The rock record contains a rich variety of sedimentary surface textures on siliciclastic
sandstone, siltstone and mudstone bedding planes. In recent years, an increasing number …

Microfossils, stromatolites, preserved lipids and biologically informative isotopic ratios
provide a substantial record of bacterial diversity and biogeochemical cycles in Proterozoic …

Phosphorus is the central ingredient in fertilizer that allows modern agriculture to feed the
world's population. This element, also critical in a host of industrial applications, is a …

The sulfur cycle is an important, although understudied facet of today's modern oxygen
minimum zones (OMZs). Sulfur cycling is most active in highly productive coastal OMZs …

Phosphatized and silicified microfossils–preserved through replication of organic templates
by authigenic calcium phosphate and silica, respectively–form through mechanistically …

In natural and laboratory-based environments experiencing sustained counter fluxes of
sulfide and oxidants, elemental sulfur (S0)—a key intermediate in the sulfur cycle—can …

It is generally recognized that the evolution of the early Earth was affected by an external
energy source: radiation from the early Sun. The hypothesis about the important role of …

Relationships between geological phosphorite deposition and biological apatite nucleation
have often been overlooked. However, similarities in biological apatite and phosphorite …

Tidally-influenced subterranean settings represent natural geomicrobiological laboratories,
relatively unexplored, that facilitate the investigation of new biomineralization processes …

Phosphorus is a nutrient fundamental to life and when it precipitates in modern
environments bacteria are intimately involved in its release, concentration, and …