Relative sea level change in western Istria (Croatia) during the last millennium
| Autor: | Vladimir Kovačić, Fabrizio Antonioli, Stefano Furlani, Sanja Faivre, Matthieu Ghilardi, Eric Fouache |
|---|---|
| Přispěvatelé: | Faivre, Sanja, Fouache, Eric, Ghilardi, Matthieu, Antonioli, Fabrizio, Furlani, Stefano, Kovačić, Vladimir |
| Jazyk: | angličtina |
| Rok vydání: | 2011 |
| Předmět: |
Sea level change
010506 paleontology Croatia Earth-Surface Processes sea level changes Croatia Istria 010502 geochemistry & geophysics 01 natural sciences Deposition (geology) law.invention law Peninsula Sea-level curve Holocene sea-level changes 14C dating malacofaunal identification grain-size analysis Adriatic Sea 14. Life underwater Radiocarbon dating sea level changes Istria 0105 earth and related environmental sciences Earth-Surface Processes geography Tectonic subsidence geography.geographical_feature_category Sedimentation Oceanography 13. Climate action Bay Geology |
| Popis: | The paper deals with the relative sea level change which occurred along the western coast of the Istrian peninsula in Croatia. Sediments from two cores located in the bay of Santa Marina and Soline Bay have been analysed for microfaunal and sedimentological investigations. Chronostratigraphical evidence was obtained from 14C dating of lagoonal shells (gastropods). From the sedimentological and paleo-environmental analysis, 4300 years of continuous deposition in shallow marine environment was determined. At around 550 cal yr BP, marine sedimentation passed to continental. Consequently sedimentation rate of 0.7 mm/yr comes to 2.36 mm/yr after 550 cal yr BP. Those upper deposits of continental origin are today partly submerged. The obtained data were further compared with a geophysical model which allows the prediction of the local sea-level curve. As the results from the cores are largely below the curve, the tectonic subsidence of the area is confirmed. Radiocarbon analysis allowed the age of the shells to be related to the age of the submerged tidal notch that occurs almost continuously some hundreds of meters south-eastwards, from the Gulf of Trieste down to the Dalmatian coast. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|