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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 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. |
Geotimes November 2006 Kathryn Hansen |
Canada's Diamonds Face Old Age Geologists are uncovering the unique origins of Canadian diamonds, and finding not only that they are surprisingly old, but also that they have implications for the timing of Earth's early tectonic processes. |
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. |
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 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. |
Geotimes August 2006 Kathryn Hansen |
Unlocking Jade's Secrets Although recent expeditions to Guatemala turned up jade's geologic source -- deep inside a fault -- only now have scientists begun to unlock the clues inside the stone that provide a rare look at conditions deep inside Earth. |
Chemistry World February 13, 2014 Simon Poulton |
The Earth as a cradle for life This enjoyable book by Stacey and Hodgkinson takes a long-term view of Earth's development as a habitable planet, incorporating physical, chemical and biological processes on the early Earth, to the modern world. |
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. |
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 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. |
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. |
Popular Mechanics February 15, 2009 Karen Rowan |
Predicting Earthquakes: Scientists Use Satellites and Drills to Follow a Force of Nature The awesome energy unleashed by earthquakes is something geologists still struggle to understand. To gather information on how the Earth moves, scientists use drills and GPS satellites. |
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 March 2005 Sara Pratt |
Rocky Debate Over Early Life Scientists fail to replicate a 1996 study on 3.85-billion-year-old rocks that pushed back the date of the earliest evidence for life on Earth by several hundred million years. |
Geotimes October 2004 Katie Donnelly |
Petrology and Politics This scientist is preparing for her upcoming work in Washington, D.C., as the 2004-2005 Congressional Science Fellow for the American Geological Institute. |
HHMI Bulletin Winter 2013 Nicole Kresge |
The Past, Present, and Future Earth What does the 4.6 billion year history of Earth tell us about our modern planet? About 150 Washington, D.C., area high school students and 15 teachers from around the United States learned the answers to these questions at the 2012 HHMI Holiday Lectures on Science. |
Geotimes January 2004 Megan Sever |
Climate aids mountain building Two geoscientists now hypothesize that the link between climate and mountain building in the Andes is a two-way street. |
Geotimes June 2005 |
Geomedia Selling Extreme Life on the Extreme Screen... Books: Earth: An Intimate History... On the Shelf: Climate Change Picks from Kim Stanley Robinson... Maps: New View of North America... etc. |
Geotimes May 2003 Lisa M. Pinsker |
Molten martian core The more researchers study Mars, the more similarities they seem to find between the Red Planet and Earth. The latest parallels come from the planet's enigmatic interior. |
Geotimes March 2005 Sara Pratt |
Quake Uplifted Japan A large 17th-century earthquake comparable in size to the Dec. 26 Sumatra quake was responsible for pushing up land in Japan, according to new research based on the sediment record of a large tsunami. |
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 April 2006 Kathryn Hansen |
Deep Sediments, Strong Quakes The surprising strength of the earthquake that triggered the 2004 Sumatran tsunami urged seismologists to discover triggers that lead up to these events. New models show responsibility may rest on sediments than can collect kilometers deep at the junctions of tectonic plates. |
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. |
Geotimes June 2006 Megan Sever |
Plate Shifts in the Pacific Northwest The far northern section of the Sumatra-style subduction zone in the Pacific Northwest could be transforming into more of a San Andreas-style seismic zone, according to new research. This geologic reorganization could have implications for the region's earthquake risk. |
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. |
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 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. |
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 March 2004 |
New language for geologic time The Stratigraphy Commission of the Geological Society of London (GSL) is calling for a drastic and controversial overhaul of the Stratigraphic Guide, the internationally agreed upon standards for the field of stratigraphy. |
Geotimes January 2004 Cynthia Martinez |
Earth Science Week in the Limelight The sixth annual Earth Science Week, held Oct. 12-18, promoted understanding and appreciation of the value of earth science research and its applications and relevance to our daily lives. |
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 August 2003 Christina Reed |
Making mountains from a molehill Jason Saleeby of Caltech says the Laramide Slab owes its uniqueness to having carried a plateau from the distant seafloor, which helps explain why the shallow oceanic slab sheared off a segment of western North America's continental lithosphere. |
Geotimes November 2005 Naomi Lubick |
Large Quake, Small Tsunami for Japan A large earthquake several hundred kilometers offshore Japan triggered a tsunami warning and a subsequent small tsunami. Three or four large events have occurred on this subduction fault over the past several centuries, as the Pacific plate slowly presses westward under Japan. |
Geotimes March 2005 Laura Stafford |
Sumatra Seismic Risk Recent research indicates that Indonesia, as well as other regions like the Caribbean, could experience more earthquake and tsunami activity in the near future. |