Kansas Geological Survey, Open-file Report 2006-23
by
Jamie L. Lambrecht
B.S., Benedictine College, 2003
Kansas Geological Survey
1930 Constant Avenue
Lawrence, KS 66047-3724
Submitted to the Department of Geology
and the Faculty of the Graduate School of
the University of Kansas in partial
fulfillment of the requirements for the
degree of Master of Science
2006
Thesis Defended April 14, 2006
Kansas Geological Survey
Open-file Report No. 2006-23
Time-lapse high-resolution seismic reflection techniques elucidate the subsurface geologic condition of a sinkhole that formed in Pawnee County near the town of Macksville in central Kansas. Collapse of the Macksville sinkhole in 1988 resulted forming a cavity that increased in size with time. This sinkhole is one of a very few that have speculated to form catastrophically from bedded salt dissolution in the central United States. Two orthogonal high-resolution seismic lines were acquired in 1998 and one was acquired in 2005, from a 204-channel fixed spread of geophones. The line acquired in 2005 was kept as close as possible to the equivalent 1998 line. This sinkhole is uncommon in terms of its initial catastrophic subsidence rate and represents a critical data point that with other data may some day allow the prediction of failure prior to surface expression.
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Kansas Geological Survey, Geophysics
Placed online July 12, 2006
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