Courthouse drilling unearths lots of clay, but no cave
by Alan Reed -- areed@cadizrecord.com
Mar 22, 2006 | 0 0 comments | 3 3 recommendations | email to a friend | print
Judge Executive Berlin Moore looks on as Chip Wilkinson bores into the Courthouse Lawn.
Judge Executive Berlin Moore looks on as Chip Wilkinson bores into the Courthouse Lawn.
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Geological testing beneath the Trigg County Courthouse on March 17 yielded results that pleased the county and the Project Development board. There were no caverns found beneath two holes drilled on the courthouse lawn.

Operating the ATV-mounted drill for the firm of CMW, Inc. was Chip Wilkinson. As he continued to lengthen the drill with 3-foot sections of auger, a good sample of what was beneath was brought to the surface. “Nothing but good, stiff clay here,” he stated.

Supervising the exploration was Trigg County Judge Executive Berlin Moore, who described the objective. “He’ll drill as far as he can, to determine if they need to go deeper with heavier equipment.”

Though primarily red, ferrous clay, small bits of a sedimentary rock known as chert were brought up as well. Common in layers of limestone, it is the fossilized remains of ancient seabed animals. Occasional tests with a mild sulfuric acid solution confirmed some limestone as well.

Large layers and deposits of water-soluble limestone can be eroded into sinkholes and caverns, such as Kentucky’s Mammoth Cave.

The first hole, on the west side of the lawn, burrowed down before the drill was halted by a hard object. Though he could not comment officially, 6 and roughly 2/3 of a 7th section were submerged beneath the grass, for an unofficial depth of 20 feet.

“20 feet and we’ve got just that, clay,” said architect Dennis Arthur, satisfied with the findings.

For the rest of this article, please see this week's edition of The Cadiz Record.
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