Tag: early earth

Ironstones deposited on the seafloor nearly two billion years ago now occur as rocky outcrops along the lakeshore of Tu Nedhé (Northwest Territories, Canada). Credit: Devon Cole / Des roches ferrugineuses qui se sont déposées sur le plancher océanique il y a près de deux milliards d’années prennent maintenant la forme d’un affleurement rocheux sur les rives du lac Tu Nedhé (Territoires du Nord-Ouest, Canada). Photo : Devon Cole

Rise Of Oxygen On Early Earth Sheds Light On Life On Other Planets

MessageToEagle.com | February 1, 2022

Eddie Gonzales Jr. – MessageToEagle.com – When did the Earth reach oxygen levels sufficient to support animal life? Researchers from McGill University have discovered that a rise in

Earth 2.7 billion years ago - home only to single-celled microbes - had atmosphere that contained no oxygen, sunlight was about one-fifth weaker.

Earth Changes

Ancient Bubbles Reveal: Earth’s Early Atmosphere Was Thin

MessageToEagle.com | May 11, 2016

MessageToEagle.com – Researchers from the University of Washington have used bubbles trapped in 2.7 billion-year-old rocks to show that air at that time exerted at most half the pressure