Sr-ISOTOPE RATIOS OF A SOIL PROFILE (BADLANDS) NEAR RADICOFANI (SOUTHERN TUSCANY)

Castorina, Francesca; IGAG-CNR, C/O Dipart. Di Scienze Della Terra, Università “La Sapienza”, Roma, Galiano, Mariachiara; Dipartimento Di Scienze Della Terra, Università “La Sapienza”, Roma & Masi, Umberto; Dipartimento Di Scienze Della Terra, Università “La Sapienza”, Roma
The Sr/Ca ratios and Sr-isotope ratios of bulk samples and acetate extracts from a soil profile developed on Pliocene marine clays near Radicofani, in southern Tuscany, were determined. The uniform Sr/Ca ratios in the soil indicated a uniform distribution of the two elements throughout the profile. In contrast, the lower Sr/Ca ratios of acetate extracts from the upper horizons of the soil suggest preferential removal of Sr relative to Ca, perhaps by the plants. These...