High resolution paleo-environmental changes during the Sapropel 1 in the North Ionian Sea, central Mediterranean
Datos Bibliográficos
High-resolution paleoceanographic reconstruction of surface water properties during the most recent Sapropel event (S1) has been carried out by means of quantitative analyses of planktonic foraminiferal assemblages, planktonic foraminiferal oxygen isotopes (δ 18 O) and XRF elemental data from a 655 m depth core recovered in the North Ionian Sea. The results show that the S1 interval presents two distinctive warm phases (S1a and S1b), separated by a cold interruption event (S1i). High resolution faunal and geochemical analyses allow to identify two sub-phases within S1a interval, the oldest one has similar characteristics to S1b interval while the youngest sub-phase has less stratified surface waters with relatively lower nutrient content. The high abundance of Globigerinoides ruber white variety opposite to the low percentages of Neogloboquadrina pachyderma during the pre-S1 phase suggests that the onset of surface waters stratification occurred prior to the beginning of Sapropel deposition, acting as a pre-conditioning phase. Paleo-productivity proxies indicate that the deposition of S1 initiated after an increase in nutrient content, potentially related to increased fluvial inputs. Based on the integrated ecological interpretation of our records we argue that S1a and S1b are characterized as warm, stratified and nutrient rich surface waters in the Ionian Sea, while proxies related to oxygen content indicate dysoxic deep waters linked to a combination of the high nutrient content and stratified water column. The S1 interruption phase is characterized by the entrance of colder waters that caused mixing of the stratified water column and re-ventilation of the deep dysoxic waters
Benthic zone · Deep chlorophyll maximum · Foraminifera · Globigerinoides · Mediterranean climate · Nutrient · Photic zone · Phytoplankton · Plankton · Sapropel · Water column · Geology and Paleoclimatology Research · Marine and environmental studies · Maritime and Coastal Archaeology · Ecology · Geology · Oceanography
Multiproxy ecosystem response of abrupt Holocene climatic changes in the northeastern Mediterranean sedimentary archive and hydrologic regime
Paleoclimatic Record of a Long Deep Sea Core from the Eastern Mediterranean
Modeling a 200-Yr Interruption of the Holocene Sapropel S 1
Centennial-scale climate cooling with a sudden cold event around 8,200 years ago
Holocene atmosphere-ocean interactions
Variability of the western Mediterranean Sea surface temperature during the last 25,000 years and its connection with the Northern Hemisphere climatic changes
Formal ratification of the subdivision of the Holocene Series/Epoch (Quaternary System/Period)
Flexible paleoclimate age-depth models using an autoregressive gamma process
Late Quaternary paleoenvironmental reconstruction and paleoclimatic implications of the Aegean Sea (eastern Mediterranean) based on paleoceanographic indexes and stable isotopes
Integrated stratigraphy for the Late Quaternary in the eastern Tyrrhenian Sea
Holocene climate variability of the Western Mediterranean
IntCal13 and Marine13 Radiocarbon Age Calibration Curves 0–50,000 Years cal BP
Graphitization of Small Carbonate Samples for Paleoceanographic Research at the Godwin Radiocarbon Laboratory, University of Cambridge
| Obras citantes distintas | 1 |
|---|---|
| Citas por año | 0,2 |
| Intervalo de citas | 2021 - 2021 (1) |
| Velocidad de citación | historical |
| Altamente citado | No |
| Tipos de cita | Neutras: 1 |