A Last Interglacial record of environmental changes from the Sulmona Basin (central Italy)
Here we present a multiproxy record (δ13C, δ18O, major and minor element composition, mineralogy, and low-resolution biogenic silica content) from a lacustrine succession in the Sulmona Basin, central Italy. Based on previous tephrochronological constraints and a new 40Ar/39Ar dating of a tephra mat...
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ftunivwollongong:oai:ro.uow.edu.au:smhpapers-5918 2023-05-15T17:31:35+02:00 A Last Interglacial record of environmental changes from the Sulmona Basin (central Italy) Regattieri, Eleonora Giaccio, Biagio Nomade, Sebastien Francke, Alexander Vogel, Hendrik Drysdale, Russell N Perchiazzi, Natale Wagner, Bernd Gemelli, Maurizio Mazzini, Ilaria 2017-01-01T08:00:00Z https://ro.uow.edu.au/smhpapers/4869 unknown Research Online https://ro.uow.edu.au/smhpapers/4869 Faculty of Science, Medicine and Health - Papers: part A interglacial record environmental last changes italy) sulmona basin (central Medicine and Health Sciences Social and Behavioral Sciences article 2017 ftunivwollongong 2020-02-25T11:42:21Z Here we present a multiproxy record (δ13C, δ18O, major and minor element composition, mineralogy, and low-resolution biogenic silica content) from a lacustrine succession in the Sulmona Basin, central Italy. Based on previous tephrochronological constraints and a new 40Ar/39Ar dating of a tephra matching the widespread X-6 tephra, the record spans the ca. 129-92 ka period and documents at sub-orbital scale the climatic and environmental changes over the Last Interglacial and its transition to the Last Glacial period. The δ18O composition is interpreted as a proxy for the amount and seasonality of local precipitation, whereas variations in elemental and mineralogical composition are inferred to reflect climatic-driven changes in clastic sediment input. The observed variations are consistent among the different proxies, and indicate that periods of reduced precipitation were marked by enhanced catchment erosion, probably due to a reduction in vegetation cover. The first part of the Last Interglacial shows the most negative δ18O values. Comparison with pollen records from the Mediterranean suggests a greater seasonality of the precipitation at this time. At millennial-to-centennial time scales, comparison of the Sulmona record with speleothem δ18O records from central Italy highlights a highly coherent pattern of hydrological evolution, with enhanced variability and similar events of reduced precipitation consistently recorded by each isotope record. The observed intra-interglacial variability can potentially be linked, within the uncertainties associated with each age model, to similar variations observed in sea-surface temperature records from the Mediterranean and the North Atlantic, suggesting a link between Mediterranean hydrology and North Atlantic temperature and circulation patterns that persists during periods of low ice volume. Article in Journal/Newspaper North Atlantic University of Wollongong, Australia: Research Online |
institution |
Open Polar |
collection |
University of Wollongong, Australia: Research Online |
op_collection_id |
ftunivwollongong |
language |
unknown |
topic |
interglacial record environmental last changes italy) sulmona basin (central Medicine and Health Sciences Social and Behavioral Sciences |
spellingShingle |
interglacial record environmental last changes italy) sulmona basin (central Medicine and Health Sciences Social and Behavioral Sciences Regattieri, Eleonora Giaccio, Biagio Nomade, Sebastien Francke, Alexander Vogel, Hendrik Drysdale, Russell N Perchiazzi, Natale Wagner, Bernd Gemelli, Maurizio Mazzini, Ilaria A Last Interglacial record of environmental changes from the Sulmona Basin (central Italy) |
topic_facet |
interglacial record environmental last changes italy) sulmona basin (central Medicine and Health Sciences Social and Behavioral Sciences |
description |
Here we present a multiproxy record (δ13C, δ18O, major and minor element composition, mineralogy, and low-resolution biogenic silica content) from a lacustrine succession in the Sulmona Basin, central Italy. Based on previous tephrochronological constraints and a new 40Ar/39Ar dating of a tephra matching the widespread X-6 tephra, the record spans the ca. 129-92 ka period and documents at sub-orbital scale the climatic and environmental changes over the Last Interglacial and its transition to the Last Glacial period. The δ18O composition is interpreted as a proxy for the amount and seasonality of local precipitation, whereas variations in elemental and mineralogical composition are inferred to reflect climatic-driven changes in clastic sediment input. The observed variations are consistent among the different proxies, and indicate that periods of reduced precipitation were marked by enhanced catchment erosion, probably due to a reduction in vegetation cover. The first part of the Last Interglacial shows the most negative δ18O values. Comparison with pollen records from the Mediterranean suggests a greater seasonality of the precipitation at this time. At millennial-to-centennial time scales, comparison of the Sulmona record with speleothem δ18O records from central Italy highlights a highly coherent pattern of hydrological evolution, with enhanced variability and similar events of reduced precipitation consistently recorded by each isotope record. The observed intra-interglacial variability can potentially be linked, within the uncertainties associated with each age model, to similar variations observed in sea-surface temperature records from the Mediterranean and the North Atlantic, suggesting a link between Mediterranean hydrology and North Atlantic temperature and circulation patterns that persists during periods of low ice volume. |
format |
Article in Journal/Newspaper |
author |
Regattieri, Eleonora Giaccio, Biagio Nomade, Sebastien Francke, Alexander Vogel, Hendrik Drysdale, Russell N Perchiazzi, Natale Wagner, Bernd Gemelli, Maurizio Mazzini, Ilaria |
author_facet |
Regattieri, Eleonora Giaccio, Biagio Nomade, Sebastien Francke, Alexander Vogel, Hendrik Drysdale, Russell N Perchiazzi, Natale Wagner, Bernd Gemelli, Maurizio Mazzini, Ilaria |
author_sort |
Regattieri, Eleonora |
title |
A Last Interglacial record of environmental changes from the Sulmona Basin (central Italy) |
title_short |
A Last Interglacial record of environmental changes from the Sulmona Basin (central Italy) |
title_full |
A Last Interglacial record of environmental changes from the Sulmona Basin (central Italy) |
title_fullStr |
A Last Interglacial record of environmental changes from the Sulmona Basin (central Italy) |
title_full_unstemmed |
A Last Interglacial record of environmental changes from the Sulmona Basin (central Italy) |
title_sort |
last interglacial record of environmental changes from the sulmona basin (central italy) |
publisher |
Research Online |
publishDate |
2017 |
url |
https://ro.uow.edu.au/smhpapers/4869 |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
Faculty of Science, Medicine and Health - Papers: part A |
op_relation |
https://ro.uow.edu.au/smhpapers/4869 |
_version_ |
1766129232550821888 |