Sentences with phrase «in hydrothermal»

Faults (contrary to very popular theory needs) are always lubricated to some degree by a combination of, pore space water under pressure, phyllosilicate clay slurry (lots of it), lubricant metals like molybdenum (some - usually emplaced in hydrothermal processes of transport and atom precipitation with changes in pressure) and especially by copious amounts of «massive» (i.e. solid) graphite, that's almost always is present in fault surface,

The δ13C of both CO2 and CH4 in the liquid CO2 almost coincide with those in the hydrothermal fluid, suggesting that the liquid CO2 must be derived from the hydrothermal fluid.

We determined the chemical and isotopic compositions of the liquid CO2 found on Yonaguni IV knoll hydrothermal site, as well as those in hydrothermal fluid venting from the surrounding chimneys.

Temperatures from 53 to 103 °C were measured in hydrothermal fluids and sediments.

It thrives in hydrothermal...

Scientists are especially interested in measuring the amount of hydrogen gas in the plume, which would tell them how much energy and heat are being generated by chemical reactions in hydrothermal vents at the bottom of the moon's ocean.

Life on Earth likely began in hydrothermal systems (environments where hot water reacts with rocks), and there is abundant evidence for many locations where hydrothermal environments exists on Mars at the time when life might have originated in similar environments on Earth.

Sending out a spacecraft that can drill through the ice and probe for organisms will be the only way to find out if the moon in question doesn't have vaporous plumes like those that originate in the hydrothermal vents of Enceladus.

Merging genomes with geochemistry in hydrothermal ecosystems.

A research team — Carnegie's Sergey Lobanov and Alexander Goncharov, along with Konstantin Litasov of the Russian Academy of Science and Novosibirsk State University in Russia — focused on the high - pressure chemistry of a carbonate mineral called siderite, which is an iron carbonate, FeCO3, commonly found in hydrothermal vents.

The group is represented by possible habitat generalists (such as the large Enteroctopus dofleini which ranges from the intertidal to depths in excess of 450 m) and specialists (such as Vulcanoctopus hydrothermalis which is found only in hydrothermal vents).

New research is revealing details about how the exoskeleton of a certain type of deep - sea shrimp allows the animal to survive scalding hot waters in hydrothermal vents thousands of feet under water.

In addition, he notes, evaluating the fine structure of calcium carbonate mineralization deposited in hydrothermal systems during different periods of Earth's evolution may offer insights into which microbes lived at which times.

Curiosity's landing site may once have been a lake, but other intriguing sites suggest life might have found a refuge in hydrothermal springs below the surface.

«I'm sure all the people building geothermal power plants are very interested in equipment like this,» Gawell said, noting that electric submersible pumps are just as useful in hydrothermal applications.

The findings support the idea that the last universal common ancestor (LUCA) lurked in hydrothermal vents where hot water rich in hydrogen, carbon dioxide and minerals emerged from the sea floor.

Studies of life in hydrothermal vents and of the chemistry of hydrothermal vents have provided no information about the evolution of RNA and DNA and of their nucleotides from inorganic and simple organic molecules.

«Making organic molecules in hydrothermal vents in the absence of life.»

Such statements do not begin to address the conditions and processes that led to the assembly of the nucleotides — adenine, guanine, cytosine, thymine and uracil — nor do the statements indicate that the materials necessary to form the nucleotides might be present in hydrothermal vents.

First author Edel O'Sullivan, now a PhD candidate in Switzerland, said: «Previous studies investigating the origin of life have focused on synthesis in hydrothermal environments.

The oil droplets in the hydrothermal fluids initiated the efficient chemical precipitation of native gold and the formation of very complex - structured gold and uranium ore.»

«Whether those were extensive globally or more localized in these hydrothermal systems is not clear in the data that we have.»

«Thanks to our more than twenty years» experience in hydrothermal methods, we have succeeded in mastering this great challenge.»

We're talking about minutes in hydrothermal liquefaction and a few days in an anaerobic digester.»

In hydrothermal liquefaction, the waste is basically pressure cooked to produce a crude bio-oil.

