The Stenian (from Greek stenos, "narrow") is the final geologic period in the Mesoproterozoic Era and lasted from 1200 Mya to 1000 Mya (million years ago). Instead of being based on stratigraphy, these dates are defined chronometrically.
Name derives from narrow polymetamorphic belts formed over this period.
The supercontinent Rodinia assembled during the Stenian.
References
- "Stenian Period". GeoWhen Database. Archived from the original on May 12, 2006. http://web.archive.org/web/20060512164255/http://www.stratigraphy.org/geowhen/stages/Stenian.html. Retrieved January 5, 2006.
- James G. Ogg (2004). "Status on Divisions of the International Geologic Time Scale." (– Scholar search). Lethaia 37: 183–199. doi:10.1080/00241160410006492. http://onlinelibrary.wiley.com/doi/10.1080/00241160410006492/abstract.
Preceded by Archean Eon | 2.5 Ga - Proterozoic Eon - 542 Ma | Followed by Phanerozoic Eon | |||||||||
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2.6 Ga - Paleoproterozoic Era - 1.6 Ga | 1.6 Ga - Mesoproterozoic Era - 1.0 Ga | 1.0 Ga - Neoproterozoic Era - 542 Ma | |||||||||
Siderian | Rhyacian | Orosirian | Statherian | Calymmian | Ectasian | Stenian | Tonian | Cryogenian | Ediacaran |