推断深部地壳性质主要是根据四种资料来源:①直接观察金伯利岩、碱性玄武岩中的钻孔岩芯和捕虏体;②直接观察一度处于深部的岩体露头;③对相当于下地壳的矿物组合的实验室研究;④用地球物理方法对下地壳的间接观测。遗憾的是超过数公里达到结晶基底的探测钻孔很少,几乎没有提供较深的地壳构造信息。虽然目前正在蕴酿一个广泛的大陆深钻探 Inferring the nature of the deep crust is mainly based on four sources: ① direct observation of kimberlite, basaltic rocks and xenoliths; ② direct observation of the outcrop in a deep rock; ③ for the equivalent of the lower crust Laboratory research on mineral assemblages; ④ Indirect observation of the lower crust by geophysical methods. Unfortunately, there are few probing holes that reach the crystalline base beyond several kilometers, providing little information on the crustal structure. Although it is currently brewing a wide range of mainland deep drilling