Daily non-political popular news in brief.
Evidence from Hawaiian volcanoes shows that Earth recycles its crust
11-29-2006 · EurekAlert!Rutgers University geological sciences professor Claude Herzberg offers new evidence that parts of the Earth's crust that long ago dove hundreds or thousands of kilometers into the Earth's interior have resurfaced in the hot lava flow of Hawaiian volcanoes. Writing in Nature, Herzberg claims to have found telltale chemical evidence at Mauna Kea that pieces of this submerged crust have been forced up through plumes and now make up most of this volcano's lava flow.
Read more »
Keywords: evidence, hawaiian, volcanoes, shows, earth, recycles, crust, volcanoe, show, recycle
« Previous | Next »
Similar news on "Evidence from Hawaiian volcanoes shows that Earth recycles its crust":
- Young and Restless: Ancient Earth shows moving crust
03-24-2007 · Science News Online
The oldest rocks in the world show that Earth's shifting crust began its tectonic movements almost 4 billion years ago.
Similar news · Read more »
- New, hands-on science demos teach young students how volcanoes 'blow their tops,' spew lava
10-24-2006 · EurekAlert!
Geologists at Rutgers University have created three hands-on demonstrations that show how heat and pressure underground move rocks and earth to build up volcanic mountains, and in some cases, cause them to literally blow their tops. These activities, which depict the actual forces that caused Washington's Mt. St. Helens to blow or Hawaii's Kilauea to spew red-hot rivers of lava, captivate kids while giving them a foundation for studying earth science in high school.
Similar news · Read more »
- Researchers find origin of 'breathable' atmosphere half a billion years ago
10-28-2007 · EurekAlert!
Ohio State University geologists and their colleagues have uncovered evidence of when Earth may have first supported an oxygen-rich atmosphere similar to the one we breathe today. The study suggests that upheavals in the earth's crust initiated a kind of reverse-greenhouse effect 500 million years ago that cooled the world's oceans, spawned giant plankton blooms and sent a burst of oxygen into the atmosphere.
Similar news · Read more »
- Model shows big body of water in Earth's mantle
02-11-2007 · EurekAlert!
Michael E. Wysession, Ph.D., Washington University professor of earth and planetary sciences in Arts & Sciences has made the first 3-D model of seismic wave damping -- diminishing -- deep in the Earth's mantle and has revealed the existence of an underground water reservoir at least the volume of the Arctic Ocean. It is the first evidence for water existing in the Earth's deep mantle.
Similar news · Read more »
- NASA data show earthquakes may quickly boost regional volcanoes
04-10-2007 · EurekAlert!
Scientists using NASA satellite data have found strong evidence that a major earthquake can lead to a nearly immediate increase in regional volcanic activity.
Similar news · Read more »
- Jefferson oncologists show breast cancers to be more aggressive in African-American women
07-09-2007 · EurekAlert!
A study of more than 2,200 women shows that African-Americans have more advanced breast cancer at the time of diagnosis than Caucasians. African-American women tend to have breast cancer tumor types that are more aggressive and have poorer prognoses. The findings are in line with other recent studies, and provide more evidence of the continuing need for early breast cancer screening for African-American women and the development of individual treatment strategies.
Similar news · Read more »
- AGU Journal Highlights -- May 3, 2007
05-03-2007 · EurekAlert!
In this issue: Warming oceans may diminish length of day, Seasonal variations in the seismicity of the Himalayan Mountains, Lead in old Antarctic ice, Reorientations of crystal lattice may explain deep Earth’s seismic jumps, Improved modeling of permafrost dynamics in global climate models, New model shows how layering facilitates rock deformation, Hydrothermal systems may foment periodic unrest at caldera volcanoes, Fluid pore pressures in debris flows, Arctic sea ice vanishing faster than models forecast
Similar news · Read more »
- Scientists find that Earth and Mars are different to the core
06-28-2007 · EurekAlert!
Research comparing silicon samples from Earth, meteorites and planetary materials, published in Nature (June 28, 2007) provides new evidence that the Earth's core formed under very different conditions from those that existed on Mars. It also shows that the Earth and the moon have the same silicon isotopic composition, supporting the theory that atoms from the two mixed in the early stages of their development.
Similar news · Read more »
- Scripps/UCSD geophysicist among international team finding evidence of first plate tectonics
03-22-2007 · EurekAlert!
Identification of the oldest preserved pieces of Earth's crust in southern Greenland has provided evidence of active plate tectonics as early as 3.8 billion years ago, according to a report by an international team of geoscientists in the March 23 edition of Science magazine.
Similar news · Read more »
- Astronomers get first look at Uranus's rings as they swing edge-on to Earth
08-23-2007 · EurekAlert!
An edge-on view of Uranus' rings, possible only once every 42 years, shows that the dust distribution has changed significantly since Voyager 2 took photos in 1986. Keck and Hubble observations show the inner rings more clearly as the bright outer rings dim, and may discover new moons that shepherd the ring debris.
Similar news · Read more »
