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  Boundary-layer mantle flow under the Dead Sea transform fault inferred from seismic anisotropy.

Rümpker, G., Ryberg, T., Bock, G., Desert Seismology Group (2003): Boundary-layer mantle flow under the Dead Sea transform fault inferred from seismic anisotropy. - Nature, 425, 6957, 497-501.
https://doi.org/10.1038/nature01982

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Rümpker, G.1, 2, Author
Ryberg, Trond2, 3, Author              
Bock, G.1, 2, Author
Desert Seismology Group1, 2, Author
2.4 Seismology, 2.0 Physics of the Earth, Departments, GFZ Publication Database, Deutsches GeoForschungsZentrum, Author              
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1Deutsches GeoForschungsZentrum, ou_persistent13              
2Publikationen aller GIPP-unterstützten Projekte, Deutsches GeoForschungsZentrum, Potsdam, ou_44021              
32.2 Geophysical Deep Sounding, 2.0 Physics of the Earth, Departments, GFZ Publication Database, Deutsches GeoForschungsZentrum, ou_66027              

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 DDC: 550 - Earth sciences
 Abstract: Lithospheric-scale transform faults play an important role in the dynamics of global plate motion. Near-surface deformation fields for such faults are relatively well documented by satellite geodesy, strain measurements and earthquake source studies, and deeper crustal structure has been imaged by seismic profiling. Relatively little is known, however, about deformation taking place in the subcrustal lithosphere—that is, the width and depth of the region associated with the deformation, the transition between deformed and undeformed lithosphere and the interaction between lithospheric and asthenospheric mantle flow at the plate boundary. Here we present evidence for a narrow, approximately 20-km-wide, subcrustal anisotropic zone of fault-parallel mineral alignment beneath the Dead Sea transform, obtained from an inversion of shear-wave splitting observations along a dense receiver profile. The geometry of this zone and the contrast between distinct anisotropic domains suggest subhorizontal mantle flow within a vertical boundary layer that extends through the entire lithosphere and accommodates the transform motion between the African and Arabian plates within this relatively narrow zone.

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 Dates: 2003
 Publication Status: Finally published
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 Identifiers: eDoc: 4007
GFZPOF: 2.0 Geodynamik, Stoffkreisläufe und Ressourcen
DOI: 10.1038/nature01982
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Title: Nature
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Pages: - Volume / Issue: 425 (6957) Sequence Number: - Start / End Page: 497 - 501 Identifier: CoNE: https://gfzpublic.gfz-potsdam.de/cone/journals/resource/journals353