Earth-prints repository, logo   DSpace

About DSpace Software
|earth-prints home page | roma library | bologna library | catania library | milano library | napoli library | palermo library
Please use this identifier to cite or link to this item: http://hdl.handle.net/2122/8301

Authors: Zanchetta, G.*
Giraudi, C.*
Sulpizio, R.*
Drysdale, R. N.*
Sadori, L.*
Title: Constraining the onset of the Holocene “Neoglacial” over the central Italy using tephra layers
Title of journal: Quaternary Research
Series/Report no.: 2/78(2012)
Publisher: Elsevier Science Limited
Issue Date: Sep-2012
DOI: 10.1016/j.yqres.2012.05.010
Keywords: Tephrostratigraphy
Holocene
Central Italy
Paleoclimate
Abstract: A study of six tephra layers discovered in different deposits between 1600 and 2700 m a.s.l. in the Apennine chain in central Italy allowed precise stratigraphic constraints on environmental and climatic changes between ca. 4.5 and 3.8 cal ka BP. Chemical analyses allowed the correlation of these tephra layers with the eruptions of Agnano Mt Spina (AMST) from Phlegrean Field and Avellino (AVT) from Somma–Vesuvius. Major environmental changes in the high mountains of the Central Apennines occurred just after the deposition of the AMST and predate the deposition of the AVT. At this time, renewed growth of the Calderone Glacier occurred, marking the onset of the Apennine “Neoglacial”. The presence of the AMST and AVT enabled us to make a precise, physical correlation with other archives in central Italy. Synchronization of records between sites showed that the period intervening the deposition of the AMST and AVT layers coincided with environmental changes that were not always exactly in phase. This highlights the fact that stratigraphic correlations using only radiocarbon chronologies (the most common method used for dating archives during the Holocene) could produce erroneous correlation of events, giving rise to oversimplified paleoclimatic reconstructions.
Appears in Collections:Papers Published / Papers in press
03.01.06. Paleoceanography and paleoclimatology
03.01.99. General or miscellaneous

Files in This Item:

File SizeFormatVisibility
QR_Zanchetta_etal_2012.pdf1.66 MBAdobe PDFonly authorized users View/Open


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.


Share this record
Del.icio.us

Citeulike

Connotea

Facebook

Stumble it!

reddit


 

Valid XHTML 1.0! ICT Support, development & maintenance are provided by CINECA. Powered on DSpace Software. CINECA