John E. Zumberge
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View article: Production Allocation: Rosetta Stone or Red Herring? Best Practices for Understanding Produced Oils in Resource Plays
Production Allocation: Rosetta Stone or Red Herring? Best Practices for Understanding Produced Oils in Resource Plays Open
The production of crude oil from resource plays has increased enormously over the past decade. In the USA, around 63% of total output in 2019 was from unconventional production. The major unconventional plays in the USA (e.g., Permian Basi…
View article: Niche expansion for phototrophic sulfur bacteria at the Proterozoic–Phanerozoic transition
Niche expansion for phototrophic sulfur bacteria at the Proterozoic–Phanerozoic transition Open
Significance Carotenoid pigments afford valuable clues about the chemistry and biology of both modern and ancient aquatic environments. This study reveals that fossil aromatic carotenoids—long considered biomarkers for anoxygenic, phototro…