Global nitrogen cycle: critical enzymes, organisms, and processes for nitrogen budgets and dynamics
Nitrogen (N) is used in many of life's fundamental biomolecules, and it is also a participant in
environmental redox chemistry. Biogeochemical processes control the amount and form of N …
environmental redox chemistry. Biogeochemical processes control the amount and form of N …
Subduction-driven volatile recycling: A global mass balance
Volatile elements (water, carbon, nitrogen, sulfur, halogens, and noble gases) played an
essential role in the secular evolution of the solid Earth and emergence of life. Here we …
essential role in the secular evolution of the solid Earth and emergence of life. Here we …
The nitrogen budget of Earth
We comprehensively compile and review N content in geologic materials to calculate a new
N budget for Earth. Using analyses of rocks and minerals in conjunction with N–Ar …
N budget for Earth. Using analyses of rocks and minerals in conjunction with N–Ar …
Nitrogen-enhanced greenhouse warming on early Earth
Early in Earth's history, the Sun provided less energy to the Earth than it does today.
However, the Earth was not permanently glaciated, an apparent contradiction known as the …
However, the Earth was not permanently glaciated, an apparent contradiction known as the …
Environmental effects on ammonium adsorption onto clay minerals: Experimental constraints and applications
Abstract Adsorption of ammonium (NH 4+) by clay minerals in soil/sediment and altered
oceanic crust plays an important role in Earth's geological nitrogen cycle by transporting …
oceanic crust plays an important role in Earth's geological nitrogen cycle by transporting …
Ammonium stability and nitrogen isotope fractionations for NH4+–NH3 (aq)–NH3 (gas) systems at 20–70 C and pH of 2–13: Applications to habitability and nitrogen …
Ammonium/ammonia is an essential nutrient and energy source to support life in oceanic
and terrestrial hydrothermal systems. Thus the stability of ammonium is crucial to determine …
and terrestrial hydrothermal systems. Thus the stability of ammonium is crucial to determine …
Nitrogen speciation in mantle and crustal fluids
Y Li, H Keppler - Geochimica et Cosmochimica Acta, 2014 - Elsevier
Seventy-nine experiments have been carried out at 600–1400° C, 2–35 kbar, and oxygen
fugacities ranging from the Fe–FeO to the Re–ReO 2 buffer to investigate the nitrogen …
fugacities ranging from the Fe–FeO to the Re–ReO 2 buffer to investigate the nitrogen …
Nitrogen in the silicate Earth: Speciation and isotopic behavior during mineral–fluid interactions
Nitrogen is the main constituent of Earth's atmosphere and a key component of the
biosphere, but it is a trace element in the major silicate reservoirs. The relatively low …
biosphere, but it is a trace element in the major silicate reservoirs. The relatively low …
Diamond isotope compositions indicate altered igneous oceanic crust dominates deep carbon recycling
A long-standing unresolved problem in understanding Earth's deep carbon cycle is whether
crustal carbon is recycled beyond arc depths. While isotopic signatures of eclogitic …
crustal carbon is recycled beyond arc depths. While isotopic signatures of eclogitic …
Devolatilization history and trace element mobility in deeply subducted sedimentary rocks: Evidence from Western Alps HP/UHP suites
Metapelitic rocks of the Schistes Lustrés in the Cottian Alps, Italy (peak metamorphic
conditions of 350–500° C, 1.2–2.0 GPa) and at the UHP Lago di Cignana locality …
conditions of 350–500° C, 1.2–2.0 GPa) and at the UHP Lago di Cignana locality …