parent rock

• 母基岩

parent rock的用法和样例：

例句

1. All that is needed on rock is a little concrete or mortar to make the surface level.
   在基岩上所需要做的全部工作是用少量混凝土或砂浆把表面找平。
2. The Maoping landslide is a large and old landslide of the bed rock in the Geheyan reservoir area of the Qingjiang River.
   茅坪滑坡是清江隔河岩库区一个大型的基岩古滑坡体。
3. The mother rock derived form Archaean and Early Proterozoic metamorphic rock from the north-east part of Ordos Basin.
   该区延长组母岩主要来自盆地东北缘的太古代及早元古代变质岩。
4. Once formed, zircon crystals are so durable that they can persist even if their parent rock is exposed at the surface and destroyed by weathering and erosion.
   但是，这些锆石所蕴含的讯息似乎隐晦不清，部份原因是地质学家无法确定它们的母岩。