Tag: "seafloor" at biology news
Ocean frontier revealed: scientists to describe unexpected discoveries of arctic research cruise
... deep interior of the earth rising directly to the seafloor
as solid rock through a "great gash" dotted with volcanoes. "This incredibly successful voyage for Healy exceeded all expectations in every department," said chief scientist Peter Michael of the University of Tulsa. Michael will join other Healy res...
Healy researchers make a series of striking discoveries about Arctic Ocean
...fied by a camera and sensor package lowered to the seafloor
from the Polarstern that showed intact sulfide chi..., where new ocean crust is continuously created as seafloor
spreading takes place through volcanic activity. Many theories about seafloor
spreading can be test...
December Media Mighlights: GEOLOGY and GSA TODAY
... suggest that the seismicity was associated with a seafloor
eruption. This marks the first time an eruption h...tical to structures that are formed on the present seafloor
at sites where natural gas flows from sediments into the overlying ocean water. In recent years, sub...
January media highlights: GEOLOGY and GSA TODAY
...3200 km (2000 miles) of southwestern Pacific Ocean seafloor
using a high-resolution sonar system. Longer than ...raced out the shapes of the elongated hills on the seafloor
5 km below. The triple junction trace contains the geological history of three tectonic plates that ...
Scientists conduct first DNA field tests on Antarctic soil microbes
...ents found over a mile deep in the ocean where new seafloor
is being formed. While vent microbes set the upper end of the temperature scale in the marine environment, the polar regions set the lower limit in the terrestrial environment, says Cary, who is a marine biologist at the University of Delaware. Past ...
URI scientists study life buried deep beneath the ocean floor
...ered from depths as great as a half-mile below the seafloor
and have been estimated to constitute one-tenth to...he highest rates of microbial activity beneath the seafloor
occur in a narrow zone along continental margins where the deeply buried methane comes into contact ...
April GEOLOGY and GSA TODAY media highlights
...ion of methane gas through the uppermost ~500 m of seafloor
sediments. This is remarkable because methane in ...one into the ocean. The cycling of methane between seafloor
sediments, the ocean, and the atmosphere (where methane is a strong greenhouse gas) is an important ...
Expedition to explore remarkable deep-sea mountain
...earlier by MBARI, collecting biological samples of seafloor
organisms and conducting surveys of fish, seabird and marine mammal populations around the seamount. If possible, they will also use special darts to collect tissue samples from passing sperm whales for genetic studies to understand broader populatio...
Frozen 'lake' beneath Antarctica ideal to test sterile drilling techniques
..., analogous to the novel thermophiles found in hot seafloor
vents living at temperatures above the sea-level boiling point of water (100C or 212F). All this makes it essential that drills not introduce bacteria into a new environment, whether a sub-glacial lake isolated for half a million years or the ice cap...
University of California, Riverside study dates our ancestors
...ed in a relatively large animal that inhabited the seafloor
and thus produced trace fossils. Early bilaterians, in particular, were soft-bodied and thus difficult to preserve." The trace fossils examined in the study are from the transition between the Proterozoic Era (2.5 billion to 544 million years ago), ...
Evolution upset: Oxygen-making microbes came last, not first
...abundant free iron in the oceans and rained to the seafloor
creating the economically important banded iron formations. The advent of atmospheric oxygen also caused sulfide minerals on land to break down into sulfates and wash into the oceans where sulfur-loving bacteria gobbled them up. The earliest geolog...
January GEOLOGY and GSA TODAY media highlights
...orical times. These fault escarpments and deformed seafloor
sediments associated with a cluster of shallow seismicity suggest that these thrusts are active and may pose a significant earthquake and tsunami hazard to the coasts of Portugal, Spain, and Morocco. Life after snowball: The oldest complex Ediacaran...
Ocean report calls for the immediate creation of marine reserves throughout the United States
... trawled each year, causing massive disturbance to seafloor
habitats. He also cited studies showing that most of the world's fisheries are at or above sustainable level, as commercial fishers harvest some 80 million metric tons of seafood annually. A fully protected marine reserve offers one of the best tools...
Bugs from the deep may be window into the origins of life -- on earth and beyond
...Meeting. From South African gold mines, to cooled seafloor
lavas, these subsurface bugs have provided clues to the potential for life on Mars, and the diversity of possible fuel sources for life, including nuclear energy and toxic waste. Similar Environments on Mars Life on Mars may exist in "pillow lavas,...
New life discovered in deep ocean floor
...k, analyzing the microbial inhabitants of the deep seafloor
sediment. The reward: discovering new life and gai...s of hydrate distribution and rate of formation in seafloor
sediments. In the lab, INEEL microbiologist Rick Colwell and his team are literally starving the met...
Scientists urge managers to limit use of destructive fishing gears
...ration (NOAA). "We now know that structures on the seafloor
are critical for the future of cod, rockfish, and ... technology to see these habitats, to see that the seafloor
is not just an endless flat expanse, and to begin to understand how we are altering deep sea marine ...
15-foot hypodermic needles provide evidence for vast oceanic crustal biosphere
...the crustal rocks that make up most of the Earth's seafloor
are providing the best evidence yet to support the...heavy-metal-rich fluid environments in areas where seafloor
is being created at mid-ocean ridge spreading centers. These areas are subject to frequent volcanic ...
Scientists returning to field of eerie thermal spires
...l vent field, so named partly because it sits on a seafloor
mountain named the Atlantis Massif, was discovered...n ridge spreading centers. That's where very young seafloor
is created often dramatically during volcanic eruptions and vented water can be as hot as 700 F. ...
Hydrothermal vent systems could have persisted millions of years, incubated life
The staying power of seafloor
hydrothermal vent systems like the bizarre Lost Ci... volcanism, it greatly increases the places on the seafloor
of early Earth where microbial life could have started. It also means explorers may have more places...
Extraordinary Number of unique species discovered in Caribbean
...edging of harbors and estuaries, and the laying of seafloor
pipelines, are just some of the threats these species face as development in the region reaches even the most remote islands and keys. "Anyone who remembers the building of an airstrip that eliminated a dozen of Bermuda's marine species in the 1940s...
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