Geochemistry of phosphatic nodules as a tool for understanding depositional and taphonomical settings in a paleolithic cave site (San teodoro, Sicily)

Luca Sineo, Pierluigi Rosina, Angelo Mulone, Gerlando Vita, Massimiliana Pinto Vraca, Mirko Andrea Vizzini, Angelo Mulone, Renato Giarrusso, Laura Bonfiglio, Valeria La Parola, Vittorio Garilli, Valeria La Parola, Vittorio Garilli

Risultato della ricerca: Articlepeer review

Abstract

Interpreting depositional settings of cave sites is generally problematic, especially in absence of paleontological/archaeological evidence. This is the case of some deposits at San Teodoro Cave (Sicily), a key site for the Mediterranean Paleolithic. In a stratigraphic level interrupted by a carbonatic concretion, phosphatic nodules are present only in the part enclosed between the concretion and the cave wall. The discovery of these nodules combined with the punctual lack of fossils had initially suggested an erosion phenomenon and subsequent formation of nodules at a vadose level. Here we show the usefulness of an integrated, geochemical-paleoecological approach in defining stratigraphy and paleoenvironmental reconstructions. XRD, ICP-OES, ATR-FTIR and EDS analyses allowed the formulation of a new hypothesis regarding the origin of the nodules, the depositional dynamics, and the role played by the guano produced by an extensive colony of bats. The role of barium and rubidium in detecting taphonomical processes has been highlighted.
Lingua originaleEnglish
pagine (da-a)249-261
Numero di pagine13
RivistaInternational Journal of Speleology
Volume50
Stato di pubblicazionePublished - 2021

All Science Journal Classification (ASJC) codes

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  • ???subjectarea.asjc.1900.1904???

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