Toamasina
Toamasina , formerly Tamatave , city (1993 pop. 127,441), NE Madagascar. Situated on the Indian Ocean, it is the nation's chief port and is connected by rail with Antananarivo. Toamasina exports sugar, coffee, cloves, and rice. Food processing is the chief industry. The town was founded in the 18th cent. around a European trading post. After its capture (1817) by Radama I, it became the chief port of his kingdom. Toamasina was occupied repeatedly by the French, and it was the base for their conquest (1894) of the interior. Severely damaged (1927) by a storm, the city was subsequently rebuilt.
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SEDIMENT COULD BE MAJOR FACTOR IN BIGGEST SUBDUCTION ZONE EARTHQUAKES
News Wire article from: US Fed News Service, Including US State News; 1/30/2006; 700+ words
; ...dives beneath the other. But not all subduction zones are created equal, and University...they have found a key to determine which subduction zones - or which specific areas within a subduction zone - might produce the most severe shaking...
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Finding fault: trace of old subduction zone found in Italy.(This Week)
Magazine article from: Science News; 2/9/2008; ; 700+ words
; ...ancient subduction zone occurred at depths...notes, because modern subduction zones don't exhibit seismic...samples from active subduction zones. Remitti and her...samples of an actual subduction zone to study in real detail...
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Geophysicist calls for considering all subduction zones as potential tsunami threats
News Wire article from: The Hindustan Times; 3/24/2007; 653 words
; ...occur at subduction zone, and can be created...the temperature of subduction zones, indicating that temperature...considerations place the Andaman subduction zone in the high-magnitude...characterizes some subduction zones as being incapable...
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Fluid composition in subduction zones. (25 Years of Ocean rilling)
Magazine article from: Oceanus; 12/22/1993; ; 700+ words
; ...internally available fluid sources in subduction zones through steady-state...might be transported to the subduction zones is yet unknown. Geochemistry...importance to understanding subduction zone hydrogeochemistry. The only...
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Late Neoproterozoic proto-arc ocean crust in the Dariv Range, Western Mongolia: a supra-subduction zone end-member ophiolite
Magazine article from: Journal of the Geological Society; 3/1/2006; ; 700+ words
; ...special class of supra-subduction zone ophiolites. Ever since...ridges, or supra-subduction zone oceanic basement...defined supra-subduction zone ophiolite type, providing...tectonic collage of subduction complexes, island arcs...
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Catching subduction in the act. (new subduction zone forming in Pacific Ocean)
Magazine article from: Science News; 1/2/1988; ; 700+ words
; Catching subduction in the act As the Pacific plate inches...This recycling process, called subduction, has been going on for tens of millions...earliest stages in the birth of a subduction zone that will eventually form a trench...
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University of New Mexico and Scripps Institution of Oceanography Researchers Find Central American Volcanoes Yield New Clues About Earth Processes; 'Surprise' Finding Shows Nitrogen Is Quickly Recycled Through Subduction Zones.
News Wire article from: Ascribe Higher Education News Service; 8/15/2002; 700+ words
; ...show that in the Guatemalan subduction zone up to 95 percent of the nitrogen...where nitrogen travels during subduction, gives researchers a new glimpse...helium relationships in other subduction zones mainly found bordering the Pacific...
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Birth of a subduction zone.
Magazine article from: Science News; 12/16/1989; ; 693 words
; Birth of a subduction zone A massive earthquake that struck the...signaled the very early stages of subduction there -- the same process that long...ocean trenches around the Pacific. Subduction occurs when two crustal plates collide...
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 "The Register-Guard (Eugene, OR)")
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Old fault is a new potential threat.(City/Region)(A small earthquake could trigger a larger event in the Cascade Subduction Zone)
Newspaper article from: The Register-Guard (Eugene, OR); 8/27/2008; 700+ words
; ...Northern California, the Cascadia Subduction Zone is the earthquake fault that...from its neighbor, the Cascadia Subduction Zone. The Blanco's fault line...behave the same as Cascadia, a subduction zone where one plate slides beneath...
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The Romeral Fault System: a shear and deformed extinct subduction zone between oceanic and continental lithospheres in northwestern South America.
Magazine article from: Earth Sciences Research Journal; 6/1/2005; ; 700+ words
; ...metamorphism and some rocks of extinct subduction zone suffered metamorphic inversion. During...seismotectonic characterization of this zone was done. The deformed zone represents an extinct subduction zone including fore arc basin rocks with...
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subduction zones
Book article from: The Oxford Companion to the Earth
...which shows it as a zone characterized by high...surrounding mantle. Most subduction zones are marked at the...x2013;ocean subduction zones are slightly simpler...x2013;ocean subduction zone, although not all...
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Subduction Zone
Book article from: World of Earth Science
Subduction zone Subduction zones occur at collision boundaries where at least one of the colliding...plates move together and the resulting compression causes either subduction (where one or both lithospheric plates are driven down and destroyed...
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subduction zone
Book article from: A Dictionary of Earth Sciences
subduction zone The zone, at an angle to the...descends. Most present day subduction zones extend from trenches...floor, from where a zone of earthquake hypocentres...evidence of an ancient subduction zone and thus of a destructive...
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subduction
Book article from: A Dictionary of Earth Sciences
subduction The process of consumption of a lithospheric plate at convergent plate margins . See SUBDUCTION ZONE .
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A-subduction
Book article from: A Dictionary of Earth Sciences
A-subduction The movement of one continental lithospheric plate under another ( subduction ) in a collision zone , with the separation of part or...crust of the overriding plate. A-subduction, named after O. Ampferer, has...
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