magmatic rock

The alkali content in the composition of magmatic rock was more, iron content was less.

岩浆岩成分中碱质含量较高, 铁质含量较低.

Because of a mass of magmatic rock intrusion, rock crevice water existing, broken roof and broken floor, the environment which is useful to gas loss generates.

而大量的岩浆岩的侵入，岩溶裂隙水的存在以及破碎的顶底板，均形成了有利于瓦斯释放的环境。

May divide into the extrusion structure, sway from side to side the structure, the extension structure, the magmatic rock to construct four kind and the composite construction type.

可分为挤压型构造、扭动型构造、伸展型构造、岩浆岩构造四类及复合构造类型。

The studied area migmatitic granite, which was regarded as magmatic rock by previous researchers.

后仙峪硼矿区地表分布的岩石主要为混合花岗岩.

Therefore, the article creates 11 optimum qualitative indices determining presence of ore magmatic rock bodies.

据此, 笔者以成矿元素丰度为依据,首创了岩体成矿指数等11种成矿性判别的最佳定性指标.

Based the data of geological exploration and the relation between magmatic rock and tectonization, we know the law of the magmatic rock intrusion and analyze the metamorphism and the influence that the magmatic rock makes to the coal seam.

根据岩浆与构造的关系并结合矿井地勘资料，弄清了岩浆的侵入规律，并分析了岩浆对煤层的变质作用和对煤体及其瓦斯的影响。