Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 1 of 1 for “"Hg anomaly"”.
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Geochemical investigations of the late early Cambrian extinctions
Following the radiation of animals in the early Cambrian, the reef-building archaeocyathids went extinct around 513 – 508 Ma and redlichiid and olenellid trilobites went extinct around 506 Ma. Both extinction events have been documented to occur with negative carbon isotope excursions (CIEs) that …