydrochemical mercury distribution and air-sea exchange over the submarine hydrothermal vents off-shore Panarea Island (Aeolian arc, Tyrrhenian Sea)

2017 ◽  
Vol 194 ◽  
pp. 63-78 ◽  
Author(s):  
E. Bagnato ◽  
E. Oliveri ◽  
A. Acquavita ◽  
S. Covelli ◽  
E. Petranich ◽  
...  
Keyword(s):  
Hydrothermal Vents ◽  
Tyrrhenian Sea ◽  
Mercury Distribution ◽  
Aeolian Arc

scholarly journals Alteration and Mineralization Products of the Zannone Giant Pockmark (Zannone Hydrothermal Field, Central Tyrrhenian Sea)

Minerals ◽  
2020 ◽  
Vol 10 (7) ◽  
pp. 581
Author(s):  
Aida Maria Conte ◽  
Letizia Di Bella ◽  
Michela Ingrassia ◽  
Cristina Perinelli ◽  
Eleonora Martorelli
Keyword(s):  
Hydrothermal Alteration ◽  
Amorphous Silica ◽  
Bacterial Communities ◽  
Hydrothermal Vents ◽  
Tyrrhenian Sea ◽  
Base Metals ◽  
Geochemical Composition ◽  
Native Sulfur ◽  
Complete Obliteration ◽  
Fluid Venting

The Zannone Giant Pockmark (ZGP) is a shallow-water (<−150 m) giant depression located on the shelf off Zannone Island (Pontine Archipelago, central Tyrrhenian Sea, Italy), hosting active hydrothermal vents. The ZGP seabed displays different fluid-venting morphologies (pockmarks, lithified pavements, mounds, and cone-shaped structures) and widespread bacterial communities. In this study, we analyzed ROV (Remote Operated Vehicle) images to gain information on seabed geology and the textural, mineralogical, and geochemical composition of authigenic crusts and gravel-sized clasts sampled close to active emissions. ROV images show authigenic dome-shaped crusts composed of native sulfur associated with barite, gypsum, amorphous silica, and secondary hydrothermal minerals (illite–montmorillonite). The gravel-sized clasts are mostly rhyolites strongly affected by hydrothermal alteration (Alteration Index > 88; depletion of some mobile elements and enrichment of some base metals), causing feldspar-destruction, silicification, formation of hydrothermal phyllosilicates, and precipitation of disseminated pyrite. More intense alteration implying the complete obliteration of the primary mineralogy or fabric is represented by quartz-pyrite samples. ZGP seabed morphology and petro-geochemical features of deposits point to the possible occurrence of a sulfide system linked to the degassing of magma similar to that feeding the Pleistocene products of Ponza Island.

scholarly journals Volcanological and petrological evolution of Vulcano island (Aeolian Arc, southern Tyrrhenian Sea)

1997 ◽  
Vol 102 (B4) ◽  
pp. 8021-8050 ◽  
Author(s):  
Gianfilippo De Astis ◽  
Luigi La Volpe ◽  
Angelo Peccerillo ◽  
Lucia Civetta
Keyword(s):  
Tyrrhenian Sea ◽  
Vulcano Island ◽  
Aeolian Arc ◽  
Southern Tyrrhenian Sea

Benthic foraminifera from a recent, shallow-water hydrothermal environment in the Aeolian Arc (Tyrrhenian Sea)

2005 ◽  
Vol 218 (1-4) ◽  
pp. 207-229 ◽  
Author(s):  
Giuliana Panieri ◽  
Fabiano Gamberi ◽  
Michael Marani ◽  
Roberto Barbieri
Keyword(s):  
Shallow Water ◽  
Benthic Foraminifera ◽  
Tyrrhenian Sea ◽  
Aeolian Arc ◽  
Hydrothermal Environment

Volcanological implications of crystal-chemical variations in clinopyroxenes from the Aeolian Arc, Southern Tyrrhenian Sea (Italy)

2001 ◽  
Vol 63 (1) ◽  
pp. 73-82 ◽  
Author(s):  
Sabrina Nazzareni ◽  
Gianmario Molin ◽  
Angelo Peccerillo ◽  
Pier Zanazzi
Keyword(s):  
Tyrrhenian Sea ◽  
Crystal Chemical ◽  
Aeolian Arc ◽  
Southern Tyrrhenian Sea
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