GREB, STEPHEN F., and DONALD R. CHESNUT, JR.,  O. BARTON DAVIDSON, Kentucky
Kentucky Geological Survey, Lexington, KY, and RENE RODRIGUEZ, University of Kentucky, Lexington, KY

Evidence for Early Pennsylvanian Faulting in Eastern Kentucky Coal-
field

	A series of sedimentary features including a mass-flow deposit and
contorted pseudo-nodule layers at approximately the same strati-
graphic horizon on the eastern, downthrown block of a normal fault
system along the Rockcastle River in the Eastern Kentucky coalfield
indicate that the fault was active during deposition of the Lee sand-
stone.
	The rarity of mass flows in this part of the section, a change in paleo-
currents compared with surrounding units, the abundant shale clasts
indicating short transport distance, and the detrital siderite clasts
within the flow that are abundant on the upthrown block of the fault
and not in underlying sandstones on the downthrown block of the fault
indicate that movement along the fault provided an upthrown source of
sideritic shales and may have triggered the mass flow.
	Several areas of slumping and contorted bedding also occur on the
downthrown side of the fault. Of particular interest are two shaly units
containing isolated and contorted sandstone pseudonodules or pillows.
The sandstones are tightly folded but exhibit no apparent preferred ori-
entation of folding or horizontal translation. These deposits are also
unique to this area in the coalfield and coupled with their location near
the fault may indicate that liquefication of sand and shale layers was the
result of seismic energy from the nearby fault.