6533b854fe1ef96bd12ae127
RESEARCH PRODUCT
Geochemistry of phosphatic nodules as a tool for understanding depositional and taphonomical settings in a paleolithic cave site (San teodoro, Sicily)
Pierluigi RosinaRenato GiarrussoAngelo MuloneVittorio GarilliLaura BonfiglioMirko Andrea VizziniLuca SineoValeria La ParolaMassimiliana Pinto VracaGerlando Vitasubject
geographygeography.geographical_feature_categoryVarisciteGeochemistryGeologyCave taphonomySettore BIO/08 - AntropologiaSedimentary depositional environmentPhosphate nodulesGeochemistryCavePaleolithicGuanoBat guanoGeologyEarth-Surface Processesdescription
Interpreting depositional settings of cave sites is generally problematic, especially in absence of palaeontological/archaeological evidence. This is the case of some deposits at San Teodoro Cave (Sicily), a key site for the Mediterranean Palaeolithic. 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-palaeoecological approach in defining stratigraphy and palaeoenvironmental 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.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2021-09-01 |