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Proceedings of the National Academy of Sciences of the United States of America, ISSN 0027-8424, 03/2017, Volume 114, Issue 13, p. E2571
  Emerging evidence suggests that atmospheric oxygen may have varied before rising irreversibly ~2.4 billion years ago, during the Great Oxidation Event (GOE).... 
Methane | Oxygen | Correlation analysis | Hydrogen | Biosphere | Oxidation
Journal Article
Nature Geoscience, ISSN 1752-0894, 05/2012, Volume 5, Issue 5, pp. 359 - 363
It has been hypothesized that, before widespread oxygenation about 2.45 billion years ago, the Earth's atmosphere contained an organic haze similar to that on... 
SOUTH-AFRICA | GEOSCIENCES, MULTIDISCIPLINARY | ARCHEAN ATMOSPHERE | KAAPVAAL CRATON | TRANSVAAL SUPERGROUP | OXYGENATION | OCEAN | PHOTOLYSIS | MASS-INDEPENDENT FRACTIONATION | SULFUR ISOTOPE RECORDS | CYCLE
Journal Article
Proceedings of the National Academy of Sciences of the United States of America, ISSN 0027-8424, 10/2013, Volume 110, Issue 44, p. 17638
  It is generally thought that the sulfate reduction metabolism is ancient and would have been established well before the Neoarchean. It is puzzling,... 
Hydrogen sulfide | Rocks | Metabolism | Sulfur | Isotopes
Journal Article
The Astronomy and Astrophysics Review, ISSN 0935-4956, 11/2018, Volume 26, Issue 1, pp. 1 - 72
Journal Article
Philosophical transactions. Series A, Mathematical, physical, and engineering sciences, ISSN 1364-503X, 10/2018, Volume 376, Issue 2132, p. 20170401
Life is sustained by a critical and not insubstantial set of elements, nearly all of which are contained within large rock reservoirs and cycled between... 
elemental cycling | biogeodynamics | nutrients | ATMOSPHERIC OXYGEN | PHOSPHORUS | SUBDUCTION ZONES | MULTIDISCIPLINARY SCIENCES | NITROGEN-CYCLE | GREAT OXIDATION EVENT | IRON-OXIDES | LARGE IGNEOUS PROVINCE | CONTINENTAL-GROWTH | BALTIC SEA | ISOTOPE FRACTIONATION
Journal Article
Geology, ISSN 0091-7613, 05/2010, Volume 38, Issue 5, p. 415
  A detailed record of the early-Earth sulfur (S) cycle is chronicled by the S isotope values of sulfide and sulfate preserved in the rock record.... 
Geology | Prokaryotes | Lakes | Sulfur | Sediments | Isotopes | Seawater
Journal Article
American Journal of Science, ISSN 0002-9599, 06/2005, Volume 305, Issue 6-8, pp. 467 - 502
Journal Article
Life, ISSN 2075-1729, 10/2019, Volume 9, Issue 4, p. 79
Nitrate is common in Mars sediments owing to long-term atmospheric photolysis, oxidation, and potentially, impact shock heating. The Atacama Desert in Chile,... 
biomass preservation | nitrate | sedimentation rates | mars | atacama desert | extremophiles
Journal Article
Journal of Geophysical Research - Biogeosciences, ISSN 0148-0227, 07/2008, Volume 113, Issue G3, pp. G03014 - n/a
In this study we examine the effects of varying Fe, Mo, and P concentrations on δ15N fractionation during N2 fixation in the cyanobacterium Anabaena... 
Anoxic and hypoxic environments | Biogeosciences | Nutrients and nutrient cycling | Geomicrobiology | Nitrogen cycling | Biosignatures and proxies | N2 fixation | δ15N | oceanic anoxic events | Diazotrophy | N isotopes
Journal Article