A Paleoenvironmental Reconstruction of Lake Vrana on the Island of Cres (Croatia) Based on the Geochemistry and Mineralogy of the Late Pleistocene and Holocene Sediments DOI Creative Commons
Nikolina Ilijanić, Slobodan Miko, Ozren Hasan

et al.

Quaternary, Journal Year: 2024, Volume and Issue: 7(4), P. 47 - 47

Published: Oct. 28, 2024

A 7.4 m long sediment core has been retrieved from the central part of Lake Vrana on island Cres to reconstruct paleoenvironmental conditions. is deepest freshwater lake in Croatia, located karst region eastern Adriatic coast. dated sequence 4.4 spanned past 16.4 kyr, and it featured a dynamic deposition until beginning Holocene, including strong input supply by runoff sediments dolomitic origin catchment period 16.4–14.4 cal kyr BP. High organic carbon content, which originates mixed terrestrial aquatic origins periods 14.4–13.3 BP 12.7–11.7 BP, indicates fluctuating levels shallow water environments during Late Glacial Holocene transition. The development more stable conditions continuous deposition, characterized an increasing trend siliciclastic delivered into early (11.7–10 BP) dominantly 8 indicating enhanced erosion, coincides with humid pluvial recorded Mediterranean region. It followed high content between 1.6 points higher productivity. Calcite sedimentation prevailed 0.4 deeper-lake Predominantly, 0.1 pointed erosion Little Ice Age (LIA), precipitation discharge catchment. re-establishment calcite observed over last 100 years.

Language: Английский

Late Glacial and Holocene Paleoenvironmental Reconstruction of the Submerged Karst Basin Pirovac Bay on the Eastern Adriatic Coast DOI Creative Commons
Nikolina Ilijanić, Dea Brunović, Slobodan Miko

et al.

Journal of Marine Science and Engineering, Journal Year: 2025, Volume and Issue: 13(1), P. 175 - 175

Published: Jan. 19, 2025

This study focuses on the analysis of sediment core retrieved from deepest part (25 m) Pirovac Bay. A long sedimentary sequence (7.45 supplemented by a shorter (1.45 shallower bay was analyzed for sedimentological, mineralogical, geochemical, and micropaleontological (ostracod) parameters. The thickness above underlying karst paleorelief (karstic bedrock) is up to 12 m. Sediments recorded transition freshwater marine environment starting post-Neapolitan Yellow Tuff tephra sedimentation. First, floodplain developed in Bay, with intermittent pools ponds, followed wetland environment. formation shallow paleolake during Middle Holocene at 10 cal kyr BP enabled rising sea level high input karstified underground adjacent Lake Vrana (Biograd na Moru). onset intrusions through evident brackish lake Bay basin. Marine transgression flooding occurred 7.3 BP, evidenced geochemical ostracod parameters, providing crucial insights into dynamics coastal inundation under past climate change. Intriguingly, species were still present sediments, brought surficial canal Prosika groundwater discharge (numerous estavelles) along northeastern shores bay, proving their mutual influence. submerged paleolake, reported here first time, underlines sensitivity systems rise serves stress how important understanding these processes effective management zone change adaptation strategies. findings provided evidence supporting existence basins as lakes prior being flooded seawater consequence post-glacial rise.

Language: Английский

Citations

0
Geomorphological evidence of the Malta‐Sicily land‐bridge during the Last Glacial Maximum inferred from seismic profiles DOI Creative Commons
Sofia Rossi, Mariacristina Prampolini,

Charles Galea

et al.

Earth Surface Processes and Landforms, Journal Year: 2025, Volume and Issue: 50(2)

Published: Feb. 1, 2025

Abstract The Last Glacial Maximum (LGM) witnessed substantial sea‐level fluctuations profoundly impacting the geomorphological evolution of Maltese Islands, located in SW part Malta Plateau (central Mediterranean Sea). It is known that during period, a land‐bridge connected Islands to Sicily. However, discerning detailed evidence past changes offshore regions proves difficult due limited availability high‐resolution multibeam bathymetry data, subsurface seismic profiles and potential tectonic influences. By addressing these challenges, this study sets out meticulously reconstruct coastline delineate extent connecting Sicily LGM. was conducted by exploiting 2D multichannel acquired oil exploration surveys carried EMODnet data. This analysis enabled recognition western side LGM, at depth ranging from 119 131 m b.s.l. Uncertainties about location eastern remain quality more intense morphodynamics Plateau. A coastal lagoon system, bounded barrier corresponding structural high, recognized. During transgressional phases, emerged LGM landscape progressively submerged locally sealed thin layer sediments, which still preserves most significant features. With reference stratigraphic sequence, two facies were distinguished, lower one interpreted as pre‐Plio‐Quaternary (pre‐PQ) sequence outcropping Malta, upper consisting Plio‐Quaternary (PQ) deposits onlapping on former one. These results provide valuable insights into palaeoenvironmental history region, contributing broader understanding dynamics geological tectonically complex area.

