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Fluid Processes in Subduction Zones
Science, 1990Fluids play a critical role in subduction zones and arc magmatism. At shallow levels in subduction zones (<40 kilometers depth), expulsion of large volumes of pore waters and CH 4 -H 2 O fluids produced by diagenetic and low-grade metamorphic reactions affect the thermal and rheological ...
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2015
In this chapter, we review recent seismic tomography studies of subduction zones and new insights into arc magmatism, seismotectonics and subduction dynamics. Seismic velocity and attenuation tomography clearly reveals subducting slabs as high-velocity and low-attenuation zones, where intermediate-depth and deep earthquakes occur.
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In this chapter, we review recent seismic tomography studies of subduction zones and new insights into arc magmatism, seismotectonics and subduction dynamics. Seismic velocity and attenuation tomography clearly reveals subducting slabs as high-velocity and low-attenuation zones, where intermediate-depth and deep earthquakes occur.
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2004
Lay people asked to name notable or particularly dangerous volcanoes are likely to come forth with names such as Krakatau, Mt. St. Helens, Pinatubo, Mt. Pelee, Vesuvius or Santorini. These are all volcanoes that have grown above subduction zones, and all have produced catastrophic or at least highly explosive eruptions.
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Lay people asked to name notable or particularly dangerous volcanoes are likely to come forth with names such as Krakatau, Mt. St. Helens, Pinatubo, Mt. Pelee, Vesuvius or Santorini. These are all volcanoes that have grown above subduction zones, and all have produced catastrophic or at least highly explosive eruptions.
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Foredeeps versus subduction zones
Geology, 1994The geologic characteristics of foredeeps and accretionary wedges suggest that these features are distinguishable on the basis of the direction of the associated subduction. East-north-east-dipping subduction-related accretionary wedges show high relief and broad outcrops of metamorphic rocks.
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One-step conversion of crude oil to light olefins using a multi-zone reactor
Nature Catalysis, 2021Mohammad Al Abdullah +2 more
exaly
Intra-oceanic Subduction Zones
2011Modern intra-oceanic subduction zones comprise around 17,000 km (~40%) of the convergent margins of the Earth and are subjects of intense cross-disciplinary studies that are reviewed in this chapter. Most of these subduction zones exhibit trench retreat, do not accrete sediments and are affected by back-arc extension processes.
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Metamorphism in subduction zones
1990Subduction zones are associated with the greatest disturbances to the flow of heat from the interior of the Earth. They are also the sites of large departures from isostatic equilibrium in the lithosphere, particularly in the regions where oceanic plates bend to begin their descent into the Earth’s mantle.
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