Sentences with phrase «seafloor vents»

(In the open ocean, such seafloor vents support a broad range of complex organisms — including worms and more — despite a total lack of sunlight.)

By Year 1.1 billion, deep - sea hematite - bearing rock found in the Marble Bar chert formation of northwestern Australia indicates that iron - rich water gushed from volcanically heated seafloor vents were able to mix with cooler oxygen - rich seawater (Ohmoto et al, Nature Geoscience, March 15, 2009; PSU press release, and in EurkaAlert; and Sid Perkins, ScienceNews, April 11, 2009).

In the waters off Antarctica at the southernmost seafloor vents where hot water percolates from below, piles of hairy crabs swarm in the thousands.

Clams have turned up in the sunless, high - pressure depths surrounding seafloor vents.

E. laminata lives 1,000 to 3,300 meters deep in the Gulf of Mexico, near seafloor vents that seep energy - rich compounds...

The authors argue that it comes from hydrothermal activity on the ocean floor, perhaps seafloor vents like those on Earth that spew H2 and support rich microbial life.

And during an expedition in the Atlantic Ocean, her team discovered a new type of seafloor vent.

Not exact matches

More amazingly, we now know that beneath the crust of Enceladus is a global ocean of liquid saltwater and organic molecules, all being heated by hydrothermal vents on the seafloor.

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.

In Pescadero Basin, however, hydrothermal - vent fluids pass through thick layers of seafloor mud.

The seafloor along the Alarcón Rise is covered in young, fresh lava, and the fluids spewing out of the vents are very hot (up to 360 degrees Celsius) and rich in metal sulfides that form dark, crumbly chimneys known as «black smokers.»

Water depth, geology of the seafloor, temperature and chemistry of the vent fluids, and the ability of larvae from other vents to colonize the site all play roles.

If some of these larvae survive long enough to reach another hydrothermal vent, they may settle on the seafloor, grow into adults, and colonize a new vent.

The organisms likely survive using mechanisms similar to the ever - increasing parade of creatures that have been discovered living in the total darkness of hydrothermal vents at the bottom of the ocean, deriving energy from minerals in seafloor rocks.

The second spot was Axial Seamount, an active underwater volcano, along with its associated hydrothermal vents, where the team could study the transfer of minerals from beneath the seafloor into the water and access hardy microbes that thrive in the vent fluids, which can reach 250 degrees Fahrenheit.

A team of geologists led by David Clague then used a tethered underwater robot, the remotely operated vehicle (ROV) Doc Ricketts, to dive down to the seafloor, fly around the vents, and collect video and samples of rocks and hot water spewing from the chimneys.

Analyses of a recently discovered type of hot vent ecosystem on the seafloor suggest new possibilities for how life evolved

In the third type of vent environment, «hydrothermal seeps,» much cooler (less than 30 - 60 degrees Celsius) water trickles out of lava flows interleaved with seafloor mud.

«We wanted to map the ridge to see where vent fields were likely to be,» Baker says, riffling through the multicolored maps of the seafloor that clutter the desk in his Seattle office.

Hydrothermal vents form by an analogous method: Ion - rich hot water is expelled from the seafloor and then begins to dissolve, forming a porous shell of metal extending upward.

Compared with manganese nodules, the seafloor sulfides associated with hydrothermal vents have a huge advantage: They are much easier to get to.

This research was partly based on seafloor sampling at hydrothermal vent sites using the NOC maintained robotic vehicle Isis, which was launched over the side of the RRS James Cook.

Alkaline hydrothermal vents are found on the seafloor near where tectonic plates meet.

One question that has long and intensively been discussed in research is: Where and how deep does seawater penetrate into the seafloor to take up heat and minerals before it leaves the ocean floor at hydrothermal vents?

That in turn gives us hints to what conditions exist at potentially habitable vents on the seafloor.

Scientists working off the California coast use chemical - sniffing probes, robotically driven subs, and seafloor - tethered temperature sensors to watch flows of lava pave over a once - thriving ecosystem at hydrothermal vents several kilometers below the ocean's surface.

Eventually that methane is carried up to the seafloor by the circulating vent water.

Lost Nucleotides Although Alexander S. Bradley's article «Expanding the Limits of Life» provides a fascinating account of the discovery of microbes in a previously unknown kind of hydrothermal vent ecosystem on the seafloor, it does not substantiate his claim that the findings hint that life may have originated in an environment like the Lost City hydrothermal vent.

While the methane in the Von Damm vent system they studied was produced through chemical reactions (abiotically), it was produced on geologic time scales deep beneath the seafloor and independent of the venting process.

The bizarre habitat gleamed in the lights of an underwater robotic probe as it explored the environs of a seafloor spring spewing water at superhot temperatures — known as a hydrothermal vent.

At the other extreme, searing - hot ecosystems spring up around hydrothermal vents on seafloors.

Rich ecosystems exist on our own planet's seafloor, where volcanic rifts create hydrothermal vents.

In a field study, Diane Adams, a marine biologist at Woods Hole Oceanographic Institution in Massachusetts, and her colleagues measured the currents near the seafloor along the East Pacific Rise, a submarine ridge south - southwest of Acapulco, Mexico, that sports many hydrothermal vent systems.

The rock is an extrusion from a hydrothermal vent, not seafloor sediment.

Although the evidence was subsequently contested, some single - celled microbial life lacking a nucleus that segregates their internal DNA or RNA («prokaryotes») from the surrounding cytoplasm may have flourished in darkness within cracks in Earth's seafloor crust and around deep, warm or boiling hot ocean springs (hydrothermal or volcanic vents, such as at Lost City or at black smokers) without a need for light or free oxygen in the oceans or atmosphere.

Microbial life, however, should have survived in or around cracks in warm ocean seafloors, deep volcanic vents, surface volcanic springs, and other warm niches.

Eventually, the hot, mineral - rich fluid rises again and gushes out of openings in the seafloor — hydrothermal vents — at temperatures up to about 400 degrees Centigrade.

This Website offers information and resources for studying seafloor animals, hydrothermal vents, mid-ocean ridges, axial volcano, lava flow, and tools and technology.

The vents exist on the seafloor as much as 1.5 miles below the surface and support a rich ecosystem that includes fish, shrimp, tubeworms, mussels, crabs and clams.

A search for gas venting on the Arctic seafloor focused on pingo - like - features (PLFs) on the Beaufort Sea Shelf because they may be a direct consequence of gas hydrate decomposition at depth.

A section of the Arctic Ocean seafloor that holds vast stores of frozen methane is showing signs of instability and widespread venting of the powerful greenhouse gas, according to the findings of an international research team led by University of Alaska Fairbanks scientists Natalia Shakhova and Igor Semiletov.

Scientists at Columbia's Lamont - Doherty Earth Observatory have found evidence of hydrothermal vents on the seafloor near Antarctica, formerly a blank spot on the map for researchers wanting to learn more about seafloor formation and the bizarre life forms drawn to these extreme environments.

Scientists are in the early stages of building a fiber optic network on the seafloor for observing, in real time, deep - sea hydrothermal vents — places where super-heated water and minerals spew from Earth's crust offering clues about how life on the planet may have began.

In addition to immediate release of greenhouse gases from seafloor eruptions, the subsequent increased high and low temperature hydrothermal venting may impact the CO2 output.

But a talk at the AGU Chapman Conference today by palaeoclimatologist Lowell Stott of the University of Southern California suggests a radically different reservoir: pools of liquid carbon dioxide trapped in seafloor hydrothermal vents.