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Acid Earth

David Rickard

in Pyrite: A Natural History of Fool's Gold

Published in print:
2015
Published Online:
November 2020
ISBN:
9780190203672
eISBN:
9780197559482
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/oso/9780190203672.003.0011
Subject:
Chemistry, Mineralogy and Gems

The atmosphere and much of the rivers, lakes, and oceans of the Earth are oxygenated. Any pyrite that comes into contact with these environments becomes unstable and breaks down. The process is ... More


What Controls Atmospheric Oxygen Concentrations?

Donald Eugene Canfield

in Oxygen: A Four Billion Year History

Published in print:
2014
Published Online:
October 2017
ISBN:
9780691145020
eISBN:
9781400849888
Item type:
chapter
Publisher:
Princeton University Press
DOI:
10.23943/princeton/9780691145020.003.0005
Subject:
Environmental Science, Climate

This chapter deals with the fundamental question of why there is oxygen in the atmosphere at all. It seeks to identify the main processes controlling the oxygen concentration. Plants and ... More


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