heliolithic

例句：

1. 1. The geologist is studying the heliolithic layers of the mountain.
   地质学家正在研究这座山的地壳层。
2. 2.The stratigraphic record of the ancient civilization is preserved in the heliolithic layers of the cave.
   古代文明的地层记录保存在洞穴的地壳层中。
3. 3.The team used heliolithic samples to study the formation of the rock.
   该团队使用地壳样本来研究岩石的形成。