| 词条 | Stenian |
| 释义 |
| image = |caption = Map of Stenian }} The Stenian Period (from Greek στενός (stenós), meaning "narrow") is the final geologic period in the Mesoproterozoic Era and lasted from {{Period start|Stenian}} Mya to {{Period start|Tonian}} Mya (million years ago). Instead of being based on stratigraphy, these dates are defined chronometrically. The name derives from narrow polymetamorphic belts formed over this period. Preceded by the Ectasian period and followed by the Neoproterozoic Era. The supercontinent Rodinia assembled during the Stenian. It would last into the Tonian period. This period includes the formation of the Keweenawan Rift at about 1100 Mya.[1] See also
Notes1. ^{{cite web|url=http://deepblue.lib.umich.edu/bitstream/2027.42/28843/1/0000678.pdf|title=Organic geochemical study of mineralization in the Keweenawan Nonesuch Formation at White Pine, Michigan|publisher=University of Michigan|accessdate=28 September 2011}} References
3 : Mesoproterozoic|Geological periods|Proterozoic geochronology |
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