News About Tectonic Forces 16-MAY-08 en-us Houston TX (SPX) May 14, 2008 - A new study of possible links between climate and geophysics on Earth and similar planets finds that prolonged heating of the atmosphere can shut down plate tectonics and cause a planet's crust to become locked in place.]]> ]]> Paris (AFP) May 12, 2008 - The violent quake that shook China's Sichuan province on Monday is linked to a shift of the Tibetan plateau to the north and east, specialists at the Paris Institute of Earth Physics told AFP.]]> Washington DC (SPX) Apr 29, 2008 - Geologists studying deposits of volcanic glass in the western United States have found that the central Sierra Nevada largely attained its present elevation 12 million years ago, roughly 8 or 9 million years earlier than commonly thought. The finding has implications not only for understanding the geologic history of the mountain range but for modeling ancient global climates.]]> San Francisco CA (SPX) Apr 07, 2008 - Seismic activity on the southern Cascadia Subduction fault may have triggered major earthquakes along the northern San Andreas Fault, according to new research published by the Bulletin of Seismological Society of America (BSSA). The research refines the recurrence rate for the southern portion of the Cascadia fault to approximately every 220 years for the last 3000 years.]]> ]]> Santa Cruz CA (SPX) Mar 25, 2008 - The vast Tibetan Plateau--the world's highest and largest plateau, bordered by the world's highest mountains--has long challenged geologists trying to understand how and when the region rose to such spectacular heights. New evidence from an eight-year study by U.S. and Chinese researchers indicates that the plateau rose in stages, with uplift occurring first in the central plateau and later in regions to the north and south.]]> London, UK (SPX) Feb 22, 2008 - The first direct evidence of how and when tectonic plates move into the deepest reaches of the Earth is published in Nature today. Scientists hope their description of how plates collide with one sliding below the other into the rocky mantle could potentially improve their ability to assess earthquake risks.]]> Washington DC (SPX) Feb 06, 2008 - The third expedition of the Integrated Ocean Drilling Program's Nankai Trough Seismogenic Zone Experiment (NanTroSEIZE) completed its mission off the Kii Peninsula. The expedition science party, 26 scientists representing 10 countries, set forth on Dec. 19, 2007, aboard the drilling vessel Chikyu, to evaluate the deformation, structural partitioning, and physical characteristics of the Nankai Trough fault zone.]]> ]]> Tucson AZ (SPX) Jan 23, 2008 - A newly identified fault that runs under the Adriatic Sea is actively building more of the famously beautiful Dalmatian Islands and Dinaride Mountains of Croatia, according to a new research report. Geologists had previously believed that the Dalmatian Islands and the Dinaride Mountains had stopped growing 20 to 30 million years ago.]]> Wood Holes MA (SPX) Jan 10, 2008 - The motion, formation, and recycling of Earth's crust-commonly known as plate tectonics-have long been thought to be continuous processes. But new research by geophysicists suggests that plate tectonic motions have occasionally stopped in Earth's geologic history, and may do so again. The findings could reshape our understanding of the history and evolution of the Earth's crust and continents.]]> New York NY (SPX) Jan 10, 2008 - Zigzagging some 60,000 kilometers across ocean floors, earth's system of mid-ocean ridges plays a pivotal role in many workings of the planet, from its plate-tectonic movements to heat flow from the interior, and the chemistry of rock, water and air. It was not until the late 1970s that scientists discovered the existence of vast plumbing systems under the ridges, which pull in cold water, superheat it, then spit it back out from seafloor vents-a process that brings up not only hot water, but dissolved substances taken from rocks below.]]> SOLAR  ENERGY  SOLUTIONS

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]]> ]]> Washington DC (SPX) Jan 04, 2008 - Plate tectonics, the geologic process responsible for creating the Earth's continents, mountain ranges, and ocean basins, may be an on-again, off-again affair. Scientists have assumed that the shifting of crustal plates has been slow but continuous over most of the Earth's history, but a new study from researchers at the Carnegie Institution suggests that plate tectonics may have ground to a halt at least once in our planet's history-and may do so again.]]> Washington (AFP) Dec 20, 2007 - A dark green, unusually soft layer of rock known as serpentine, which coats tectonic plates, plays a key role in the emergence of powerful earthquakes, a US-French study said Thursday.]]> Davis CA (SPX) Dec 20, 2007 - A new study adds to evidence that the fault responsible for the 1989 Loma Prieta earthquake is not as unusually weak as had been thought. In general, a "weak" fault is one that ruptures relatively easily, resulting in smaller but more frequent earthquakes, while a "strong" fault can accumulate more strain before breaking in larger shocks, said Robert Twiss, professor emeritus of geology at UC Davis and co-author of the study with Jeffrey Unruh of William Lettis and Associates of Walnut Creek, Calif.]]> Advertise in Terra Daily and reach thousands of industry, government and science readers the world over.

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