Sentences with phrase «hosted hydrothermal»

NE Syrtis is an impact crater that may have hosted hydrothermal activity for some time in the distant past.

Not exact matches

The economic Battle Mountain — Cortez — Eureka Trend gold deposits were deposited as mineralized hydrothermal sedimentary - host replacement horizons and breccia zones along major fault structural zones where alteration and anomalous gold - silver - arsenic - antimony - thallium mineralization are present.

These may also host life forms like those inhabiting hydrothermal vents on Earth.

Gravest doubts emerged in 2002, when a team led by Oxford's Professor Martin Brasier (co-author of this current study) revealed that the host rock was not part of a simple sedimentary unit but rather came from a complex, high - temperature hydrothermal vein, with evidence for multiple episodes of subsurface fluid flow over a long time.

However, the hydrothermal theory is contradicted by geological evidence that the gold concentration must have taken place during the formation of host sediments on the Earth's surface.

The network spans the Juan de Fuca plate, which sits between the Pacific and the North American plates and hosts earthquakes and tsunamis, giant clams and whale pods, along with hydrothermal vents and frozen methane deposits.

So the toxin in the fish must come from elsewhere, perhaps hydrothermal vents, which are likely to have high concentrations of mercury and to host sulfate - reducers, he says.

In the deep gold mines of South Africa, and under the sea, at hydrothermal vents where breaks in the fissure of Earth's surface that release geothermally heated waters — hydrogen - rich fluids host complex microbial communities that are nurtured by the chemicals dissolved in the fluids.

Recent research has hinted that neighboring hydrothermal vents might host different arrays of life, but the scene in the Gulf of California, as Goffredi, Johnson and their colleagues described it in the July 26 Proceedings of the Royal Society B (pdf), provides one of the first dramatic examples of this trend.

In each segment we located deep - sea hydrothermal vents hosting high - temperature black smokers up to 382.8 °C and diffuse venting.