Sentences with phrase «into subduction zones»

Instead, the new finding adds evidence that gravity pulling the plates into subduction zones may drag them across the globe.

And it's difficult not to learn about the Bay Area's geology when you journey into the Subduction Zone or save endangered species and natural habitats with online games before you visit the parks in person!

Not exact matches

These initial results provide fundamental insights into the behavior of rare, very large earthquakes that may aid in preparation and early warning efforts for future tsunamis following subduction zone earthquakes.

Three basic forces are believed to drive oceanic plate movement: plates are «pushed» away from mid-ocean ridges as new sea floor forms; plates are «pulled» as the oldest parts of the plate dive back into the earth at subduction zones; and convection within the asthenosphere helps ferry the plates along.

The pressure difference could be caused by hot, partially molten rock piled up beneath mid-ocean ridges or beneath the cooling plates diving into the earth at subduction zones, the authors write.

Many of the islands sit above a subduction zone, where two plates meet and one slides haltingly under the other, down into the Earth's mantle.

«This ocean drilling expedition will for the first time drill scientific boreholes within the sediments entering this subduction zone, including the layer of sediment that eventually develops into the earthquake - generating fault,» Professor Henstock explained.

The Earth's lithosphere is divided into several plates that are in constant motion, and today's geologists have a good understanding of what drives these plate movements: heavier ocean plates are submerged beneath lighter continental plates along what are known as subduction zones.

In fact, lava emerging from hotspot volcanoes is known to differ chemically and isotopically from lava from other volcanoes, such as those erupting at subduction zones where Earth's crust dives into the upper mantle.

In these regions of «flat - slab» subduction, the Nazca plate moves horizontally for several hundred kilometers before continuing its descent into the mantle, and is shadowed by an extended zone of crustal seismicity in the overlying South America plate.

The Sea of Okhotsk earthquake may have involved re-rupture of a fault in the plate produced when the oceanic plate bent down into the Kuril - Kamchatka subduction zone as it began to sink.

With these plate tectonic reconstructions Schellart was able to predict where the fossil subduction zone was during its lifetime some 50 - 70 million years ago, and therefore where the lithospheric slab disappeared into the mantle.

At subduction zones such as these, an oceanic tectonic plate sinks (subducts) into the Earth's interior, the mantle.

Scientists have long thought diamonds could form in subduction zones, where one tectonic plate plunges under another and sinks hundreds of kilometers into the mantle.

There it will seek out new species and habitats; it may also study subduction zones, where oceanic crust is recycled back into the earth's mantle.

The Cascadia Subduction Zone runs from northern California to British Columbia, and scientists say it can be roughly divided into four segments.

In a subduction zone, a heavy oceanic plate meets a second, lighter continental plate and moves under it and into the earth's mantle.

Such a fracture, says Duarte, is evidence of an «embryonic subduction zone,» where a new edge is formed, then forced under the remainder of the plate, into the Earth's molten mantle.

Kattenhorn and Prockter saw ice volcanoes on the overriding plate, possibly formed through melting and absorption of the slab as it dove below the surface, and a lack of mountains at the subduction zone, implying material was pushed into the interior rather than crumpled up as the two plates mashed against each other.

«That tells us that most of this plume is primordial material and there are other materials hosted inside of this plume with low Helium - 3, -4, and these are likely crustal materials sent into the mantle at ancient subduction zones.»

These trenches form along subduction zones where slabs of the ocean floor slide into the Earth.

This occurs mainly through subduction zones into the Earth's mantle, as carbonates.

And if tectonic subduction zones did not continually recycle some of that via andesic volcanoes back into the atmosphere for photosynthesis, you and everything else on Earth would already be long dead of starvation.

And it is a good thing that humans recycle fossil fuels and subduction zones recycle carbonates into andesic volcanos.

Some millions of years from now, that subduction zone (along with others acting to assemble the next supercontinent) will start pushing CO2 levels back up into the range that has prevailed for most of the latter Phanerozoic.

Olgun, N. et al. (2011) Surface ocean iron fertilization: The role of airborne volcanic ash from subduction zone and hot spot volcanoes and related iron flues into the Pacific Ocean.