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.
%0 Journal Article
%1 rumpker_etal:2003
%A Rümpker, Georg
%A Ryberg, Trond
%A Bock, Günter
%A DESERT
Seismology Group,
%D 2003
%I Nature Publishing Group
%J Nature
%K geophysics seismology
%N 6957
%P 497--501
%R 10.1038/nature01982
%T Boundary-layer mantle flow under the Dead Sea transform fault inferred
from seismic anisotropy
%U http://dx.doi.org/10.1038/nature01982
%V 425
%X 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.
@article{rumpker_etal:2003,
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.},
added-at = {2012-09-01T13:08:21.000+0200},
author = {R\"{u}mpker, Georg and Ryberg, Trond and Bock, G\"{u}nter and {DESERT
Seismology Group}},
biburl = {https://www.bibsonomy.org/bibtex/2594fbec2d3ed7407bfd3c9ec94c6e475/nilsma},
day = 02,
doi = {10.1038/nature01982},
interhash = {639109a9ece8a80b0a159c1ca89e9b94},
intrahash = {594fbec2d3ed7407bfd3c9ec94c6e475},
issn = {0028-0836},
journal = {Nature},
keywords = {geophysics seismology},
month = oct,
number = 6957,
pages = {497--501},
publisher = {Nature Publishing Group},
timestamp = {2021-02-09T13:25:23.000+0100},
title = {Boundary-layer mantle flow under the Dead Sea transform fault inferred
from seismic anisotropy},
url = {http://dx.doi.org/10.1038/nature01982},
volume = 425,
year = 2003
}