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The AAPG/Datapages Combined Publications Database
Houston Geological Society Bulletin
Abstract
Abstract:
Seismic
Signature of Serpentine Plugs
in the Maverick Basin
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Basalt necks occur on the surface in Uvalde and Kinney Counties in southwest Texas. These basalt necks are the "serpentine plugs" that produce from the Taylor section in the subsurface of Zavala County. Many plugs exist in both the surface and subsurface.
Geology of the "serpentine plugs" indicates that most of the volcanic activity occurred as post-Austin subaqueous extrusions. Formations below the volcanic material show no structural deformation. Formations above the Cretaceous seldom show evidence of the pile of volcanic material. The most significant evidence of structure and faulting is within the Taylor section.
The application of two dimensional forward lithological
modeling
is successful in producing a velocity model to
display stratigraphic development. The use of an interactive
system is an important step in the interpretative process.
Strategically placed seismic
lines will give obvious
evidence of the existence of a "serpentine plug".
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