TY - JOUR
T1 - Paleochannel and beach-bar palimpsest topography as initial substrate for coralligenous buildups offshore Venice, Italy
AU - Tosi, Luigi
AU - Zecchin, Massimo
AU - Franchi, Fulvio
AU - Bergamasco, Andrea
AU - Da Lio, Cristina
AU - Baradello, Luca
AU - Mazzoli, Claudio
AU - Montagna, Paolo
AU - Taviani, Marco
AU - Tagliapietra, Davide
AU - Carol, Eleonora
AU - Franceschini, Gianluca
AU - Giovanardi, Otello
AU - Donnici, Sandra
PY - 2017/12/1
Y1 - 2017/12/1
N2 - 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.
AB - 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.
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U2 - 10.1038/s41598-017-01483-z
DO - 10.1038/s41598-017-01483-z
M3 - Article
AN - SCOPUS:85018243636
SN - 2045-2322
VL - 7
JO - Scientific Reports
JF - Scientific Reports
IS - 1
M1 - 1321
ER -
