ultrametamorphism

例句：

1. 1. The ultrametamorphic rocks are found in the mountainous regions of the northern hemisphere.
   超变质岩在北半球的山区被发现。
2. 2.The study of ultrametamorphism is crucial for understanding the evolution of Earth's crust.
   研究超变质作用对于理解地球地壳的演变至关重要。
3. 3. The ultrametamorphic rocks are known for their unique mineral composition and geological features.
   超变质岩以其独特的矿物组成和地质特征而闻名。