University Librarian Centre | University of Cagliari
UniCA Eprints

Ricostruzione paleoclimatica attraverso l'analisi di uno speleotema nella Sardegna centro-orientale: risultati preliminari

De Muro, Sandro - De Waele, Jo - Longinelli, Antonio (2006) Ricostruzione paleoclimatica attraverso l'analisi di uno speleotema nella Sardegna centro-orientale: risultati preliminari. Rendiconti del Seminario della Facoltà di Scienze dell'Università di Cagliari, 76 (1-2). pp. 69-79. ISSN 0370727X

[img]
Preview
PDF - Published Version
4053Kb

Official URL: http://www.unica.it/scienzemfn/fileadmin/Documenti...

Abstract

This paper, carried out in the framework of a local project 60% «Pleistocene-Holocene palaeoclimate and palaeogeography reconstructions based on marine and continental deposits of Sardinia» (Resp. Prof. Sandro De Muro) and within a series of researches involving several bodies (Archaeological Superintendence of NU/SS, Universities of Parma and Cagliari) and caving associations (Gruppo Speleo Ambientale Sassari, Gruppo Speleo-Archeologico Giovanni Spano of Cagliari, Unione Speleologica Cagliaritana and Gruppo Archeo Speleo Ambientale Urzulei), reports the first results of a palaeo-climate study carried out on a stalagmite sampled in the Su Palu cave, Codula Ilune, Urzulei (Central-East Sardinia). This stalagmite has been subjected to radiometric U/Th dating and stable isotope δ180 and δ 13C analysis. These isotopic data based on 139 samples showed a general increase in stable isotope ratios that would indicate a growth of the concretion in a period of global warming (Upper Pleistocene- Holocene?). The chronological setting by means of U/Th datings, unfortunately, did not allow to define the exact timeframe because of the presence of detrital Thorium. C14 analysis are under way to try to obtain information on the time during which the stalagmite growed.

Item Type:Article
Date:2006
Institution:Universita' degli Studi di Cagliari
Divisions:Centri > Seminario Scientifico della Facolta' di Scienze MM.FF.NN.
Subjects:Area 04 - Scienze della terra > GEO/02 Geologia stratigrafica e sedimentologica
Uncontrolled Keywords:Su Palu cave, Codula Ilune, Urzulei, Sardinia,palaeo-climate.
ID Code:105
Deposited On:03 Nov 2008 11:29

Repository Staff Only: item control page