News tagged with volcanic rocks
Volcanic super-eruptions may have surprisingly short fuses
Enormous volcanic eruptions with potential to end civilizations may have surprisingly short fuses, researchers have discovered.
Space & Earth / Earth Sciences
May 30, 2012 |
4.9 / 5 (9) |
0
|
Microbes go rafting on floating volcanic rocks
Volcanoes bring death and destruction, but out of the ashes life soon finds fertile ground. A unique experiment is sifting through floating debris from an ongoing volcanic event to see how microbes move in. ...
Space & Earth / Earth Sciences
May 01, 2012 |
5 / 5 (2) |
0
|
Solution to ancient rock puzzle posited
A superplume, or massive episode of volcanic eruptions that related to extensive melting of the Earth's mantle, could explain the puzzling reappearance of major iron formations long after the rise in atmospheric ...
Space & Earth / Earth Sciences
Apr 27, 2012 |
5 / 5 (2) |
0
Water treatments alone not enough to combat fluorosis in Ethiopia
Increased intake of dietary calcium may be key to addressing widespread dental health problems faced by millions of rural residents in Ethiopia's remote, poverty-stricken Main Rift Valley, according to a new Duke University-led ...
Apr 26, 2012 |
not rated yet |
3
Dawn spacecraft reveals secrets of giant asteroid Vesta
(Phys.org) -- Findings from NASA's Dawn spacecraft reveal new details about the giant asteroid Vesta, including its varied surface composition, sharp temperature changes and clues to its internal structure. ...
Space & Earth / Space Exploration
Apr 26, 2012 |
4.4 / 5 (7) |
4
|
Building blocks of early Earth survived collision that created moon
Unexpected new findings by a University of Maryland team of geochemists show that some portions of the Earth's mantle (the rocky layer between Earth's metallic core and crust) formed when the planet was much smaller than it is now, an ...
Space & Earth / Earth Sciences
Feb 18, 2012 |
5 / 5 (5) |
6
Lava formations in eastern Oregon linked to rip in giant slab of Earth
Like a stream of air shooting out of an airplane's broken window to relieve cabin pressure, scientists at Scripps Institution of Oceanography at UC San Diego say lava formations in eastern Oregon are the result ...
Space & Earth / Earth Sciences
Feb 15, 2012 |
4 / 5 (3) |
0
|
Could Siberian volcanism have caused the Earth's largest extinction event?
Around 250 million years ago, at the end of the Permian geologic period, there was a mass extinction so severe that it remains the most traumatic known species die-off in Earth's history. Although the cause ...
Space & Earth / Earth Sciences
Jan 09, 2012 |
4.7 / 5 (3) |
1
|
Scientists find microbes in lava tube living in conditions like those on Mars
(PhysOrg.com) -- A team of scientists from Oregon has collected microbes from ice within a lava tube in the Cascade Mountains and found that they thrive in cold, Mars-like conditions.
Space & Earth / Space Exploration
Dec 15, 2011 |
4.8 / 5 (17) |
13
|
Were martian rocks weathered by water?
There are many ways rocks can be textured. Wind erosion, water erosion, the escape of volcanic gases during their formation (in the case of igneous rocks)… all these forces can create the pitted textures ...
Space & Earth / Space Exploration
Oct 05, 2011 |
4 / 5 (3) |
0
Endeavour crater provides possible evidence of past water
(PhysOrg.com) -- The Mars rover Opportunity is a senior citizen, but still spry, and as it peers over the rim of the giant impact crater called Endeavour, it's embarking on what could be called a new mission, ...
Space & Earth / Space Exploration
Sep 04, 2011 |
5 / 5 (8) |
3
|
Opportunity begins study of martian crater, new samples 'unlike any seen before'
(PhysOrg.com) -- The initial work of NASA's Mars rover Opportunity at its new location on Mars shows surface compositional differences from anything the robot has studied in its first 7.5 years of exploration.
Space & Earth / Space Exploration
Sep 02, 2011 |
4.7 / 5 (13) |
28
|
Volcanic artifacts imply ice-age mariners in prehistoric Greece
Mariners may have been traveling the Aegean Sea even before the end of the last ice age, according to new evidence from researchers, in order to extract coveted volcanic rocks for pre-Bronze Age tools and ...
Space & Earth / Earth Sciences
Aug 29, 2011 |
4.6 / 5 (8) |
4
|
A billion-year-old piece of North America traced back to Antarctica
An international team of researchers has found the strongest evidence yet that parts of North America and Antarctica were connected 1.1 billion years ago, long before the supercontinent Pangaea formed.
Space & Earth / Earth Sciences
Aug 08, 2011 |
4.8 / 5 (14) |
0
|
Ancient rock under Haiti came from 1,000+ miles away, 1 billion years older than previously thought
(PhysOrg.com) -- Earthquakes and volcanoes are known for their ability to transform Earth's surface, but new research in the Caribbean has found they can also move ancient Earth rock foundations more than 1,000 miles.
Space & Earth / Earth Sciences
Jul 12, 2011 |
5 / 5 (2) |
0
|
