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Geotimes July 2006 Carolyn Gramling |
Afar From Close-up Powerful stresses in the crust lead to frequent earthquakes and volcanism in the Afar Depression of northeastern Ethiopia. Researchers now say that the source of this activity reveals a possible new connection in Earth's interior. |
Geotimes November 2003 Naomi Lubick |
Turkish tectonics Researchers recently published preliminary results of the first data collected with modern techniques documenting the tectonic and seismic regimes of eastern Turkey. Their work may overturn conceptions of the tectonic setting of the region. |
Geotimes February 2004 Naomi Lubick |
Pursuing plumes Geophysicists recently presented improved methods for imaging mantle plumes, providing the strongest evidence yet that some plumes extend all the way down to the coremantle boundary. |
Geotimes July 2007 Carolyn Gramling |
X-ray Eyes in the Sky Scientists are working on the next generation of low-orbiting satellites that they hope will see far past the Earth's surface and into its interior, to better understand the structure and composition of Earth's crust, mantle and core. |
Geotimes July 2006 Carolyn Gramling |
Earth Soaks up Seawater Geologists have long thought that seawater does not travel very far through Earth's interior A new geochemical study, however, is challenging that notion, saying that traces of seawater exist deep inside the planet. |
Geotimes June 2005 Naomi Lubick |
Double-Crossing the Core A team of scientists has taken the properties of a mineral from the Earth's lower mantle, together with seismic observations of the core-mantle boundary, to propose a new model that could elucidate the heat engine that drives Earth. |
Geotimes November 2005 Sara Pratt |
Super-Rotation for Earth's Core A new earthquake study supports the 1996 finding that Earth's inner core is spinning faster than the planet's mantle and crust -- at a rate detectable on human timescales, but about one-third of the rate first suggested. |
Geotimes April 2007 Nicole Branan |
Found: Tibet's Missing Anchor Through new seismic work, researchers may have found a clue to why the Tibetan Plateau is as high as it is. A chunk of upper mantle that's been "missing" for some 15 million years may have contributed to the region's uplift, they say. |
Geotimes April 2007 Kathryn Hansen |
Ocean Waves Drive Earth's Hum High-energy near-shore waves are the main source of energy for the constant seismic background noise known as Earth's "hum." |
Chemistry World July 22, 2011 David Bradley |
Cracking diamonds reveals continental origins An analysis of the mineral inclusions in diamonds dredged up by eruptions from deep within the Earth has allowed scientists to get a handle on when the process of plate tectonics began. |
Chemistry World March 13, 2014 Emma Stoye |
Piece of Earth's interior 'ocean' found in diamond A tiny crystal found in a diamond has confirmed predictions about a giant store of water deep in the Earth's mantle. |
Geotimes January 2007 Nicole Branan |
Heat Flow Causes Magnetic Reversals Earth's magnetic field has done hundreds of somersaults over the last few billion years. A new study sheds some light on what causes the geomagnetic field to flip. |
Geotimes July 2004 Sara Pratt |
Core Compositions Scientists are working to explain the differences in composition between Earth and Mars. |
Geotimes November 2005 Naomi Lubick |
Bolivian Earthquake Strikes Deep A magnitude-6.9 earthquake rumbled through Bolivia and northern Chile yesterday. No immediate deaths or damage were reported, although people evacuated their homes. |
Geotimes November 2007 Carolyn Gramling |
How Does Your Continent Grow? Data from ancient mantle rocks are helping to shore up the hypothesis that the continental crust was extracted in pulses, during periodic large melting events in the mantle. |
Chemistry World October 11, 2012 Andy Extance |
Perovskite posits answer to xenon riddle If meteorites and the Earth were formed from similar materials at the same time, where did the xenon go? Some scientists think that the answer could be found in xenon trapped in the Earth's iron core, or in ice, water or rocks near the surface. |
Geotimes September 2007 Elizabeth Quill |
