由于这种作用的影响，使钾质煌斑岩的源区地幔处于地温梯度高、氧逸度高的不稳定状态。
Under the influence of the subduction, the source mantle of the potassic lamprophyres has a high geothermal gradient and oxygen fugacity.
钻石是稀有火成岩（称为煌斑岩和金伯利岩）中偶尔出现的一种成分，其年代测定方法从未令人满意。
Diamonds, an occasional component of rare igneous rocks called lamproites and kimberlites, have never been dated satisfactorily.
而煌斑岩原始岩浆可能并不存在，煌斑岩是普遍类型的基性岩浆在源区或侵位过程中遭受地壳混染的衍生物；
Perhaps there are no lamprophyre magmas, and lamprophyres derive from common basic magmas which are contaminated by the crust in their source or the process of emplacement.
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