Nitrogen availability is a pivotal control on terrestrial carbon sequestration and global
climate change. Historical and contemporary views assume that nitrogen enters Earth's land …

The immediate task facing exopaleontology is to define a strategy to explore Mars for a fossil
record during the decade‐long exploration program that lies ahead. Consideration of the …

Bulk sedimentary nitrogen isotope profiles are often used as proxies for depositional redox
conditions, nitrogen cycling, and nutrient uptake in modern and ancient marine systems. The …

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 …

Ammonium is present as a trace constituent in all granites, with an average concentration of
45 ppm (NH4+), equivalent to 35 ppm of elemental N. It shows wide variations related to …

Orogenic gold deposits formed in various terranes of most ages since the Paleoarchean and
generally consist of quartz veins hosted in shear zones formed at the ductile brittle transition …

The magnitude of isotopic variations between organic and inorganic nitrogen was examined
in samples from three stacked hydrocarbon reservoirs in the Fordoche Field (Louisiana Gulf …

Chemical and isotopic data for water co-extracted with hydrocarbons in oil and gas fields are
commonly used to examine the source of the formation water and possible impacts on …

Abstract The Central and North Deborah gold deposits are located in one of 15 mining
centers of the Bendigo gold field, central Victoria, Australia, a major world-class gold …

In contrast to predominantly hydrocarbon-rich natural gases in the western part of the
Central European Basin (CEB), accumulations of natural gases from the eastern part of the …