In their place we found intriguing alternations of turquoise-blue, gray and green clays, brown sandstone and fossilized plant matter called lignite.

• 我们发现取而代之的岩层组成十分有趣，其中包括了蓝绿色、灰色、绿色的黏土、棕色的沙岩，以及称做褐煤的植物化石。