Earth's Heat Buoys up Its Crust New research suggests that without the heat in Earth's crust and upper mantle creating elevation, much of North America would be underwater. |
Chemistry World July 30, 2009 James Urquhart |
Water linked to mantle oxidation US scientists have used an emerging technique to analyse minuscule samples of magma derived from the Earth's mantle in different tectonic environments and discovered a direct link between water content and the oxidation state of iron within the sample. |
Geotimes September 2007 Nicole Branan |
Understanding the Crust Beneath Iran The most recent continent-continent collision on Earth began about 10 to 20 million years ago when the Arabian Plate slammed into Eurasia in what is modern-day Iran. An international team of researchers has brought to light an important piece of this ancient history. |
Smithsonian December 2006 Cate Lineberry |
Diamonds Unearthed In the first installment of a multi-part series, Smithsonian diamond expert Jeffrey Post, curator of the National Gem and Mineral Collection, explains how the rare crystals form. |
Chemistry World April 6, 2011 Mike Brown |
Mars chemistry reveals how red planet cooled The chemistry of volcanic rock on Mars offers a picture of the thermal history of the planet, according to scientists in France. The findings could provide a reference point for the evolution of other planets, they say. |
Popular Mechanics October 11, 2006 Alex Hutchinson |
Nuke Watch: How Scientists Sniffed Out N. Korea This timely exclusive looks at nuclear detection technology and finds out just how tough it is to hide a weapons blast. |
Geotimes September 2006 Carolyn Gramling |
Donald Forsyth: At Play in the Field Forsyth emphasizes that collaborating with students and other researchers is not only important to solving tough geological puzzles, but also is much of the fun. |
National Defense September 2010 Grace V. Jean |
Scientists Say They Are Closer Than Ever to Predicting Earthquakes Researchers have discovered that there are warning signs that can be detected in the weeks and hours prior to temblors. |
Chemistry World May 11, 2006 Jon Evans |
Sea Water Assumes the Xenon Mantle Geochemists have uncovered evidence that sea water incorporates noble gases into the Earth's mantle, overturning current theories of how noble gases are transported beneath the crust. |
Geotimes July 2003 Lisa M. Pinsker |
Challenging core ideas Earth's core has never been so popular -- first plastered over billboards to advertise the recent movie The Core, and now in press worldwide discussing David Stevenson's "modest proposal" to send a grapefruit-sized probe thousands of kilometers into the planet's mysterious core. |
IEEE Spectrum April 2008 John Boyd |
Electromagnetic Link Deep in the Earth Varies the Length of the Day Scientists find that 2600 kilometers down, the Earth is electrically conductive. The mineral responsible could point the way to new superconductors. |
Geotimes September 2005 Sara Pratt |
Sourcing Ultradeep Diamonds Mineral impurities in a diamond may decrease the gem's value for jewelers, but for geologists they can prove to be priceless: South African diamonds containing garnet have recently provided evidence that very deep diamonds can form from surface materials. |
Geotimes September 2005 Naomi Lubick |
Repositioning Tokyo's Fault Seismologists now think Tokyo's fault sits closer to Earth's surface than previously thought. If the fault is indeed shallower, the new assessment has the potential to revise the projected hazards Tokyo may face in the future. |
Geotimes December 2003 Naomi Lubick |
Glacial earthquakes Seismologists have fingered glaciers as one source of newly discovered "slow" earthquakes. |
Geotimes September 2003 Sara Pratt |
Zircons reveal mantle evolution A team of Finnish geologists has discovered 3.1 billion-year-old zircons in the Jormua ophiolite of eastern Finland. Although not the oldest zircons on Earth, the Jormua zircons are the oldest yet found in mantle rocks. Their discovery has given scientists a brief glimpse into the history of early plate tectonics. |
Geotimes March 2007 Carolyn Gramling |
New Madrid Fault Dying? A series of devastating earthquakes that altered the course of the Mississippi River in the early 19th century may have been among the last gasps of an old, dying fault system, a controversial new study suggests. |