With the help of Cindy Van Dover, a Duke University biologist and expert in hydrothermal vents, Nautilus is even studying the possibility of picking up snails and barnacles in the path of the mining tool and transplanting them to a temporary haven, to be brought home when the coast is clear.

According to a report in today's issue of the journal Nature, that modest rumble caused 10-fold increases in the flow of fluids in hydrothermal vent systems located nearly five miles away.

This chemical reaction between rock and water occurs, for example, in hydrothermal vents on the ocean floor.

«But, of course, we know there can be carbonaceous materials made in other processes — like in hydrothermal vents — consistent with looking like microfossils that also have some carbon signal.

This is a pastel painting of a new species, Xenoturbella profunda, found by researchers in a hydrothermal vent in the Gulf of California.

Further calculations by Catling and his team conclude that no abiotic methane sources on a rocky planet could produce enough of the gas to counteract this process — whether it is volcanic outgassing from a planet's interior, chemical reactions in hydrothermal vents, even asteroid impacts.

Bacteria thrive virtually everywhere on Earth — from sub-zero temperatures to over 750 degrees F (in hydrothermal vents at the bottom of the ocean), and in widely varying oxygen, pressure and nutrient conditions.

Not exact matches

Marbles in metamorphic aureoles and iron - rich skarns appear to be favored sites for gold mineralization in these deposits, perhaps due to the rheological character, permeability after fracturing, and chemical reactivity of those rocks to alteration by hydrothermal fluids.

Yet we know that life on Earth can thrive in extreme conditions: from the Antarctic (where temperatures can drop to almost -90 °C) to hydrothermal vents on the ocean floor (where temperatures can exceed 460 °C).

PRETTY PLANET One Strange Rock contains gorgeous images of Earth, such as these colorful hydrothermal fields in Dallol, Ethiopia.

The Faulty Towers complex is the largest array of chimneys in the Mothra hydrothermal vent field.

Following Wednesday's news that there seem to be hydrothermal vents churning away in the warm, alkaline seas inside Saturn's moon Enceladus, researchers announced airtight evidence yesterday that Jupiter's moon Ganymede also has a -LSB-...]

We found that the particles seen in our images, which were droplets of ocean only hours earlier, bore evidence of large organic molecules and compounds that indicated hydrothermal activity similar to that observed at deep - sea vents on Earth's seafloor.

Since then, many other possible crucibles have been identified: deep underground, in the open ocean, by hydrothermal vents on the ocean floor, on a radioactive beach and on the surface of a lump of clay.

One site at Columbia Hills in Gusev crater, was visited previously by the Spirit rover and features silica deposits interpreted by some as analogous to hydrothermal springs known to be inhabited on Earth.

Rocks found in Greenland in 2007 suggest hydrothermal vents were present 3.8 billion years ago, just before life is thought to have originated.

These micrometer - scale structures are probably remnants of microorganisms that once lived amidst ancient hydrothermal vents, researchers suggest March 1 in Nature.

Many of the sub's 4,664 dives have made history: Alvin surveyed Titanic's wreckage in 1986, the first known hydrothermal vents in the 1970s, and the BP oil spill in 2010.

SIGNS OF LIFE In rocks left over from ancient hydrothermal vents, these microscopic tubes of hematite, an ore of iron, may be remnants of early microbes.

NAMSS undergraduate Darin Taylor (second from left) and OSU researchers investigate hydrothermal vents in Crater Lake, Oregon.

She describes her project as studying hyperthermophilic archaea, the living occupants of deep - sea hydrothermal vents that survive in extreme heat, pressure, and chemical toxicity.

Biochemists have managed to synthesise 10 of them in experiments that simulate lifeless prebiotic environments, using proxies for lightning, ionising radiation from space, or hydrothermal vents to provide the necessary energy.

Image of a hydrothermal vent field along the Arctic Mid-Ocean Ridge, close to where «Loki» was found in marine sediments.

Given developing efforts to mine deep - sea hydrothermal vent fields for precious metals, the scientists involved in this research suggest that conservationists and management agencies need to consider a broader range of factors in their efforts to predict the environmental impacts and the resiliency of affected communities.

Deep - sea hydrothermal vents in the Pescadero Basin emit scalding liquids that form light - colored carbonate spires.