摘要：

贵州峨眉山玄武岩喷发，从动态的角度可以分为茅口期晚期和龙潭期（吴家坪期），龙潭期又可分为三个喷发旋回，对应于四个不同的岩相古地理环境，体现了东吴运动在造成贵州地区地壳抬升、下沉和接受最大海侵之后，又上升、拉张、沉陷带发生地裂（又称峨眉地裂）以及地幔物质喷溢等地质活动，具间歇性和多旋回性的特点。本文从研究海陆变迁入手，揭示峨眉山玄武岩喷发与沉积作用的内在联系，进而探讨其与金、锑等矿产的成因联系，提出该期各相区与成矿区的形成模式。通过对贵州峨眉山玄武岩不同喷发期岩相古地理的研究可以看到，茅口期晚期和龙潭期早期海域的沉积韵律和相带展布格局与玄武岩喷发的间歇性和多旋回性特征完全一致。玄武岩的喷发为成矿提供了物质基础，玄武岩喷发的间歇期又为沉积矿产的富集提供机遇。这种岩浆期后气液以富硅和二氧化碳为特征的玄武岩，本身富含铁、锰、铜、铅、锌、锑、砷、汞、金、银、氟、磷以及一些稀散和放射性元素等成矿组分。在喷发过程中，气液成分有一定变化，各阶段和离岩浆的远近距离不同以及喷发性质和环境差异，形成了火山气液矿床、火山沉积矿床和沉积矿床的不同成矿带。

Abstract:

 Explosion phases of the Emeishan basalt in Guizhou, from intensity and time of explosion, are divided into late Maokou phase and Longtan phase (or Wujiaping phase). The Longtan phase is subdivided into 3 explosion cycles, corresponding to 4 different environments of lithofacies palaeogeography. It is showing that Dongwu Movement caused elevating and subsiding of the earth crust, with regression and transgression, following elevating, spreading and cracking (or called as Emeishan cracking), and mantle material exploiting discontinuous and cycle. The interrelationship between process of the Emeishan basalt explosion and sedimention process is revealed through study on the base of evolution of palaeogeography in Permian, and relationship between Au and Sb deposits and the Emeishan basalt explosion and the evolution of palaeogeography is discussed in this study, authors set up the models of relationship between lithofacies and minerogenetic province. It can be seen that the sediment cycles and the distribution of lithofacies in Maokou Stage and Early Longtan Stage is consistent with the Emeishan basalt explosion episodes and cycles. The Emeishan basalt explosion supplies a lot of material to form mineral resource, and intervals of the Emeishan basalt explosion are favorable to deposit abundant and different deposits. The basalt is rich in Si and CO2 during the gas-hydrate interval of magma effusion process, and rich in Fe, Mn, Cu, Pb, Zn, Sb, Hg, As, Au, Ag, F, P and rare and radioactive elements. The distribution of mineral regions (such as volcano-gas-hydrate mineral region, volcano-sediment mineral region and sediment mineral region) is controlled by distance from crater and magma, and volcano composition and mineral environment.