Submarine hydrothermal sulfide ores occur at mid-ocean ridges, intra-oceanic arcs and in
back-arc basins associated with host rocks of highly variable composition. Pyrite is the …

Both hydrogen and methane are consistently discharged in large quantities in hydrothermal
fluids issued from ultramafic-hosted hydrothermal fields discovered along the Mid-Atlantic …

Active deep-sea hydrothermal vents are hosted by a range of different rock types, including
basalt, peridotite, and felsic rocks. The associated hydrothermal fluids exhibit substantial …

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 …

A regional survey of alkaline springs in Oman and Ligurian ophiolites shows that the
alkaline water compositions significantly vary from one ophiolite to the other and within the …

We introduce a database of hydrothermal vent fluid compositions extracted from peer‐
reviewed publications. The database includes general fluid parameters (eg, temperature …

Ongoing seafloor exploration highlights that ultramafic-hosted seafloor massive sulfide
deposits (UM-SMS) are ubiquitous along slow to ultra-slow spreading ridges. These …

Hydrocarbons such as CH 4 are known to be formed through the Fischer-Tropsch or
Sabatier type reactions in hydrothermal systems usually at temperatures above 100° C …

Geofluids (2010) 10, 161–192 Abstract Calculations are presented of the extent to which
chemical disequilibria are generated when submarine hydrothermal fluids mix with sea …

The Ari vent field (AVF) is an ultramafic-hosted seafloor massive sulfide (SMS) deposit in the
middle part of the Central Indian Ridge. In this paper, we describe the detailed mineralogy …