Dissimilatory sulphate reduction is the unifying and defining trait of sulphate-reducing
prokaryotes (SRP). In their predominant habitats, sulphate-rich marine sediments, SRP have …

Microbial life permeates Earth's critical zone and has likely inhabited nearly all our planet's
surface and near subsurface since before the beginning of the sedimentary rock record …

Establishing a unified timescale for the early evolution of Earth and life is challenging and
mired in controversy because of the paucity of fossil evidence, the difficulty of interpreting it …

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 …

Microbially induced sedimentary structures (MISS) result from the response of microbial
mats to physical sediment dynamics. MISS are cosmopolitan and found in many modern …

Sulphur isotope data from early Archaean rocks suggest that microbes with metabolisms
based on sulphur existed almost 3.5 billion years ago, leading to suggestions that the …

Long-term secular variation in seawater sulfate concentrations ([SO 4 2−] SW) is of interest
owing to its relationship to the oxygenation history of Earth's surface environment. In this …

Behind the versatile nature of prokaryotic energy metabolism is a set of redox proteins
having a highly modular character. It has become increasingly recognized that a limited …

The 3.45-billion-year-old Strelley Pool Formation of Western Australia preserves
stromatolites that are considered among the oldest evidence for life on Earth. In places of …

A sulfide-oxidizing microorganism, Desulfurivibrio alkaliphilus (DA), generates a consistent
enrichment of sulfur-34 (34 S) in the produced sulfate of+ 12.5 per mil or greater. This …