Language: Английский

Citations

0
Late Quaternary geomorphology and sedimentary processes in the Prološko Blato karst wetland (Imotsko Polje, Croatia) DOI
Ivona Ivkić, Nikolina Ilijanić, Slobodan Miko

et al.

Geomorphology, Journal Year: 2025, Volume and Issue: unknown, P. 109765 - 109765

Published: April 1, 2025

Language: Английский

Citations

0
Paleocoastline modelling – What a difference a few meters of sediment make? DOI Creative Commons
Ana Novak

Quaternary International, Journal Year: 2024, Volume and Issue: 706, P. 49 - 59

Published: July 22, 2024

Paleoreconstructions of coastal and near-coastal areas have always served as a tool towards better understanding past, present future geological geomorphological processes. The reliability paleocoastline sea-land extent modelling is controlled by input data. Here the difference between paleoreconstructions based on present-day bathymetry paleotopographic elevation model are examined example Gulf Trieste (northern Adriatic sea) - low-gradient submerged Last Glacial Maximum alluvial plain with fairly well-resolved pre-transgressional paleotopography. Results presented in this study show striking differences spatial two modelled sets paleocoastlines which places exceeds tens kilometers. These results demonstrate importance using an appropriate geologically-supported for paleoreconstruction unsuitable models can result significant errors unreliable reconstructions. This especially noteworthy settings where even slight variation sea level affect vast areas. Finally, provide insight into Early Holocene evolution area abrupt predominant northeasterly oriented transgression direction indicated from

Language: Английский

Citations

2
Paleoenvironmental reconstruction of Lake Vrana on the Island of Cres (Croatia) based on geochemistry and mineralogy of the Late Pleistocene and Holocene sediments DOI Open Access
Nikolina Ilijanić, Slobodan Miko, Ozren Hasan

et al.

Published: Aug. 29, 2024

A 7.4 m long sediment core has been retrieved from the central part of Lake Vrana on Island Cres to reconstruct paleoenvironmental conditions. is deepest freshwater lake in Croatia, located karst region eastern Adriatic coast. dated sequence 4.4 spans past 16.4 kyr, and features a dynamic deposition until beginning Holocene, including strong input supply by runoff sediments dolomitic origin catchment period 16.4-14.4 cal kyr BP. High organic carbon content, which originates mixed terrestrial aquatic origins periods 14.4-13.3 BP 12.7-11.7 BP, indicates fluctuating levels shallow water environments during late glacial Holocene transition. The development more stable conditions continuous deposition, characterized increasing trend siliciclastic delivered into early (11.7-10 BP), dominantly 8 indicating enhanced erosion, coincides with humid pluvial period, recorded Mediterranean region. It followed high content between 1.6 points higher productivity. Calcite sedimentation prevail 0.4 deeper-lake conditions, while 0.4-0.1 indicate erosion Little Ice Age (LIA), precipitation discharge catchment. re-establishment calcite observed over last 100 years.

Language: Английский

Citations

1
A Paleoenvironmental Reconstruction of Lake Vrana on the Island of Cres (Croatia) Based on the Geochemistry and Mineralogy of the Late Pleistocene and Holocene Sediments DOI Creative Commons
Nikolina Ilijanić, Slobodan Miko, Ozren Hasan

et al.

Quaternary, Journal Year: 2024, Volume and Issue: 7(4), P. 47 - 47

Published: Oct. 28, 2024

A 7.4 m long sediment core has been retrieved from the central part of Lake Vrana on island Cres to reconstruct paleoenvironmental conditions. is deepest freshwater lake in Croatia, located karst region eastern Adriatic coast. dated sequence 4.4 spanned past 16.4 kyr, and it featured a dynamic deposition until beginning Holocene, including strong input supply by runoff sediments dolomitic origin catchment period 16.4–14.4 cal kyr BP. High organic carbon content, which originates mixed terrestrial aquatic origins periods 14.4–13.3 BP 12.7–11.7 BP, indicates fluctuating levels shallow water environments during Late Glacial Holocene transition. The development more stable conditions continuous deposition, characterized an increasing trend siliciclastic delivered into early (11.7–10 BP) dominantly 8 indicating enhanced erosion, coincides with humid pluvial recorded Mediterranean region. It followed high content between 1.6 points higher productivity. Calcite sedimentation prevailed 0.4 deeper-lake Predominantly, 0.1 pointed erosion Little Ice Age (LIA), precipitation discharge catchment. re-establishment calcite observed over last 100 years.

Language: Английский

Citations

1