Noble gases within the crust originate from three main sources: the atmosphere, introduced
into the crust dissolved in groundwater; the mantle, in regions of magmatic activity; and …

Helium is an important, scarce, and strategic resource that is critical to national security and
advanced technology development. Although helium originates from mantle degassing and …

Horizontal drilling and hydraulic fracturing have enhanced energy production but raised
concerns about drinking-water contamination and other environmental impacts. Identifying …

uring the spring of 1960, an uncle showed me a 'petrifying spring'near Plaxtol in Kent
Dwhere twigs had been encased in a calcareous jacket. A twig was collected and having …

We detail here the general concepts behind using noble gases as a tracer of crustal fluid
processes and illustrate these concepts with examples applied to oil-gas-groundwater …

Commercial helium systems have been found to date as a serendipitous by-product of
petroleum exploration. There are nevertheless significant differences in the source and …

Helium and argon isotopes from fluid inclusions in individual colour zones (B, C, D, and E) of
a large scheelite crystal from the 88 Ma Dae Hwa W Mo deposit, South Korea, trace the …

Helium and argon isotopic and elemental compositions of fluids released by crushing pyrite
grains are reported from the Ailaoshan Gold Province, China. The province is a series of …

Earth degassing of CO2-rich fluids has been proven to contribute significantly to the global
carbon budget. The presence of ubiquitous outgassing reveals some degree of permeability …

Large-scale helium accumulations are rarely reported in tectonically active continental
subduction zones. This study shows geochemical variations in helium and other volatiles (N …