Experimental evidence suggested that microbial activity, low oxygen, and specific seawater ... an analytical model to examine post-glacial seawater lithium isotope ratios. It showed that the ...

Scientists are working to shed new light on an enduring climate mystery—one that, if solved, could help them make more ...

marine oxygen minimum zones, extreme environments), and paleo-ecosystems across major climatic/biotic transitions in Earth history (e.g., mass extinction events, greenhouse climates, ...

Evidence from hafnium and oxygen isotopes hidden in crystals shows the ... erasing the record of a billion years in one glacial sweep. 'Earth's hidden ocean': Tethys Seaway was the force behind ...

The rise of oxygen in the early Earth’s atmosphere remains enigmatic in its timing and extent. Insights from thallium isotopes in Archean ... sea ice cover and glacial ice loss in the last ...

These unique networks provide Member States access to global and regional data sets on water isotopes (oxygen-18, deuterium and tritium) and related mapping products. These widely used data sets are ...

The rise of oxygen in the early Earth’s atmosphere remains enigmatic in its timing and extent. Insights from thallium isotopes in Archean shales suggest that it may have experienced flips in ...