[meteorite-list] Cosmos Article: Lava & Meteorites Unveil Ancient Earth's Atmosphere
Keith Lemons
keithlemons at mac.com
Thu May 12 13:27:15 EDT 2016
Interesting May 12, 2016 article in Cosmos describing how micrometeorites are used for oxygen signatures in Earth’s atmosphere 2.7 billion years ago by examination of certain types of iron oxide minerals.
https://cosmosmagazine.com/earth-sciences/lava-and-meteorites-unveil-ancient-earths-atmosphere?utm_source=Today+in+Cosmos+Magazine&utm_campaign=2105cb79b2-RSS_EMAIL&utm_medium=email&utm_term=0_5f4ec2b124-2105cb79b2-179875093 <https://cosmosmagazine.com/earth-sciences/lava-and-meteorites-unveil-ancient-earths-atmosphere?utm_source=Today+in+Cosmos+Magazine&utm_campaign=2105cb79b2-RSS_EMAIL&utm_medium=email&utm_term=0_5f4ec2b124-2105cb79b2-179875093>
Article based on following:
Nature Geoscience | Letter published May 9, 2016
Earth's air pressure 2.7 billion years ago constrained to less than half of modern level
http://www.nature.com/ngeo/journal/vaop/ncurrent/full/ngeo2713.html <http://www.nature.com/ngeo/journal/vaop/ncurrent/full/ngeo2713.html>
Nature | Letter published May 11, 2016
Ancient micrometeorites suggestive of an oxygen-rich Archaean upper atmosphere
http://www.nature.com/nature/journal/v533/n7602/full/nature17678.html <http://www.nature.com/nature/journal/v533/n7602/full/nature17678.html>
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