We are grateful to G. Giorgetti and F. Olmi for support during SEM-EDS investigation at the Dipartimento di Scienze della Terra of Siena and EMP analyses at the Centro Studi per la Minerogenesi e la Geochimica Applicata, CNR, Firenze, respectively. We also thank G. Ferrara for discussing many aspects of this work. The manuscript was improved by careful review by P. Leat and W.C. McIntosh. The argon laserprobe facility was funded by the Programma Nazionale di Ricerche in Antartide (PNRA).
This research used samples and/or data provided by the Ocean Drilling Program (ODP). ODP is sponsored by the U.S. National Science Foundation (NSF) and participating countries under management of Joint Oceanographic Institutions (JOI), Inc. Funding for this research was provided by Consiglio Nazionale delle Ricerche and PNRA.