The carbon content of Earth and its core

• DOI: 10.1073/pnas.1919930117
• Publication Date: 2020-03-31T00:35:38Z
• Authors: Rebecca A. Fischer; Elizabeth Cottrell; Erik Hauri; Kanani K. M. Lee; Marion Le Voyer
• Keywords: Carbon fibers

Significance Carbon is critical to life on Earth, climate regulation, and many geological processes. Despite its importance, the amount of carbon in planet has been poorly understood due uncertainty composition Earth’s core, likely largest reservoir carbon. Here, we demonstrate that becomes increasingly compatible silicate compared metal at high pressures temperatures which core formed. Therefore, can only be present low abundances, although still holds vast majority planet’s