There is growing evidence that the budget of Pb in mantle peridotites is largely contained in sulfide, and that Pb partitions strongly into sulfide relative to silicate melt. In addition, there is evidence to suggest that diffusion rates of Pb in sulfide (solid or melt) are very fast. Given the possibility that sulfide melt ‘wets’ sub-solidus mantle silicates, and has very low viscosity, the im...

In the study presented here, we investigated K-Ar age determination and petrological significance of trace element compositions Bitlis (Eastern Anatolia) ignimbrites associated with explosive activities well-known Nemrut volcano. geochronological dating ignimbrite flow deposits gave 790 ka which corresponds to first products pre-caldera stages stratovolcano. trachydacitic shoshonitic affinity a...