Oxygenation, life, and the planetary system during Earth's middle history: An overview
The long history of life on Earth has unfolded as a cause-and-effect relationship with the
evolving amount of oxygen (O2) in the oceans and atmosphere. Oxygen deficiency …
evolving amount of oxygen (O2) in the oceans and atmosphere. Oxygen deficiency …
The evolution of Earth's biogeochemical nitrogen cycle
Nitrogen is an essential nutrient for all life on Earth and it acts as a major control on
biological productivity in the modern ocean. Accurate reconstructions of the evolution of life …
biological productivity in the modern ocean. Accurate reconstructions of the evolution of life …
Snowball Earth climate dynamics and Cryogenian geology-geobiology
Geological evidence indicates that grounded ice sheets reached sea level at all latitudes
during two long-lived Cryogenian (58 and≥ 5 My) glaciations. Combined uranium-lead and …
during two long-lived Cryogenian (58 and≥ 5 My) glaciations. Combined uranium-lead and …
Statistical analysis of iron geochemical data suggests limited late Proterozoic oxygenation
Sedimentary rocks deposited across the Proterozoic–Phanerozoic transition record extreme
climate fluctuations, a potential rise in atmospheric oxygen or re-organization of the seafloor …
climate fluctuations, a potential rise in atmospheric oxygen or re-organization of the seafloor …
The iron paleoredox proxies: A guide to the pitfalls, problems and proper practice
Oceanic anoxia—including euxinic settings defined by the presence of water column
hydrogen sulfide (H2S)—is minor in the ocean today. Such conditions, however, were …
hydrogen sulfide (H2S)—is minor in the ocean today. Such conditions, however, were …
Low Mid-Proterozoic atmospheric oxygen levels and the delayed rise of animals
NJ Planavsky, CT Reinhard, X Wang, D Thomson… - science, 2014 - science.org
The oxygenation of Earth's surface fundamentally altered global biogeochemical cycles and
ultimately paved the way for the rise of metazoans at the end of the Proterozoic. However …
ultimately paved the way for the rise of metazoans at the end of the Proterozoic. However …
Continental flood basalt weathering as a trigger for Neoproterozoic Snowball Earth
GM Cox, GP Halverson, RK Stevenson… - Earth and Planetary …, 2016 - Elsevier
Atmospheric CO 2 levels and global climate are regulated on geological timescales by the
silicate weathering feedback. However, this thermostat has failed multiple times in Earth's …
silicate weathering feedback. However, this thermostat has failed multiple times in Earth's …
Co-evolution of eukaryotes and ocean oxygenation in the Neoproterozoic era
Abstract The Neoproterozoic era (about 1,000 to 542 million years ago) was a time of
turbulent environmental change. Large fluctuations in the carbon cycle were associated with …
turbulent environmental change. Large fluctuations in the carbon cycle were associated with …
A shale-hosted Cr isotope record of low atmospheric oxygen during the Proterozoic
The emergence and expansion of animal life on Earth represents a dramatic shift in the
structure and complexity of the biosphere. A lack of firm constraints on surface oxygen levels …
structure and complexity of the biosphere. A lack of firm constraints on surface oxygen levels …
Earth's oxygen cycle and the evolution of animal life
CT Reinhard, NJ Planavsky, SL Olson… - Proceedings of the …, 2016 - National Acad Sciences
The emergence and expansion of complex eukaryotic life on Earth is linked at a basic level
to the secular evolution of surface oxygen levels. However, the role that planetary redox …
to the secular evolution of surface oxygen levels. However, the role that planetary redox …