Clay Dikes in the Lower Kittaning Seam in Northern West Virginia.
96th Annu Mtg of Geol Soc of America 1983 15(6):1 pages
Clay dikes have been mapped in the Lower Kittanning seam and the strata immediately surrounding the seam in an underground mine in northern West Virginia. Individual clay dikes, ranging in size from a thin film to intrusions several feet wide, have been traced as far as 900 ft laterally within the seam and surrounding strata. The vertical extent of the clay dikes is unknown.
96th Annu. Mtg. of Geol. Soc. of America, V. 15, No. 6, Sept. 1983, P. 662