Paleochannel and beach-bar palimpsest topography as initial substrate for coralligenous buildups offshore Venice, Italy

Abstract We provide a model for the genesis of Holocene coralligenous buildups occurring in the northwestern Adriatic Sea offshore Venice at 17–24 m depth. High-resolution geophysical surveys and underwater SCUBA diving reconnaissance revealed meandering shaped morphologies underneath bio-concretion...

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Autores principales:	Luigi Tosi, Massimo Zecchin, Fulvio Franchi, Andrea Bergamasco, Cristina Da Lio, Luca Baradello, Claudio Mazzoli, Paolo Montagna, Marco Taviani, Davide Tagliapietra, Eleonora Carol, Gianluca Franceschini, Otello Giovanardi, Sandra Donnici
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/08dd3ba15e1b4045aa91204288636bd9
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spelling	oai:doaj.org-article:08dd3ba15e1b4045aa91204288636bd92021-12-02T15:05:01ZPaleochannel and beach-bar palimpsest topography as initial substrate for coralligenous buildups offshore Venice, Italy10.1038/s41598-017-01483-z2045-2322https://doaj.org/article/08dd3ba15e1b4045aa91204288636bd92017-05-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-01483-zhttps://doaj.org/toc/2045-2322Abstract We provide a model for the genesis of Holocene coralligenous buildups occurring in the northwestern Adriatic Sea offshore Venice at 17–24 m depth. High-resolution geophysical surveys and underwater SCUBA diving reconnaissance revealed meandering shaped morphologies underneath bio-concretionned rocky buildups. These morphologies are inferred to have been inherited from Pleistocene fluvial systems reactivated as tidal channels during the post- Last Glacial Maximum transgression, when the study area was a lagoon protected by a sandy barrier. The lithification of the sandy fossil channel-levee systems is estimated to have occurred at ca. 7 cal. ka BP, likely due to the interaction between marine and less saline fluids related to onshore freshwater discharge at sea through a sealed water-table. The carbonate-cemented sandy layers served as nucleus for subsequent coralligenous buildups growth.Luigi TosiMassimo ZecchinFulvio FranchiAndrea BergamascoCristina Da LioLuca BaradelloClaudio MazzoliPaolo MontagnaMarco TavianiDavide TagliapietraEleonora CarolGianluca FranceschiniOtello GiovanardiSandra DonniciNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-10 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Luigi Tosi Massimo Zecchin Fulvio Franchi Andrea Bergamasco Cristina Da Lio Luca Baradello Claudio Mazzoli Paolo Montagna Marco Taviani Davide Tagliapietra Eleonora Carol Gianluca Franceschini Otello Giovanardi Sandra Donnici Paleochannel and beach-bar palimpsest topography as initial substrate for coralligenous buildups offshore Venice, Italy
description	Abstract We provide a model for the genesis of Holocene coralligenous buildups occurring in the northwestern Adriatic Sea offshore Venice at 17–24 m depth. High-resolution geophysical surveys and underwater SCUBA diving reconnaissance revealed meandering shaped morphologies underneath bio-concretionned rocky buildups. These morphologies are inferred to have been inherited from Pleistocene fluvial systems reactivated as tidal channels during the post- Last Glacial Maximum transgression, when the study area was a lagoon protected by a sandy barrier. The lithification of the sandy fossil channel-levee systems is estimated to have occurred at ca. 7 cal. ka BP, likely due to the interaction between marine and less saline fluids related to onshore freshwater discharge at sea through a sealed water-table. The carbonate-cemented sandy layers served as nucleus for subsequent coralligenous buildups growth.
format	article
author	Luigi Tosi Massimo Zecchin Fulvio Franchi Andrea Bergamasco Cristina Da Lio Luca Baradello Claudio Mazzoli Paolo Montagna Marco Taviani Davide Tagliapietra Eleonora Carol Gianluca Franceschini Otello Giovanardi Sandra Donnici
author_facet	Luigi Tosi Massimo Zecchin Fulvio Franchi Andrea Bergamasco Cristina Da Lio Luca Baradello Claudio Mazzoli Paolo Montagna Marco Taviani Davide Tagliapietra Eleonora Carol Gianluca Franceschini Otello Giovanardi Sandra Donnici
author_sort	Luigi Tosi
title	Paleochannel and beach-bar palimpsest topography as initial substrate for coralligenous buildups offshore Venice, Italy
title_short	Paleochannel and beach-bar palimpsest topography as initial substrate for coralligenous buildups offshore Venice, Italy
title_full	Paleochannel and beach-bar palimpsest topography as initial substrate for coralligenous buildups offshore Venice, Italy
title_fullStr	Paleochannel and beach-bar palimpsest topography as initial substrate for coralligenous buildups offshore Venice, Italy
title_full_unstemmed	Paleochannel and beach-bar palimpsest topography as initial substrate for coralligenous buildups offshore Venice, Italy
title_sort	paleochannel and beach-bar palimpsest topography as initial substrate for coralligenous buildups offshore venice, italy
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/08dd3ba15e1b4045aa91204288636bd9
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Paleochannel and beach-bar palimpsest topography as initial substrate for coralligenous buildups offshore Venice, Italy

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