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Late Pleistocene relic Ultisols and Alfisols in an alluvial fan complex in coastal Tuscany

Carnicelli, Stefano and Benvenuti, Marco and Andreucci, Stefano and Ciampalini, Rossano (2014) Late Pleistocene relic Ultisols and Alfisols in an alluvial fan complex in coastal Tuscany. Quaternary International , in press. ISSN 1040-6182. eISSN 1873-4553. Article.

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DOI: 10.1016/j.quaint.2014.10.009

Abstract

Detailed stratigraphic, sedimentary facies and palaeosol analyses were performed on an outcrop on Late Quaternary deposits in the coastal area of Tuscany. The outcrop was selected as representative of one of the major Quaternary alluvial fan complexes of Central Italy, the ancient Cecina river fan, and as showing contrasting, if related, palaeosols. The oldest relic palaeosol was identified as an Ultisol, representative of the most developed soil type normally found as relic soil in Italy, and about whose possible ages only approximate interpretations presently exist.
OSL dating set the whole succession of sediments, palaeosols and geomorphic surfaces into a firm chronological setting. As a result, evolution of the Cecina fan complex in Late Pleistocene could be fully reconstructed. Assessment of the age of the relic Ultisol produced results contrasting with current interpretations, showing how such a soil type can have developed in Italian conditions in a relatively short time, i.e. since about MIS 5d.

Item Type:Article
ID Code:10588
Status:In Press
Refereed:Yes
Uncontrolled Keywords:Relic Palaeosols, Ultisol, Alfisol, alluvial fan, facies, Tuscany
Subjects:Area 04 - Scienze della terra > GEO/02 Geologia stratigrafica e sedimentologica
Divisions:001 Università di Sassari > 01-a Nuovi Dipartimenti dal 2012 > Scienze della Natura e del Territorio
Publisher:Elsevier Science
ISSN:1040-6182
eISSN:1873-4553
Deposited On:12 Jan 2015 12:42

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