Eoarchean

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Eoarchean

DbpediaThing

Wikipedia articleDbpedia source

In the geologic record the Eoarchean (/ˌiːoʊ.ɑrˈkiːən/; also spelled Eoarchaean) Era or erathem is the earliest time following the solidification of Earth's crust. It follows the Hadean and precedes the Paleoarchean Era of the geologic timescale. The approximate abiotic origins of life (abiogenesis) have been dated to a time window from 4,000 to 3,600 million years ago when atmospheric pressure values ranged from ca. 100 to 10 bar.

English Wikipedia http://en.wikipedia.org/wiki/Eoarchean

Spanish wikipedia http://es.wikipedia.org/wiki/Era_Eoarcaica

Wiki page external link http://taxonconcept.stratigraphy.net/zone_info.php?zone_id=109&zone_type_id=1&zone_theme_id=100 http://www.springer.com/life+sciences/evolutionary+%26+developmental+biology/book/978-3-642-21624-4