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The AAPG/Datapages Combined Publications Database

AAPG Bulletin

Abstract


Volume: 65 (1981)

Issue: 4. (April)

First Page: 755

Last Page: 755

Title: Geophysical Studies of Evaporites in Northern Delaware Basin, Texas: ABSTRACT

Author(s): L. J. Barrows

Article Type: Meeting abstract

Abstract:

Geophysics has been an integral part of the Waste Isolation Pilot Plant since its inception. Previous activities have included electrical resistivity surveys, review of petroleum exploration Previous HitseismicNext Hit lines, purchase of aeromagnetic and gravity surveys, installation of an earthquake seismometer, a Previous HitseismicNext Hit refraction survey, and five Previous HitseismicNext Hit reflection surveys. Ongoing or planned activities include installation of a multistation seismometer array, subsurface radar, Previous HitverticalNext Hit-gradient aeromagnetics, and high-resolution Previous HitseismicNext Hit work.

The Previous HitseismicNext Hit reflection and gravity data indicate complex structure in the northern part of the site. The Previous HitseismicNext Hit lines show a deterioration in reflector quality, character, and continuity within this disturbed zone. Events within the Castile Formation have a blocky nature with abrupt offsets and angular discontinuities between blocks. The lower members of the Castile Formation are thinner than normal. Both the underlying Delaware Mountain Group and overlying Salado Formation are less deformed than the Castile. Well control is consistent with the Previous HitseismicTop interpretation. An interesting feature is an "expandable scale" contraction of the lower Salado in two wells in which individual beds are present but have been reduced 10 to 50% in thickness.

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Copyright 1997 American Association of Petroleum Geologists