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Brief Report for Kentucky River fault system (Class B) No. 2650
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citation for this record: Crone, A.J., compiler, 1994, Fault number 2650, Kentucky River fault system, in Quaternary fault and fold database of the United States: U.S. Geological Survey website, http://earthquakes.usgs.gov/regional/qfaults, accessed 11/24/2009 06:25 AM.
| Synopsis | Kentucky River fault system is one of a series of major regional fault systems that extends east-northeasterly across Kentucky. The western members of these fault systems are the Shawneetown and Rough Creek (discussed separately as Class C faults) fault systems in southern Illinois and western Kentucky. The Kentucky River fault system crosses central and eastern Kentucky, and the Woodward fault is the eastern member of this network in western West Virginia. Information on Quaternary faulting in the fault system is based on work of Van Arsdale (1986 #684). Although this study found evidence of Quaternary deformation in trenches across various strands of the fault system, the amount of deformation is generally small and could be related to collapse from solution of the underlying bedrock. The evidence is equivocal, and thus the feature is assigned to Class B in this compilation.
Van Arsdale's (1986 #684) report of possible Quaternary movement on this regional fault system is based on studies at four sites on various fault strands. Because there is no geomorphic expression of Quaternary faulting at any of these sites, it is impossible to define and measure specific fault parameters (azimuth, length, etc.) for Quaternary faulting. |
| County(s) and State(s) | |
| AMS sheet(s) | Winchester |
| Physiographic province(s) | |
| Length (km) | 0 km. |
| Average strike | |
| Sense of movement | various |
| Dip Direction | SW; NE |
| Historic earthquake | |
| Most recent prehistoric deformation | Quaternary (<1.6 Ma) |
| Slip-rate category | Less than 0.2 mm/yr |
| Date and Compiler(s) | 1994 Anthony J. Crone, U.S. Geological Survey |
