Ontology highlight
ABSTRACT:
SUBMITTER: Ossa Ossa F
PROVIDER: S-EPMC6452703 | biostudies-literature | 2019 Apr
REPOSITORIES: biostudies-literature
Ossa Ossa Frantz F Hofmann Axel A Spangenberg Jorge E JE Poulton Simon W SW Stüeken Eva E EE Schoenberg Ronny R Eickmann Benjamin B Wille Martin M Butler Mike M Bekker Andrey A
Proceedings of the National Academy of Sciences of the United States of America 20190320 14
The Archean Eon was a time of predominantly anoxic Earth surface conditions, where anaerobic processes controlled bioessential element cycles. In contrast to "oxygen oases" well documented for the Neoarchean [2.8 to 2.5 billion years ago (Ga)], the magnitude, spatial extent, and underlying causes of possible Mesoarchean (3.2 to 2.8 Ga) surface-ocean oxygenation remain controversial. Here, we report δ<sup>15</sup>N and δ<sup>13</sup>C values coupled with local seawater redox data for Mesoarchean ...[more]