Ochoan

The Ochoan is a stage in the Permian stratigraphy (and an age in the geologic timescale) of North America.[1] The Ochoan age is roughly simultaneous with the Changhsingian age in the timescale of the ICS.[2] This post-Guadalupian stage is known for high levels of evaporite deposits.

## References

1. ↑ "GeoWhen Database - Ochoan". https://timescalefoundation.org/resources/geowhen/stages/Ochoan.html.
2. ↑ Shen, Shu-Zhong. "The international Permian timescale: March 2013 update". https://permian.stratigraphy.org/files/20130721210111619.pdf.

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