Universität zu Köln

Regattieri, Eleonora ORCID: 0000-0003-0089-4027, Giaccio, Biagio ORCID: 0000-0002-7007-9127, Nomade, Sebastien, Francke, Alexander ORCID: 0000-0002-0370-5802, Vogel, Hendrik ORCID: 0000-0002-9902-8120, Drysdale, Russell N., Perchiazzi, Natale ORCID: 0000-0003-3229-2282, Wagner, Bernd ORCID: 0000-0002-1369-7893, Gemelli, Maurizio ORCID: 0000-0001-5621-0339, Mazzini, Ilaria ORCID: 0000-0003-2164-7826, Boschi, Chiara, Galli, Paolo and Peronace, Edoardo (2017). A Last Interglacial record of environmental changes from the Sulmona Basin (central Italy). Paleogeogr. Paleoclimatol. Paleoecol., 472. S. 51 - 67. AMSTERDAM: ELSEVIER SCIENCE BV. ISSN 1872-616X

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Abstract

Here we present a multiproxy record (delta C-13, delta O-18, 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 Ar-40/Ar-39 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 6180 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 delta O-18 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 delta O-18 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. (C) 2017 Elsevier B.V. All rights reserved.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Regattieri, Eleonora UNSPECIFIED orcid.org/0000-0003-0089-4027 UNSPECIFIED Giaccio, Biagio UNSPECIFIED orcid.org/0000-0002-7007-9127 UNSPECIFIED Nomade, Sebastien UNSPECIFIED UNSPECIFIED UNSPECIFIED Francke, Alexander UNSPECIFIED orcid.org/0000-0002-0370-5802 UNSPECIFIED Vogel, Hendrik UNSPECIFIED orcid.org/0000-0002-9902-8120 UNSPECIFIED Drysdale, Russell N. UNSPECIFIED UNSPECIFIED UNSPECIFIED Perchiazzi, Natale UNSPECIFIED orcid.org/0000-0003-3229-2282 UNSPECIFIED Wagner, Bernd UNSPECIFIED orcid.org/0000-0002-1369-7893 UNSPECIFIED Gemelli, Maurizio UNSPECIFIED orcid.org/0000-0001-5621-0339 UNSPECIFIED Mazzini, Ilaria UNSPECIFIED orcid.org/0000-0003-2164-7826 UNSPECIFIED Boschi, Chiara UNSPECIFIED UNSPECIFIED UNSPECIFIED Galli, Paolo UNSPECIFIED UNSPECIFIED UNSPECIFIED Peronace, Edoardo UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-233888
DOI:	10.1016/j.palaeo.2017.02.013
Journal or Publication Title:	Paleogeogr. Paleoclimatol. Paleoecol.
Volume:	472
Page Range:	S. 51 - 67
Date:	2017
Publisher:	ELSEVIER SCIENCE BV
Place of Publication:	AMSTERDAM
ISSN:	1872-616X
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language STABLE-ISOTOPE RECORD; ATLANTIC DEEP-WATER; SUBORBITAL CLIMATE VARIABILITY; LAKE OHRID MACEDONIA; AQUIFER GRAN-SASSO; CAVE APUAN ALPS; NORTH-ATLANTIC; MEDITERRANEAN BASIN; TEPHROCHRONOLOGICAL RECORD; HYDROLOGICAL CONDITIONS Multiple languages Geography, Physical; Geosciences, Multidisciplinary; Paleontology Multiple languages
Refereed:	Yes
URI:	http://kups.ub.uni-koeln.de/id/eprint/23388