Sentences with phrase «around hydrothermal»

I think the various theories around hydrothermal vents are the best explanations for origin of life.

It offers an interactive exploration of the ocean floor in and around a hydrothermal vent.

Astrobiologists theorize that, like ancient Earth, life may have emerged around hydrothermal vents located around the moon's submerged rocky core.

The revolutionary discovery in the 1970s of a thriving complex marine ecosystem around the hydrothermal vents of the Galapagos Rift on the ocean floor of the eastern Pacific forever changed our understanding of habitability showing that life could also arise and flourish in the complete absence of sunlight in conditions that were utterly toxic to any other life forms on Earth.

More recently, however, microbial life found around hydrothermal vent ecosystems (i.e., the «Lost City» found in the Mid-Atlantic Ridge, which is cooler than those found at «black smokers») indicate that Carbon - 13 is not selected against Carbon - 12 in hydrogen - rich environments where microbial life is starved of carbon, essentially in the form of carbon dioxide (Alexander S. Bradley, Scientific American, December 2009: pp. 62 - 67).

Potential Europan habitats include deep - sea colonies based on heat - loving bacteria like those found around hydrothermal vents on Earth's ocean floor.

At the moment, scientists have confirmed, using DNA analysis, that snotworms are closely related to the tubeworms that thrive around hydrothermal vents and probably have existed for as long as whales, if not longer.

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

The unusual changes in currents may help explain how the larvae of the heat - loving creatures living around hydrothermal vents are dispersed through long stretches of near - freezing waters to reach other warm havens, says Adams.

The RNA world might have been born in clay, Ferris argued, perhaps the clay that coated the ocean floor around hydrothermal vents.

But some researchers have challenged that theory, noting that chemical activity around hydrothermal vents could produce similar structures.

Suggestions of hydrothermal activity on Europa led researchers to speculate that life there could resemble ecosystems around hydrothermal vents on Earth and would survive on chemosynthesis, extracting energy from chemicals.

Map of current land and ice separating the Weddell and Ross seas, courtesy of Wikimedia Commons / Wutsje / CIA Octopuses have made themselves at home in most of the world's oceans — from the warmest of tropical seas to the deep, dark reaches around hydrothermal vents.

Other researchers, however, say that the fossil stromatolites were not formed by living organisms, but by physical and chemical processes around hydrothermal vents.

Not exact matches

The two were collaborating on a study of mid-ocean ridges, chains of volcanoes and hydrothermal vents that snake around the planet like the seams on a baseball.

Pohlman believed chemosynthetic bacteria, like the kinds found around deep - ocean hydrothermal vents, must be the answer.

His team advanced an alternative hypothesis, stating that these curious structures were not true microfossils but pseudofossils formed by the redistribution of carbon around mineral grains during these hydrothermal events.

A hotspot on the ocean floor could become a living laboratory where marine scientists can study underwater volcanoes and the weird life that clusters around the plumes of superheated water spurting from hydrothermal vents.

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.

In the greater NZ region, we have undersea hot springs (hydrothermal vents of the Kermadecs), marine hydrocarbon seeps and gas hydrates (offshore eastern North Island — possible analogues for oceans on Icy Worlds), and terrestrial (on land) hot springs in the Taupo Volcanic Zone and elsewhere around the country.

Mars is thought to have contained oceans with similar conditions to those near hydrothermal vents at around the same time the fossils were thriving, living creatures.

After analyzing the water temperatures and the locations of the eggs, the researchers realized that these littered in hot water around known locations of hydrothermal vents, an opening in the sea floor out of which geothermally heated water flows.

Although less than 1 % of the sea floor where hydrothermal vents are suspected has been investigated, hundreds of hydrothermal vent fields have been identified around the globe in the past couple decades.

Geologists now know that the Gakkel Ridge is an active zone of slow spreading tectonic plates with massive amounts of activity including explosive emissions of super carbonated magma that have blown the tops off dozens of undersea mountains, produced mineral / metal riches from extensive hydrothermal vents throughout the range and holds sea life around smoker chimneys with abundant hydrogen - sulfide based ecosystems.

The new version of Google Earth allows users to mouse around under and over the seas, click on video clips of hydrothermal vents, read up on which seafoods are being harvested unsustainably, look at marine dead zones and sanctuaries and the like.

Lesson 1 - Plate Tectonics Lesson 2 - Mid-Ocean Ridges Lesson 3 - Deep - Sea Corals Lesson 4 - Subduction Zones Lesson 5 - Chemosynthesis and Hydrothermal Vent Life Lesson 6 - Deep - Sea Benthos Lesson 7 - Water Cycle Lesson 8 - Ocean Currents Lesson 9 - Ocean Waves Lesson 10 - Tides Lesson 11 - Energy from the Oceans Lesson 12 - Food, Water, and Medicine from the Sea Lesson 13 - Hurricanes Lesson 14 - Seamounts An average of 2,000 strong earthquakes and large volcanic eruptions occur every year all around the world.

The communities of bacteria around deep sea volcanic (hydrothermal) vents survive by converting highly toxic hydrogen sulfide into food through chemosynthesis much like surface algae convert sunlight to food via photosynthesis.