外生矿床在地面上,岩石受到大气、水、生物的影响,逐渐崩坏并迁移,其中有些成分经过物理的或化学的变化,集中在一定的地方,就形成了矿床。如岩石中所含的氧化铁,在适宜的气候条件下能够被水带走,在盆地中沉淀下来,成为铁矿。这种在地面进行的成矿作用,主要是通过大气、水及生物的活动而引起的,而大气、水及生物的活动主要 Exogenous deposits on the ground, the rocks are affected by the atmosphere, water, and biology, and gradually collapsed and migrated. Some of these components undergo physical or chemical changes and concentrate in a certain place, forming a deposit. For example, the iron oxide contained in the rock can be carried away by water under suitable climatic conditions and precipitated in the basin to become iron ore. This mineralization on the ground is mainly caused by the activities of the atmosphere, water, and biology, and the main activities of the atmosphere, water, and biology are