岩浆岩的化学成分特别是微量元素的含量及分布特征反映了其物质来源和大地构造背景。

The chemical compositions of magmatite reflect the material source and the tectonic background, especially the content and distribution of microelements .

区域地质、矿床（田）构造、地层岩性、岩浆岩和围岩蚀变等对金矿成矿均有不同程度的控制作用。

Regional Geology, orefield structures, lithostratigraphy, magmatite and wall -rock alteration have control functions for gold mineralization in different degrees.

火山爆发的时候,岩浆岩把整个城市都淹没了.

The magma submerged the whole city when the volcano erupted.

岩浆岩成分中碱质含量较高, 铁质含量较低.

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

邯邢煤田煤系及其上覆地层中常有岩浆岩侵入体穿插.

There used to be igneous intrusions into coal measures and overlying strata in the Hanxing coalfield.

乌旗地区岩浆岩分布广泛，以华力西晚期与燕山早期最为发育。

Intrusions, especially Late Hercynian and Early Yanshanian intrusions, are widespread in Dongwuqi area, Inner Mongolia.

在美国中西部，例如，有几个沉积石块，但变质和岩浆岩较不常见。

In the American Midwest, for instance, there are several sedimentary stones, but metamorphic and igneous rocks are less common.