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- Title
Biogeochemistry: Toxic Cambrian oceans.
- Authors
Shields-Zhou, Graham
- Abstract
The article focuses on anoxia, which was suspected as the reason of the extinction of marine ecosystems such as trilobites during the Cambrian period. It relates the study of Gill and colleagues, wherein a geochemical analyses and models of geochemical tracers including carbon, sulphur isotopes, and molybdenum content were presented from Cambrian-age stratigraphic areas across the world. It adds that the organic decay is being restricted by anoxia and allows the occurrence of soluble iron.
- Subjects
HYPOXEMIA; BIOLOGICAL extinction; CAMBRIAN stratigraphic geology; MARINE animals; CARBON; SULFUR; MOLYBDENUM; ANALYTICAL geochemistry
- Publication
Nature, 2011, Vol 469, Issue 7328, p42
- ISSN
0028-0836
- Publication type
Article
- DOI
10.1038/469042a