Summary: Seismic Anisotropy and Mantle flow beneath Western Venezuela
Jeniffer Masy,1 Fenglin Niu1 and Alan Levander1
1Department of Earth Science, Rice University, Houston, Texas, 77005
4.Discussion and Conclusions
1. North of the dextral strike-slip Oca-Ancon Fault, spliting times are large and can
be interpreted as eastward mantle flow beneath the Caribbean plate.
2. Along the southeastern edge of the Maracaibo block the split measurements sug-
gest the entire lithosphere is deformed coherently parallel to the Bocono Fault.
3. Inside the Barinas-Apure Basin delay times are small with an east-west orienta-
tion, which is consistent with the absolute motion direction of the South American
Figure 4: Measured splitting pa-
rameters are shown together with
the topography of the study
region.The orientation of the black
solid lines indicates the orientation
of the fastest direction. In general