峨眉山大火成岩省形成后的海平面变化及沉积响应

THE SEA LEVEL VARIATION AND SEDIMENTATION RESPONSE AFTER THE FORMATION OF EMEISHAN LARGE IGNEOUS ROCK PROVINCE

峨眉山大火成岩省(ELIP)位于扬子板块西缘,是我国被国际学术界认可的大火成岩省,受到国内外学者的广泛关注。对峨眉山玄武岩喷发后的地表沉积响应研究表明,峨眉山大火成岩省断裂带对研究区沉积特征具有显著的控制作用。同时,晚二叠世早期的海平面变化显示为海侵,表明峨眉山玄武岩喷发后有热回沉作用的发生,这一结论为峨眉山大火成岩省的研究提供了重要信息。

Emeishan Large Igneous Province （ELIP） is in the W margin of Yangzi P la te , which has been approved in the international academia and paid wide attention to in China and abroad. The study on the surface sedimentation response after the eruption of Emeishan basalt shows that the fault zone of ELIP has controlled the sedimentation feature clear in the study area. Moreover, the sea level variation in early time of Late P shows the ingression, which means there is the thermal re-subsidence after the eruption of Emeishan basalt. This conclusion provides the important information for the study on ELIP.