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| July 03, 2009 |
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our time will build eternity |
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What Goes Down, Must Come Up: Earth's Leaky Mantle Houston TX (SPX) Jun 05, 2009 
A new analysis of the processes that constantly stir the Earth's deep mantle is helping to explain how the mantle holds onto a portion of ancient noble gases that were trapped during the Earth's formation. The research, which appears this week in the journal Nature, takes aim at a question that has vexed geoscientists for years: how to reconcile leading theories about the convection of ... read moreA Hidden Drip, Drip, Drip Beneath Earth's Surface 
Tempe AZ (SPX) May 28, 2009There are very few places in the world where dynamic activity taking place beneath Earth's surface goes undetected. Volcanoes, earthquakes, and even the sudden uplifting or sinking of the ground are all visible results of restlessness far below, but according to research by Arizona State University (ASU) seismologists, dynamic activity deep beneath us isn't always expressed on the surface. ... more
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Andes Mountains Are Older Than Previously Believed
Panama, Panama (SPX) May 19, 2009The geologic faults responsible for the rise of the eastern Andes mountains in Colombia became active 25 million years ago-18 million years before the previously accepted start date for the Andes' rise, according to researchers at the Smithsonian Tropical Research Institute in Panama, the University of Potsdam in Germany and Ecopetrol in Colombia. "No one had ever dated mountain-building ... more Technique Measures Heat Transport In The Earth's Crust 
St. Louis MO (SPX) Apr 04, 2009Putting a new spin on an old technique, Anne M. Hofmeister, Ph.D., research professor of earth and planetary sciences in Arts and Sciences at Washington University in St. Louis, has revolutionized scientists' understanding of heat transport in the Earth's crust, the outermost solid shell of our planet. Temperature is an important driver of many geological processes, including the generatio ... more Scientists Cable Seafloor Seismometer Into State Earthquake Network 
Berkeley CA (SPX) Mar 31, 2009A newly laid, 32-mile underwater cable finally links the state's only seafloor seismic station with the University of California, Berkeley's seismic network, merging real-time data from west of the San Andreas fault with data from 31 other land stations sprinkled around Northern and Central California. Laying of the MARS (Monterey Accelerated Research System) fiber-optic cable was complete ... more Earth's Crust Melts Easier Than Thought 
Washington DC (SPX) Mar 26, 2009Earth's crust melts easier than previously thought, scientists have discovered. In a paper published in this week's issue of the journal Nature, geologists report results of a study of how well rocks conduct heat at different temperatures. They found that as rocks get hotter in Earth's crust, they become better insulators and poorer conductors. The findings provide insights into how ... more |
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Locations Of Strain, Slip Identified In Major Earthquake Fault
Chicago IL (SPX) Feb 19, 2009Deep-sea drilling into one of the most active earthquake zones on the planet is providing the first direct look at the geophysical fault properties underlying some of the world's largest earthquakes and tsunamis. The Nankai Trough Seismogenic Zone Experiment (NanTroSEIZE) is the first geologic study of the underwater subduction zone faults that give rise to the massive earthquakes known to ... more Research Links Seismic Slip And Tremor 
Seattle WA (SPX) Feb 05, 2009In the last decade, scientists have recorded regular episodes of tectonic plates slowly, quietly slipping past each other in western Washington and British Columbia over periods of two weeks or more, releasing as much energy as a magnitude 6 earthquake. The slip events coincide with regular occurrences of what scientists call nonvolcanic tremor, which showed up clearly on seismometers but ... more Fossil Earthquakes Abundant 
Washington DC (SPX) Feb 03, 2009Rocks formed only under the extreme heat and friction during earthquakes, called pseudotachylytes, may be more abundant than previously reported, according to new research focused on eight faults found in the Sierra Nevada. The research appears in the February issue of the Bulletin of the Seismological Society of America. Geologists have previously debated whether these rocks are rarely ... more Early Warning Systems Underestimate Magnitude Of Large Earthquakes 
Washington DC (SPX) Feb 03, 2009Scientists seek to create reliable early warning systems that accurately estimate the magnitude of an earthquake within the first seconds of rupture. In this paper published by the Bulletin of the Seismological Society of America, authors S. Murphy of University College Dublin, Ireland and S. Nielsen of the Instituto Nazionale di Geofisica e Vulcanologia, Roma, Italy look at the idea that an ... more |
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