Middle and late Pleistocene glaciations in the Campo Felice Basin (central Apennines, Italy) |
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| Authors: | Carlo Giraudi Giulia Bodrato Nicola Cipriani Biagio Giaccio |
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| Institution: | a ENEA, C.R. Casaccia, s.p. Anguillarese, 301, 00123 S. Maria di Galeria, Rome, Italyb Regione Piemonte, Direzione OO.PP.-Difesa del Suolo-Ec.Mont.For., Via Petrarca 44, 10126, Turin, Italyc Department of Earth Sciences, University of Bologna, Piazza di Porta San Donato 1, 40126 Bologna, Italyd Department of Earth Sciences, University of Florence, Via La Pira 4, 50121 Florence, Italye University of Milan “Bicocca”, Piazza della Scienza 4, 20126 Milan, Italyf IGAG-CNR, Via Bolognola 7, 00138 Rome, Italyg Universität Bern, Baltzerstrasse 3, 3012 Bern, Switzerland |
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| Abstract: | The present paper refers to research conducted in the tectonic-karst depression of Campo Felice in the central Apennines (Italy), in which glacial, alluvial and lacustrine sediments have been preserved. Stratigraphic interpretations of sediments underlying the Campo Felice Plain are based on evidence obtained from nine continuous-core boreholes. The boreholes reach a depth of 120 m and provide evidence of five sedimentation cycles separated by erosion surfaces. Each cycle is interpreted as an initial response to a mainly warm stage, characterized by low-energy alluvial and colluvial deposition, pedogenesis, and limited episodes of marsh formation. In turn, a mainly cold stage follows during which a lake formed, and glaciers developed and expanded, leading to deposition of glacial and fluvioglacial deposits. The chronological framework is established by eleven accelerator mass spectrometer 14C ages and three 39Ar-40Ar ages on leucites from interbedded tephra layers. These age determinations indicate five glacial advances that respectively occurred during marine oxygen isotope stages 2, 3-4, 6, 10 and 14. |
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| Keywords: | Middle and late Pleistocene glaciations Stratigraphy Lacustrine sediments Tephra layers 14C and 39Ar-40Ar datings Apennine chain Mediterranean basin |
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