...Steven Shifflett; Will Ailstock Abstract This paper is a case study documenting how the Rough River Dam Safety Modification Project evolved over time. Rough River Dam is an embankment dam located in west-central Kentucky that is owned and operated by the U.S. Army Corps of Engineers (USACE...

... a specific cluster, the high values of kernel densities are stretched vertically along most values of predicted probability ( Fig. 10 ). This suggests that the ranges of minimum slope, standard deviation of elevation, range of elevation and sum of roughness values that fall within the high kernel-density...

... in the earthquake catalog for Kentucky could result in a mistaken estimate of the rate of seismicity and, consequently, the seismic hazard for the state. Figure 4 summarizes the blasts (or roof falls) and earthquakes in Table 2 by their hourly distribution. Times of the events used for the bar graphs...

... Falls of Rough and Fordsville, along the steep hillsides, are probably of Clore age. Several miles west of Glen Dean, on the old Frank Dean farm, the Clore is exposed on a hillside west of the residence. The only section measured is at Buffalo Wallow, where the Clore is 20 feet thick. Degonia...

... segment orientation reveals several areas of divergence in assigned fault‐slip risk. These changes are especially apparent within portions of the Wabash Valley of southwestern Indiana and the Shawneetown‐Rough Creek fault system of western Kentucky and southern Illinois. The assessment of fault‐slip risk...

...; and although a relatively wide contour interval is used, the more important structural trends within the basin are evident. Fig. 4. STRUCTURE OF THE EASTERN INTERIOR BASIN The relationship of the semi-detached Kentucky part of the basin to the adjacent Rough Creek-Shawneetown fault system is also...

... and Ouachita margins, would have had to produce catastrophic amounts of ash to have produced a significant ash fall in western Kentucky. The only known igneous rocks in the area are Permian periodotite and lamprophyre dikes as well as diatremes of ultramafic composition associated with the Fluorite district...

... and eastern North America, whereas the Rough Creek graben is one of the least active (Wheeler et al. , 1997) . On 6 June 2003 at 12:29 (UTC), a moderate-sized ( M w 4) earthquake occurred near Bardwell, Kentucky ( Fig. 1 ). Bardwell is approximately 57 km northeast of New Madrid, Missouri, in an area...

... in microseismic data , Geophys. Prospect. 59 , 593 – 608 . Wheeler R. L. ( 1997 ). Boundary separating the seismically active Reelfoot rift from the sparsely seismic Rough Creek graben, Kentucky and Illinois , Seismol. Res. Lett. 68 , 586 – 598 . Woolery E. W. Street R...

..., and Hamilton counties. A second basin with large thickness is in western Kentucky in Union, Webster, and Hopkins counties south of the Rough Creek fault where maximum depth of the base of the Pennsylvanian of 2,390 feet is recorded on electric logs. Glenn (1922, p. 31) prepared a composite section from...

...–Shawneetown fault systems in southern Illinois ( Nelson and Krausse 1981 ; Nelson 1991 ) and the Rough Creek graben in western Kentucky, hypothesized to be a continuation of the Reelfoot rift, comprising the northern extension of the failed rift system ( Kolata and Nelson 1991 ; Marshak and Paulsen 1996...

...Ivan L. Zabilka ABSTRACT The Harvard-Kentucky Geological Survey Summer Schools in 1875 and 1876 represent a significant turning point in the method of educating geologists. The transition from apprenticeship to group field experience originated in the fertile mind of N. S. Shaler, Harvard Professor...

.... The clayey soils in the northern Kentucky area probably fall somewhere between these two examples, thus expansion and contraction values, although non-zero, would lie below the threshold values calculated for this study, the smallest of which is 0.05 m. The influence of vegetation on SfM DEMs is well...

... Lexington dome. 2. Orientation of Rough Creek and Irvine-Paint Creek faulting on south flank of ancestral dome as result of Silurian folding along newly formed Cincinnati arch. 3. Location of complexly faulted area of western Kentucky and southern Illinois where trend of ancestral dome meets trend of older...

... to this pattern may be the apparent rotation of the stress field in the proximity of the southern part of the Wabash Valley Fault System ( Ault et al., 1980 ) ( Figure 10A, B ) and the Rough Creek–Pennyrile Fault System in western Kentucky. In this locality the S H orientation appears to be essentially east...

... to estimate magnitudes and locations for the large aftershocks as well as the mainshocks. Several detailed eyewitness accounts of the sequence provide sufficient information to identify times and rough magnitude estimates for a number of aftershocks that have not been analyzed previously. I also use three...

... series of ramifying faults known as the Rough Creek fault zone ( Fig. 1 ) in western Kentucky. It decreases in importance toward the east, but appears to cross the Cincinnati arch and connect with the Irvine-Paint Creek disturbance of eastern Kentucky and the Warfield and Chestnut Ridge anticlines...

... Tile Company No. 1, drilled by Galey and Flesher, Cloverport Breckinridge County, (2) Len Smiley No. 1, drilled by H. C. Hume and A. J. Early, 10 miles north of Falls-of-Rough Hancock County, (4) Joseph Holder No. 1, drilled by Galey and Flesher, 1 mile east of Indian Lake Hardin County, L...

... floodplain in the southernmost WVSZ in western Kentucky evaluated whether the scarp is a fluvial landform or a tectonic feature. Geomorphic mapping and optically stimulated luminescence geochronology show that the age and orientation of the scarp are inconsistent with surrounding fluvial landforms. Trenching...