Dahongyu Formation

例句：

1. 1.The Dahongyu Formation is a significant geological formation in China's northwest region.
   大红峪组是中国西北地区的一个重要地质构造。
2. 2.The Dahongyu Formation contains numerous fossils, making it an important site for paleontologists.
   大红峪组含有大量化石，是古生物学家的重要研究场所。
3. 3.The Dahongyu Formation has been extensively studied due to its unique characteristics and historical significance.
   由于其独特的特性和历史意义，大红峪组受到了广泛的研究。