Microbial dissimilatory sulfate reduction to sulfide is a predominant terminal pathway of
organic matter mineralization in the anoxic seabed. Chemical or microbial oxidation of the …

A great number of the bacteria and archaea on Earth are found in subsurface environments
in a physiological state that is poorly represented or explained by laboratory cultures …

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 …

Industrial activities and the natural oxidation of metallic sulfide-ores produce sulfate-rich
waters with low pH and high heavy metals content, generally termed acid mine drainage …

The composition of sulfur isotopes in sedimentary sulfides and sulfates traces the sulfur
cycle throughout Earth's history. In particular, depletions of sulfur-34 (34S) in sulfide relative …

Oxygenation of the Earth's surface is increasingly thought to have occurred in two steps. The
first step, which occurred∼ 2,300 million years (Myr) ago, involved a significant increase in …

▪ Abstract This paper reviews the Precambrian history of atmospheric oxygen, beginning
with a brief discussion of the possible nature and magnitude of life before the evolution of …

Microplastics are readily accumulated in coastal sediments, where active sulfur (S) cycling
takes place. However, the effects of microplastics on S cycling in coastal sediments and their …

Sulfur, with an atomic weight of 32.06, has four stable isotopes. By far the most abundant is
32 S, representing around 95% of the total sulfur on Earth. The next most abundant isotope …

Phanerozoic levels of atmospheric oxygen relate to the burial histories of organic carbon
and pyrite sulfur. The sulfur cycle remains poorly constrained, however, leading to …