Tables A1 and A2 are to be archived at the World Data Center-A for Marine Geology and Geophysics, NOAA/NGDC, 325, Broadway, Boulder (CO). Table A1 is entitled "Main framework composition and provenances of modern Tyrrhenian sands." Table A2 is entitled "Dense mineral suites and provenance types for modern Tyrrhenian sands." Authors are all at : Dipartimento di Scienze Geologiche e Geotecnologie, Università di Milano-Bicocca, Piazza della Scienza 4, 20126 Milano, Italy e-mail: eduardo.garzanti@unimib.it Senior Author is also affiliated to : Centro Studi Geodinamica Alpina e Quaternaria, C.N.R., Via Mangiagalli 34, 20133 Milano, Italy Garzanti E., Canclini S., Moretti Foggia F. & Petrella N., 2002, Unraveling magmatic and orogenic provenances in modern sands: the back-arc side of the Apennine thrust-belt (Italy). Journal of Sedimentary Research, v. 72, p. 2-17.