SEDIMENTOLOGY OF A DEBRIS-FLOW DEPOSIT, LEE FORMATION (PENNSYLVANIAN) , EASTERN KENTUCKY S.F. Greb, D.R. Chesnut, Jr., and O.B. Davidson (Kentucky Geological Survey, Lexington, Ky) A 4-meter-thick debris-flow deposit of the Pennsylvanian-age Lee Formation in Laurel County, Kentucky, was analyzed because of its unique sedimentary character and its position along the northwestern margin of a Lee sandstone belt. The deposit consists of scoured, matrix-supported conglomerates with siderite pebbles, cobbles, and boulders; shale chips; and shale rip-up slabs, in a matrix of moderately sorted, very fine- to fine- grained, arenitic sandstone. Facies include: (1) massive gravels, (2) gravels exhibiting crude, tabular crossbedding, (3) gravel exhibiting crude, trough crossbedding, and (4) gravelly sandstones exhibiting massive or convoluted bedding with sheet or trough-fill geometries. Gravel fabric is best developed in the tabular, accretionary facies with moderate imbrication of elongate siderite pebbles and large shale slabs. Facies analysis indicates that multiple, subaqueous- debris flows accreted subperpendicularly across a scour base along a declevity on the northwestern margin of a Lee sandstone belt. Imbrication was possibly the result of multiple accretionary events; shearing in laminar, channelized flows; and fluid mixing into the flows. Reworking of the debris created multiple scour surfaces that became filled with gradually sandier, more sheet-form facies up section.