intrastratal

例句：

1. 1. The geologist is studying the intrastratal distribution of minerals in the area.
   地质学家正在研究该地区矿物的地层分布。
2. 2. The fossils found in the intrastratal layers provide evidence of ancient life.
   在地层内发现的化石为古代生命提供了证据。
3. 3.The study of intrastratal structures is crucial for understanding the history of plate tectonics.
   研究地层结构对于理解板块构造的历史至关重要。