2025/03/27 by Saleheh Ebadirad, Timothy W. Lyons, Ebadirad, Saleheh +3 · 1 citation
Earth and Planetary Sciences · Environmental Science · Physics and Astronomy · #Atmospheric and Oceanic Physics (physics.ao-ph) #FOS: Biological sciences #FOS: Physical sciences #Methane Hydrates and Related Phenomena #Origins and Evolution of Life #Paleontology and Stratigraphy of Fossils #Populations and Evolution (q-bio.PE)
paper · pdf · doi:10.48550/arxiv.2503.21919
openalex publication_date 2025/03/27 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
This chapter explores the key carbon compounds that shaped the Archean biogeochemical cycle, delineating their substantial impact on Earth's primordial atmospheric and biospheric evolution. At the heart of the Archean carbon cycle were carbon dioxide and methane, which served as key regulators of Earth's early climate. Particular emphasis is placed on methane cycling, encompassing both abiotic methane production and consumption, as well as their biotic counterparts-methanogenesis and methanotrophy. These ancient microbial pathways not only shaped methane fluxes but were also tightly interwoven with Earth's evolving redox state. We provide a comprehensive exploration of the intertwined evolution of Earth's geochemical environment and microbial life. The interdisciplinary approach of this chapter not only sheds light on the complex dynamics of Earth's early methane cycling but also offers critical insights that could inform the search for life beyond our planet, thereby marking a contribution to Earth sciences, astrobiology, and related fields.