Resources of south-west Virginia, showing the mineral deposits of iron, coal, zinc, copper and lead . ries. Itgives rise to no other waters, except perhaps a few of thehead springs of Laurel Creek—a tributary of Holston may be considered one of the best-watered counties in theState. Not only does New River carry at all seasons suffi-cient water for even navigable purposes, if improved; but itsnumerous tributaries, flowing from never-failing springs, sup-ply a wealth of fine water for every purpose. GEOLOGICAL. There is a difference of opinion among geologists as to theexact classifica
Resources of south-west Virginia, showing the mineral deposits of iron, coal, zinc, copper and lead . ries. Itgives rise to no other waters, except perhaps a few of thehead springs of Laurel Creek—a tributary of Holston may be considered one of the best-watered counties in theState. Not only does New River carry at all seasons suffi-cient water for even navigable purposes, if improved; but itsnumerous tributaries, flowing from never-failing springs, sup-ply a wealth of fine water for every purpose. GEOLOGICAL. There is a difference of opinion among geologists as to theexact classification of the rock formation in Grayson. It maybe stated here with confidence, that the assertion will befinally sustained, that the southern side of the county is inthe gneissoid system, belonging to the Laurentian rocks, andthat the northern side of the county is marked by the rocksof the Huronian epoch. The trend, or direction of the out-crop of the strata is between north 453 east and north65c east. The dip is usually southwardly, or rather, at GRAYSON COUNTY. 297 © 3 | 5* Xwhite TopBuckMlnA. PPER LODF. tfeach lottom ,Mountain 13* 298 GEAYSON CO.—GEOLOGICAL. riglit angles to the trend. It is apparently monoclinal, thatis, the ledges all seem to dip in one direction at greateror less angles, and do not now show the evidence of anyfolding in the earths crust there, other than a close simi-larity in the appearance of many of the ledges, and anevident recurrence of the same mineral-bearing series. Fromthe latter circumstance it may be inferred that anticlinalfolds have occurred, though to make out now, in these par-tially metamorphosed rocks, any distinct order of stratifi-cation or superposition would be impossible. The rocksof Grayson undoubtedly belong to that long period of tran-sition between the unstratified Azoic and that series which,more than any other, has the right to be called the first offossil-bearing rocks—the Lower Potsdam, or the first of theCambrian or Lo
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Keywords: ., bookcentury1800, bookdecade, booksubjectminesandmineralresources
