. Jefferson, Berkeley, and Morgan counties, by Grimsley, assistant geologist. White, state geologist. eans (in Maryland), which is partlycovered with river gravel, but the rock revealed beneath the gravelby the Western Maryland Railway cut demonstrates that if this shortcut was abandoned owing to the channel being filled with alluvium,in the same way that the change in the Purslane ox-bow is explained,the early channel was not cut as deep as the present river bed. ROCKWELL RUN.—Along the western side of the area,the streams arc small runs which rise on Purslane Mountainand reach the
. Jefferson, Berkeley, and Morgan counties, by Grimsley, assistant geologist. White, state geologist. eans (in Maryland), which is partlycovered with river gravel, but the rock revealed beneath the gravelby the Western Maryland Railway cut demonstrates that if this shortcut was abandoned owing to the channel being filled with alluvium,in the same way that the change in the Purslane ox-bow is explained,the early channel was not cut as deep as the present river bed. ROCKWELL RUN.—Along the western side of the area,the streams arc small runs which rise on Purslane Mountainand reach the Potomac by short courses. Rockwell Run isthe largesl of these and follows the high-level valley betweenSideling Hill and Purslane Mountain, at an elevation of 1200to 1600 feel above sea, to a transverse gap at the north end o!Jnrslane Mountain, where the run turns to the west, reachingthe Potoma* one mile south of Orleans Crossroads. Its totallength i-about five miles with a fall of 1140 feet, or nearly 230feel to the mile. The grade For four miles falls 100 feet every WEST VIRGINIA GEOLOGICAL SURVEY. 55. Contour interval 50 feet. Figure 5. Abandoned River Channel of the Potomac near Pawpaw, Morgan County. half mile with marked regularity. Like all these mountainruns, they carry in ordinary season a small volume of waterfed by springs, but in a period of rains become roaring torrentswith rapid erosion. GREAT CACAPON RIVER.—The most prominentstream in the western part of the area is the Great CacaponRiver whose life history and alterations form an interestingchapter in the physiography of the region. The river has itssource in the highlands of the southeastern corner of HardyCounty and follows a northeasterly course across the easternportion of Hampshire County and across the west central partof Morgan to the Potomac at Great Cacapon Station on theBaltimore and Ohio Railroad. The air-line distance from itssource to its mouth is 64 miles; while by the river channel,the distan
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectgeology, bookyear1916
