Pregled bibliografske jedinice broj: 1257005
Late Pleistocene and Holocene paleoenvironments of a submerged karst landform (Pirovac bay, Croatia)
Late Pleistocene and Holocene paleoenvironments of a submerged karst landform (Pirovac bay, Croatia) // International Conference on Seafloor Landforms, Processes and Evolution
Valletta, Malta, 2022. str. 94-94 (predavanje, međunarodna recenzija, sažetak, znanstveni)
CROSBI ID: 1257005 Za ispravke kontaktirajte CROSBI podršku putem web obrasca
Naslov
Late Pleistocene and Holocene paleoenvironments of a
submerged karst landform (Pirovac bay, Croatia)
Autori
Miko, S. ; Ilijanić N. ; Brunović D. ; Hasan O. ; Hajek Tadesse V. ; Razum I.
Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni
Skup
International Conference on Seafloor Landforms, Processes and Evolution
Mjesto i datum
Valletta, Malta, 04.07.2022. - 06.07.2022
Vrsta sudjelovanja
Predavanje
Vrsta recenzije
Međunarodna recenzija
Ključne riječi
karst basin, karst paleolake, submerged landscape, seismic stratigraphy, late glacial, Holocene, Adriatic Sea
Sažetak
The Pirovac Bay karst depression in central Dalmatia is up to 25 m deep is partially separated from the Adriatic Sea by a series of islands and shallow sills (< 5m). The present-day marine bay was studied using bathymetric and sub-bottom profiles to reconstruct the basin-wide sedimentation. A 7.2 m sediment core spanning the last 14.500 cal yr BP was analyzed. The seismic data identified up to 12 m of sediments in the deepest parts of the bay. Distinct seismic- stratigraphic units are interpreted as records floodplain, lacustrine environments, brackish to lagoonal environments, and finally a marine environment with a connection to the open sea. The marine-lacustrine transition was dated at 7.500 cal. yr BP using ostracod and foraminifera data. A freshwater lake was established sometime after 14.000 cal yr BP due to sea level rise and the lake was by karst springs from the neighboring Vrana polje (today Vrana lake). The karst lake in Pirovac Bay coexisted with the newly formed Vrana lake in the hinterland from 8.000 to 7.500 cal yr BP. The sea level rise plays an important role in controlling the sedimentation changes and formation of coastal lakes along the karst coast of the Adriatic Sea. There are uncertainties in timing of the freshwater/marine transition and its relation to relative sea level rise since the karst is permeable and the marine conditions could have been established before the flooding of the basin. This work was supported by the Croatian Science Foundation in the project “QMAD” (HRZZ IP-04-2019- 8505).
Izvorni jezik
Engleski
Znanstvena područja
Geologija
POVEZANOST RADA
Projekti:
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HRZZ-IP-2019-04-8505 - Porijeklo i taloženje sedimenata u vrijeme kasno kvartarnih promjena morske razine: Sustav rijeke Krke i Srednjojadranske kotline (QMAD) (Miko, Slobodan, HRZZ - 2019-04) ( CroRIS)
Ustanove:
Hrvatski geološki institut
Profili:
Ozren Hasan
(autor)
Dea Brunović
(autor)
Nikolina Ilijanić
(autor)
Valentina Hajek-Tadesse
(autor)
Slobodan Miko
(autor)
Ivan Razum
(autor)