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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
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
January 2005
Naomi Lubick |
Horses' Mouths Date Sierra Nevada Uplift Estimates on when the Sierra Nevada began its major uplift vary widely. In an effort to pinpoint the escalation, some geoscientists are going straight to the horse's mouth, literally, using horse teeth to date the mountains' uplift. |
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
August 2004
Megan Sever |
Tahoe quakes: business as usual? Scientists say they have figured out what caused two major events that shook the Sierra Nevada region in recent months. |
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 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
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
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. |
BusinessWeek
June 5, 2006
Mara Der Hovanesian |
Sierra Looks Ripe For The Picking Health-Maintenance Organization stocks, down 37% this year, are set to become prime takeover targets. |
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. |
Adventure
February 2005 |
Who's Stealing the Sierra's Summit Registers Photos of some of the stolen Sierra Nevada summit registers as well as speculation about the thefts. |
Geotimes
September 2007
Erin Wayman |
Icebergs Help Fertilize the Ocean Floating icebergs may enhance marine life. New research shows that concentrations of phytoplankton, krill and seabirds are higher near icebergs. |
