Internal concentric layering and nuclei are expected if the spheres are concretions
Claim about Torysh (Valley of Balls) · Stance: supporting
A key test for concretion origin is internal structure: nuclei, zoning, and concentric textures. Split or eroded spheres can expose these diagnostic features.
Site
- Torysh (Valley of Balls) Shetpe, Mangystau Region, Kazakhstan
Evidence for and against
- Peer-reviewed model: spherical carbonate concretions can grow rapidly early in diagenesis