九寨沟凡囤水或水流经过的地方，底下都不是泥沙或一般石头，而是喀斯特碳酸盐岩石，它们在风吹水冲氧化等多重因素作用下历经万年溶解生出大量钙化物质，这些钙化物红里套着绿，绿里套着蓝，蓝里套着紫，紫里套着黄，宛若色彩斑斓的地质公园。
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