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Short Notes |
1 Institute of Geology and
Geophysics
Chinese Academy of Sciences
Beijing, 100029, China
Yangtze University
Jingzhou, China
changxu{at}mail.igcas.ac.cn
(X.C., Y.L., J.H.)
2 Department of Geology and
Geophysics
University of Utah
Salt Lake City, Utah, 84112
(H.S.)
We used regional P-wave arrival times to invert for 3D velocity
structures beneath the Taihang Mountains, which are bordered by the intensely
active zones of the Shanxi rift to the west and the eastern plain basin to the
east in the North China Block. P-wave velocities show that low
velocities (–1.0 to –3.0%) are focused at depths of
15–20
km beneath the Taihang Mountains, similar to those beneath the active zones of
the Shanxi rift and the eastern plain basin, If the lower velocity is
representative of weakness in the underlying crust, there our results indicate
that the Taihang Mountains might be potentially active, because the structure
patterns are similar to their bounding active zones. Future seismic research,
therefore, should strongly focus on the Taihang Mountains.
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