Geotimes June 2007 Hansen & Gramling |
Are Volcanoes Picky Eaters? New measurements of the concentrations of elements within magma suggest a volcano's food may be a complex recipe -- and that what kind of magma a volcano prefers may affect its physical features, including the size to which it can grow, according to new research |
Geotimes November 2004 Jay Chapman |
Taking the Fossil Out of Fuels New research is expanding the range of the formation of fossil fuels. |
Science News March 17, 2001 |
TimeLine: March 14, 1931 70 Years Ago in Science News: New Welded Pipe Line Carries Water to San Diego... Age of Earth Determined as Over 2,000,000,000 Years... Moon Lacks Oxygen, Its Light Proves... |
Geotimes October 2006 Carolyn Gramling |
Flexing Plates Produce Volcanoes There's a new kind of volcano in town, according to a new study. |
Chemistry World December 4, 2013 James Urquhart |
Diamonds' redox reaction origins revealed Subduction zones -- boundaries between tectonic plates where the Earth's crust sinks into the hot mantle -- could be breeding grounds for diamond formation, according to Russian researchers. |
Geotimes August 2007 Carolyn Gramling |
Earth's Core is Solid, After All Seismic waves passing through Earth's center have long puzzled researchers, as some waves travel fast enough to indicate that Earth's inner core is solid iron-nickel crystals, but they do not travel quite as quickly as scientists would expect, based on studies of stiff iron alloys. |
Chemistry World May 28, 2014 Ian Randall |
Earth's earliest continent formed like Iceland The Earth's first continents may have formed in a geological setting similar to modern-day Iceland, according to the geochemical analysis of a newly discovered rock unit from Canada. |
Chemistry World May 13, 2014 Tim Wogan |
Chemistry calculations reveal Earth's inner core Theoretical calculations have confirmed that the Earth's core contains a significant proportion of oxygen. |
Geotimes May 2007 Carolyn Gramling |
Slow Earthquakes, Tiny Tremors Small earthquakes and tiny tremors originating deep in fault zones are the result of slow earthquakes at Earth's surface, according to a new study. |
Geotimes November 2004 Naomi Lubick |
Detecting Marine Gas Hydrates To better find large enough deposits to extract, scientists are working to improve seismic profiling techniques and other tools for better mapping of gas hydrates. |
IEEE Spectrum November 2006 Kieron Murphy |
Q&A: Paul G. Richards, Nuclear Arms Seismologist An interview with the Mellon Professor of the Natural Sciences at Lamont-Doherty Earth Observatory of Columbia University on the science of detecting and measuring nuclear weapons test explosions. |
Geotimes October 2003 |
Geomedia Book Review: Krakatoa... DVD: Revisiting The Core... Maps: Annotated list of references for geologic mapping in Iraq... etc. |
Geotimes April 2003 Christina Reed |
Watching The Core: A movie review Geotimes went to the movies with four geophysicists from the Carnegie Institution of Washington to see the new blockbuster movie The Core. With Hollywood blaming its newest apocalypse on Earth's core, we couldn't resist. |
Geotimes July 2004 |
Joining the Academy The National Academy of Sciences (NAS) elected six geoscientists to join its membership this year, one of the highest honors in the scientific community. From surface to core, the new members are a diverse group. |
Geotimes November 2005 Naomi Lubick |
Shift in Chile's Seismic History New research documenting tsunami deposits in the Nazca plate region is resetting the seismic clock. |
IEEE Spectrum August 2006 Stephen Cass |
Summer Reading Hollow Earth: The Long and Curious History of Imagining Strange Lands, Fantastical Creatures, Advanced Civilizations, and Marvelous Machines Below the Earth's Surface by David Standish... Kids to Space: A Space Traveler's Guide by Lonnie Jones Schorer... etc. |
Geotimes December 2004 Lisa M. Pinsker |
A Passive Approach to Healthy Oil Production A technology first used to help with mine safety has evolved into a tool for the oil and gas industry, with potential in application for sequestering carbon. |
Scientific American March 2005 Madhusree Mukerjee |
The Scarred Earth Tsunami-spawning quake leaves geophysical changes. |