The Statherian Period (; grc, σταθερός, statherós, meaning "stable, firm") is the final
geologic period in the
Paleoproterozoic Era and lasted from
Mya
Mya may refer to:
Brands and product names
* Mya (program), an intelligent personal assistant created by Motorola
* Mya (TV channel), an Italian Television channel
* Midwest Young Artists, a comprehensive youth music program
Codes
* Burmese ...
to Mya (million years ago). Instead of being based on
stratigraphy
Stratigraphy is a branch of geology concerned with the study of rock layers ( strata) and layering (stratification). It is primarily used in the study of sedimentary and layered volcanic rocks.
Stratigraphy has three related subfields: lithost ...
, these dates are defined
chronometrically.
The period was characterized on most
continent
A continent is any of several large landmasses. Generally identified by convention rather than any strict criteria, up to seven geographical regions are commonly regarded as continents. Ordered from largest in area to smallest, these seven ...
s by either new
platform
Platform may refer to:
Technology
* Computing platform, a framework on which applications may be run
* Platform game, a genre of video games
* Car platform, a set of components shared by several vehicle models
* Weapons platform, a system ...
s or final
cratonization of
fold belt
Fold, folding or foldable may refer to:
Arts, entertainment, and media
* ''Fold'' (album), the debut release by Australian rock band Epicure
* Fold (poker), in the game of poker, to discard one's hand and forfeit interest in the current pot
* Abo ...
s. Oxygen levels were 10% to 20% of current values.
''
Rafatazmia'', controversially claimed to be present in Statherian beds in
India
India, officially the Republic of India ( Hindi: ), is a country in South Asia. It is the seventh-largest country by area, the second-most populous country, and the most populous democracy in the world. Bounded by the Indian Ocean on the ...
, may be the oldest known confirmably
eukaryotic
Eukaryotes () are organisms whose cells have a nucleus. All animals, plants, fungi, and many unicellular organisms, are Eukaryotes. They belong to the group of organisms Eukaryota or Eukarya, which is one of the three domains of life. Bact ...
fossil organism.
By the beginning of the Statherian, the
supercontinent Columbia
Columbia may refer to:
* Columbia (personification), the historical female national personification of the United States, and a poetic name for America
Places North America Natural features
* Columbia Plateau, a geologic and geographic region in ...
had assembled.
At roughly 1.7 billion years
before present a series of
natural nuclear fission reactors was operational in what is now
Oklo, Gabon.
See also
*
References
Paleoproterozoic
Geological periods
Proterozoic geochronology
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