Hierarchy classification:

1. top of the aat hierarchies
2. Materials Facet
3. Materials (hierarchy name)
4. materials (substances)
5. [materials by formation process]
6. deposit
7. speleothems

Anotations

Scope note:

Icicle-like formations of calcium carbonate, depending from the roof or sides of a cavern and produced by the dropping of waters which have percolated through, and partially dissolved, the overlying limestone.