Autotrophic processes, Microbiology, Metal compounds, Fresh water, Sediment core samples, Chalcogens, Biology, Biochemistry, Sedimentary petrology, Limnology, Petrology, Iron compounds, Light, Particle physics, Absolute dating methods, Bacteria, Oxidation, Reaction mechanisms, Geochronology, Oxygen, Electromagnetism, Geology, Electromagnetic radiation, Earth...