| Similar Articles |
|---|
 |
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
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
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. |
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. |
Geotimes
September 2006
Lisa Rossbacher |
Big Lonesome Mountain What makes Gros Morne National Park so special is that its stories match the experience each visitor brings. The more geology you know, the more you will see and the richer the visit will be, but the geology meets all visitors at their own level. |
Geotimes
October 2006
Carolyn Gramling |
Flexing Plates Produce Volcanoes There's a new kind of volcano in town, according to a new study. |
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. |
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
November 2006
Carolyn Gramling |
Airing Out an Early Atmosphere Scientists have generally thought that oxygen was scarce in Earth's atmosphere until about 2.4 billion years ago. Now a study based on new evidence suggests that oxygen may actually have been around longer than previously thought. |
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. |
Geotimes
November 2003
Sara Pratt |
Tracing the Navajo sandstone The thick Navajo sandstone in Zion National Park is one of the largest wind-deposited formations in the geologic record. Geologists have devised a new way to determine the origin of such sedimentary rocks. |
Geotimes
May 2007
Kathryn Hansen |
Deep Earth May Hold an Ocean Earth's deep interior, more than 1,000 kilometers below the surface in the mantle, could prove to be a watery place. That's the conclusion researchers drew from an anomaly uncovered by the first global map of Earth's lower mantle, using a new type of seismic analysis. |
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. |
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
November 2007
Kathryn Watts |
Yellowstone and Heise: Supervolcanoes That Lighten Up Beneath Yellowstone, and driving many of its beloved features such as the geyser Old Faithful, lies a churning chamber of magma that has erupted before and may erupt again. |
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 |
Chemistry World
October 20, 2015
Emma Stoye |
Ancient graphite may push start of life back by 300 million years Life on earth may have begun millions of years earlier than previously thought, claim researchers who have measured the carbon isotopes of graphite preserved in a 4.1 billion-year-old mineral. |
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
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
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. |
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. |
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
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. |
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
July 2004
Sara Pratt |
Core Compositions Scientists are working to explain the differences in composition between Earth and Mars. |
