Petrogenesis and tectonic setting of Dashibao Group basalts from Songpan-Ganze block,northwestern Sichuan province, China
川西北松潘-甘孜地块大石包组玄武岩成因及其形成构造背景

The early late Permian Dashibao basahs, which distributed at the Songpan-Ganze block, NW Sichuan Province, display significant enrichment of large ion lithophile elements and high field strength elements, and similar to oceanic island basalts and the Emeishan flood basahs. These geochemical characteristics are comparable with the high-Ti Emeishan basalts from Binchuan, suggesting that they were formed within continental plate and were resulted from the Emeishan mantle plume. This implies that the Emeishan flood basalts distributes beyond the Yangtze block, has extended to the Songpan-Ganze block and the Emeishan plume head is bigger than that estimated before.