- 油页岩 yóuyèyán oil shalea dark sedimentary rock containing oil that can be extracted through distillation
- 油母页岩 yóumǔyèyán oil shaleA type of shale containing combustible organic material; it is light to dark brown and can be split into thin layers to extract shale oil.
- 页岩油 yèyányóu shale oilshale oil; fuel oil extracted from oil shale
- 角页岩 jiǎoyèyán hornfelsA dark, fine-grained metamorphic rock formed by the contact of shale or siltstone with heat; commonly found near igneous intrusions and composed of minerals such as quartz, feldspar, and graphite.
- 泥质页岩 nízhìyèyán argillaceous shalea type of shale with a high clay content, characterized by its ability to split into thin layers (fissility)
- 页岩气 yèyánqì shale gasNatural gas found trapped within shale formations.
