metamorphic subfacies

例句：

1. 1.The study of metamorphic rocks is crucial for understanding the Earth's history.
   研究变质岩对于理解地球历史至关重要。
2. 2.Metamorphic subfacies play a significant role in shaping the geological landscape.
   变质亚相在塑造地质景观中起着重要作用。
3. 3. In this region, the metamorphic subfacies has undergone significant changes due to tectonic activity.
   在这个地区，由于构造活动，变质亚相经历了显著的变化。