Paleoproterozoic love

Paleoproterozoic

Definitions

from The American Heritage® Dictionary of the English Language, 5th Edition.

  • adjective Of, relating to, or being the oldest of the three eras of the Proterozoic Eon, from approximately 2.5 billion to 1.6 billion years ago, marked by the formation of stable continents and the appearance of cyanobacteria.
  • noun The Paleoproterozoic Era.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • adjective geology Of a geologic era within the Proterozoic eon; comprises the Siderian, Rhyacian, Orosirian and Statherian periods from about 2500 to 1600 million years ago, when cyanobacteria increased the amount of oxygen in the atmosphere and changed life on Earth for ever.
  • proper noun geology The Paleoproterozoic era.

Etymologies

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Examples

  • The lower Lesser Himalayan sequence: A Paleoproterozoic arc on the northern margin of the Indian plate

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  • The lower Lesser Himalayan sequence: A Paleoproterozoic arc on the northern margin of the Indian plate

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  • Increases in the overall maximum occurred in discrete steps approximately corresponding to increases in atmospheric oxygen levels in the mid-Paleoproterozoic and Ediacaran-Cambrian - early Ordovician.

    Pharyngula

  • Increases in the overall maximum occurred in discrete steps approximately corresponding to increases in atmospheric oxygen levels in the mid-Paleoproterozoic and Ediacaran-Cambrian - early Ordovician.

    Planet Atheism

  • The Sudbury impact layer in the Paleoproterozoic iron ranges of northern Michigan,

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