Understanding and quantifying the global methane (CH 4) budget is important for assessing
realistic pathways to mitigate climate change. Atmospheric emissions and concentrations of …

Geologic molecular hydrogen (H 2) occurs in the subsurface and vents and seeps at the
surface. However, this valuable natural resource is under-utilized in the economy because …

Natural gas hydrate is ice‐like mixture of gas (mostly methane) and water that is widely
found in sediments along the world's continental margins and within and beneath permafrost …

Ethane is the second most abundant component of natural gas in addition to methane, and—
similar to methane—is chemically unreactive. The biological consumption of ethane under …

Water plays a critical role in erosion and sediment transport and this relationship is most
evident in the hyperarid Atacama Desert of Northern Chile, a region characterized by …

The existence of geological fluids rich in natural hydrogen (H 2) raises the question about
the energy potential of this carbon-free resource. However, to date there is no exploration …

The petroleum exploration well Luntan-1 (LT1) located in the Tabei Uplift, Tarim Basin,
China reached vertical depth 8882 m and is now the deepest well in Asia. A significant …

Methane (CH 4) is a powerful greenhouse gas, whose natural and anthropogenic emissions
contribute∼ 20% to global radiative forcing. Its atmospheric budget (sources and sinks) …

At marine cold seeps, gaseous and liquid hydrocarbons migrate from deep subsurface
origins to the sediment-water interface. Cold seep sediments are known to host …

Abstract Deep marine sediments (> 1mbsf) harbor~ 26% of microbial biomass and are the
largest reservoir of methane on Earth. Yet, the deep subsurface biosphere and controls on …