A Serpentinite-Hosted Ecosystem: The Lost City Hydrothermal Field

  title={A Serpentinite-Hosted Ecosystem: The Lost City Hydrothermal Field},
  author={Deborah S. Kelley and J. A. Karson and Gretchen L. Fr{\"u}h-Green and Dana R. Yoerger and Timothy M. Shank and David A Butterfield and John M. Hayes and Matthew O. Schrenk and Eric James Crane Olson and Giora Proskurowski and Michael V. Jakuba and Alice Jane Bradley and Benjamin Larson and Kristine N. Ludwig and Deborah A. Glickson and Kate L. Buckman and Alexander S. Bradley and William J. Brazelton and Kevin K. Roe and Mitch J. Elend and Adélie Delacour and Stefano Michele Bernasconi and Marvin D. Lilley and John A. Baross and Roger Everett Summons and Sean P. Sylva},
  pages={1428 - 1434}
The serpentinite-hosted Lost City hydrothermal field is a remarkable submarine ecosystem in which geological, chemical, and biological processes are intimately interlinked. Reactions between seawater and upper mantle peridotite produce methane- and hydrogen-rich fluids, with temperatures ranging from <40° to 90°C at pH 9 to 11, and carbonate chimneys 30 to 60 meters tall. A low diversity of microorganisms related to methane-cycling Archaea thrive in the warm porous interiors of the edifices… 

Sources of organic nitrogen at the serpentinite‐hosted Lost City hydrothermal field

The source and cycling of organic nitrogen at an oceanic serpentinizing environment, the Lost City hydrothermal field, is investigated and data indicate nitrogen is readily available to microbial communities at Lost City.

Abiogenic Hydrocarbon Production at Lost City Hydrothermal Field

Concentration, and stable and radiocarbon isotope, data from hydrocarbons dissolved in hydrogen-rich fluids venting at the ultramafic-hosted Lost City Hydrothermal Field show a distinct “inverse” trend in the stable carbon and hydrogen isotopic composition of C1 to C4 hydrocars, compatible with FTT genesis.

Fossil evidence for serpentinization fluids fueling chemosynthetic assemblages

This finding shows that serpentinization-related fluids, unaffected by high-temperature hydrothermal circulation, can occur on-axis and are able to sustain high-biomass communities.

Hydrothermal vents and the origin of life

Submarine hydrothermal vents are geochemically reactive habitats that harbour rich microbial communities. There are striking parallels between the chemistry of the H2–CO2 redox couple that is present

Microbial ecology of the newly discovered serpentinite-hosted Old City hydrothermal field (southwest Indian ridge)

The microbial ecology of the ‘Lost City’-type Old City hydrothermal field, recently discovered along the southwest Indian ridge, is presented and this first description of its microbial ecology opens up attractive perspectives for understanding environmental factors shaping communities and metabolisms in oceanic serpentinite-hosted ecosystems.

Fluid mixing and the deep biosphere of a fossil Lost City-type hydrothermal system at the Iberia Margin

Examination of fossil microbial communities and fluid mixing processes in the subseafloor of a Cretaceous Lost City-type hydrothermal system at the magma-poor passive Iberia Margin appears that, wherever they occur, they can support microbial life, even in deep subseAFloor environments.

A serpentinite-hosted ecosystem in the Southern Mariana Forearc

The SSF appears to be a serpentinite-hosted ecosystem within a forearc (convergent margin) setting that is supported by fault-controlled fluid pathways connected to the decollement of the subducting slab, and supports the prediction that serpentinization of peridotite vents may be widespread on the ocean floor.



Low archaeal diversity linked to subseafloor geochemical processes at the Lost City Hydrothermal Field, Mid-Atlantic Ridge.

First analyses of microbial communities inhabiting carbonate chimneys awash in warm, high pH fluids at the LCHF and the predominance of a single group of methane-metabolizing Archaea are reported, expanding the range of known geological settings that support biological activity to include submarine hydrothermal systems that are not dependent upon magmatic heat sources.

Volcanoes, Fluids, and Life at Mid-Ocean Ridge Spreading Centers

▪ Abstract The recent recognition of a potentially vast, unexplored hot microbial biosphere associated with active volcanism along the global mid-ocean ridge network has fundamentally shifted

Anomalous CH4 and NH4+ concentrations at an unsedimented mid-ocean-ridge hydrothermal system

SINCE the discovery in 1977 of sea-floor hydrothermal systems, the study of the chemistry of the venting fluids has transformed our understanding of the geochemical cycles that influence the

Distinguishing ultramafic‐from basalt‐hosted submarine hydrothermal systems by comparing calculated vent fluid compositions

Submarine hydrothermal vent fluid compositions may be controlled by peridotite-seawater or basalt-seawater reactions. Previous studies of slow-spreading ridges indicate that in addition to basalts,

Discovery of abundant hydrothermal venting on the ultraslow-spreading Gakkel ridge in the Arctic Ocean

Evidence for active hydrothermal venting on the Gakkel ridge is presented, which is the slowest spreading and least explored mid-ocean ridge and requires a reassessment of the geologic conditions that control hydroThermal circulation on ultraslow-spreading ridges.

Mariana blueschist mud volcanism: Implications for conditions within the subduction zone

Several recently discovered active mud volcanoes on the nonaccretionary Mariana convergent plate margin are erupting slab-derived fluids, serpentine mud, and metamorphosed rocks from depths of as

Influence of sea-floor spreading on the global hydrothermal vent fauna

ONE remarkable discovery of recent decades is the presence of hundreds of unusual species, including fourteen new families, at hydrothermal vents. These animals, unknown from other habitats, live in

Geologic implications of seawater circulation through peridotite exposed at slow-spreading mid-ocean ridges

Peridotite denuded by tectonic extension and exposed at the seafloor adjacent to slow-spreading centers hosts hydrothermal circulation of seawater. The reaction of seawater with peridotite causes