The recent (<190 ka) volcanic history of Pantelleria is characterized by the eruption nine peralkaline ignimbrites, ranging in composition from comenditic trachyte to comendite pantellerite. ~46 ka Green Tuff (GT) was last these which followed many effusive and explosive low-volume eruptions pantellerite vents within caldera moat along rim. Although studies have shed additional light on age,...

Abstract Reported here are geological, geophysical, mineralogical, and geochemical data on a previously unknown trachyte-hosted rare earth element (REE)-Nb-Zr occurrence at Pennington Mountain in northern Maine, USA. This was newly discovered by regional multiparameter, airborne radiometric survey that revealed anomalously high equivalent Th (eTh) U (eU), confirmed detailed ground portable X-Ra...

A fragment of continental crust has been postulated to underlie the young plume-related lavas of the Indian Ocean island of Mauritius based on the recovery of Proterozoic zircons from basaltic beach sands. Here we document the first U-Pb zircon ages recovered directly from 5.7 Ma Mauritian trachytic rocks. We identified concordant Archaean xenocrystic zircons ranging in age between 2.5 and 3.0 ...