原始地壳（primitive crust）是最早形成的地壳，尚未找到直接证据。
有可能是原始星云大爆炸形成各种行星的时候，刚好由一块比较特殊的含铁量丰富的星云形成的，也有可能它的地壳表面原来也是石头，后来被太阳烤焦后变成的。
It may have formed from an unusually iron-rich part of the primordial cloud that gave birth to all the planets, or it may have had a normal rocky shell that got blasted or fried off.
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.
在原始社会，人和动物对地壳运动的嗅觉灵敏度是一样的。
The people and animal in barbarism, their have the same ability for smell the movement of the earth.
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