The biological pump is a process whereby CO2 in the upper ocean is fixed by primary producers and transported to the deep ocean as sinking biogenic particles or as dissolved …
The rise of complex macroscopic life occurred during the Ediacaran Period, an interval that witnessed large-scale disturbances to biogeochemical systems. The current Ediacaran …
AD Rooney, MD Cantine… - Proceedings of the …, 2020 - National Acad Sciences
The rise of animals occurred during an interval of Earth history that witnessed dynamic marine redox conditions, potentially rapid plate motions, and uniquely large perturbations to …
The ocean‐atmosphere system is typically envisioned to have gone through a unidirectional oxygenation with significant oxygen increases in the earliest (ca. 635 Ma), middle (ca. 580 …
The early diversification of animals (∼ 630 Ma), and their development into both motile and macroscopic forms (∼ 575–565 Ma), has been linked to stepwise increases in the …
The oxygen content of the Earth's surface environment is thought to have increased in two broad steps: the Great Oxygenation Event (GOE) around the Archean–Proterozoic boundary …
Metazoans are likely to have their roots in the Cryogenian period,,, but there is a marked increase in the appearance of novel animal and algae fossils shortly after the termination of …
MR Saltzman, E Thomas, FM Gradstein - The geologic time scale, 2012 - academia.edu
Variations in the 13C/12C value of total dissolved inorganic carbon (DIC) in the world's oceans through time have been documented through stratigraphic study of marine …
FM Gradstein, JG Ogg, MD Schmitz, GM Ogg - Boston, USA, 2012 - books.google.com
Construction and assembly of the Geologic Time Scale involves:(a) constructing a relative (chronostratigraphic) standard scale for key periods in the Earth's rock record;(b) identifying …