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The AAPG/Datapages Combined Publications Database

AAPG Bulletin

Abstract


Volume: 53 (1969)

Issue: 3. (March)

First Page: 716

Last Page: 717

Title: Vibro-Box Sampler: New Tool for Study of Sedimentary Structures in Nearshore Sands: ABSTRACT

Author(s): Charles W. Ellis

Article Type: Meeting abstract

Abstract:

Increased exploration for stratigraphic traps in ancient shallow-marine sandstone and the resulting problems in environmental reconstruction have emphasized once again the lack of information on the characteristics of modern counterparts. The vibro-box sampler is designed to provide data on sedimentary structures of sand from the important zone between low tide and the 10-fm line. The sampler is a combination of the box sampler of Klovan, as modified by Imbrie, and the vibro-corer of Sanders.

The sampler is made of stainless steel (to resist corrosion) and can recover a 20 by 19 in., vertical, undisturbed "slice" from the bottom. A compressed-air vibrator is used, first, to drive the sampler into the bottom and, second, to activate a diagonal plate which seals in the sample. Additional vibration is necessary to free the sampler from the bottom. Surprisingly, the

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vibration disturbs only the boundary layer of the sample where it contacts the box directly. The vibro-box sampler and its accompanying compressor are relatively inexpensive and may be operated from a small boat. Divers orient the sampler and handle the operation, but with a more sophisticated system this could be accomplished from the surface.

After the sample is collected, sand is removed with a trowel or small shovel until a smooth vertical face is exposed. The sample is dried for about 24 hours and then partly impregnated with polyester resin. The relief surface formed by differential penetration of the plastic shows sedimentary structures in great detail.

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Copyright 1997 American Association of Petroleum Geologists