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Latest Island arc Stories

'Caldas Tear' Resolves Seismic Activity Beneath Colombia
2013-06-06 20:49:15

Seismological Society of America Colombia sits atop a complex geological area where three tectonic plates are interacting, producing seismicity patterns that have puzzled seismologists for years. Now seismologists have identified the "Caldas tear," which is a break in a slab that separates two subducting plates and accounts for curious features, including a "nest" of seismic activity beneath east-central Colombia and high grade mineral deposits on the surface. In a paper published in...

New Insights Into The Strength Of Continents
2012-08-21 11:11:47

April Flowers for redOrbit.com - Your Universe Online Over the last 50 million years, the Caribbean islands have been pushed east, driven by the movement of the Earth's viscous mantel against the more rooted South American continent. A new study by University of Southern California (USC) geophysicists, published in Nature Geoscience, gives us a better understanding of how continents resist the constant movement of the Earth's plates and what effect the continental plates have in...

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2008-04-03 08:55:00

Discovery means other sites such as the Cascadia Subduction Zone in northwestern North America have potential for more severe earthquakes than once thoughtOn the one year anniversary of a devastating earthquake and tsunami in the Solomon Islands that killed 52 people and displaced more than 6,000, scientists are revising their understanding of the potential for similar giant earthquakes in other parts of the globe.Geoscientists from The University of Texas at Austin's Jackson School of...


Word of the Day
malpais
  • The ragged surface of a lava-flow.
'Malpais' translates from Spanish as 'bad land.'