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<br />OQ2123
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<br />42
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<br />Kansas State Board of Agriculture
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<br />Oskaloosa shale.-In this member of the Deer Creek formation
<br />are included dense clay shale, fine sandstone and a minor amount of
<br />limestone and calcareous sh'ale. The limestone and calcareous shale
<br />occur in the middle part. The total thickness ranges from about 28
<br />to 33 feet. Because of the sandstone included locally in its lower
<br />part, it should be sealed in the south valley wall in the vicinity of
<br />hole NO.4.
<br />Ozawkie limestone.-The Ozawkie limestone is 5.7 feet thick in
<br />hole 'No. 1, and 5.5 feet in hole No.4. It consists of rather fine-
<br />grained compact limestone. Fossil fusulines are abundant. It is
<br />deeply weathered in hole No.2, but has not been affected by
<br />weathering in hole No.1.
<br />Tecumseh skale.-The Tecumseh shale is about 15 feet thick in
<br />this area. It is a water-tight clay shale.
<br />Avoca limestone.-The Avoca limestone in this area consists of
<br />(1) an upper limestone, about 4Yz feet thick, (2) a shale, about 2Yz
<br />feet thick, (3) a limestone of about 2 feet, (4) a shale about 1 foot
<br />thick, and (4) II lower limestone about 1 foot thick. The lime-
<br />stones are relatively dense and hard and the shales are somewhat
<br />calcareous. None of the rock material has been affected here by
<br />solution.
<br />King Hillskale.-This shale is present below the valley fill and, in
<br />my judgment, forms a suitable dam floor. Its total thickness is
<br />about 15 feet. The upper approximate one-half is calcareous, con-
<br />taining thin zones of limestone, but the lower half is noncalcareous
<br />and quite water tight. It is believed that the lower part will eonsti-
<br />tute an excellent floor for a dam and that all of the calcareous shale
<br />in the upper part of the King Hill shale should be removed along the
<br />center line of the dam along the entire distance overlain by valley
<br />fill.
<br />Beillimestone.-The Beil consists of about 5 feet of rather dense,
<br />gray, limestone, and about 2 feet of underlying calcareous shale and
<br />granular limestone. It and the overlying shale will serve as a firm
<br />foundation for a dam.
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<br />ALLUVIUM IN THE DAM SITE
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<br />Valley fill material ranging up to nearly 36 feet in thickness un-
<br />derlies the flood plain of Neosho river along the dam axis. It is
<br />understood, of course, that these weak, pervious materials must be
<br />removed along the axis of the dam. As shown in test holes Nos. 7
<br />and 9, about 12 feet of clay is present along the axis in the northern
<br />part of the site. From observing the topography, it is evident that
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