CENTEAL AND EASTERN NEVADA. 355 



ward; where most frequently observed by the writer, with an angle of 30 or 

 40 degrees from the horizon. Thus in the Timoke the vein is faulted by such 

 a cross-course, having a north and south direction and dipping westerly 30 

 degrees, throwing the vein 30 or 40 feet. The Manhattan is similarly faulted, 

 the original work of that company having been performed upon the outcrop, 

 supposed to be the continuation of the Timoke, but reaching the fault at no 

 very great depth ; after which a vertical shaft was sunk at a point several hun- 

 dred feet northeasterly from the outcrop, which struck the vein at a depth of 

 183 feet. The large body of the ore in the Buel is cut off by a cross-vein 

 having similar course and dip to that just described. A fault of this charac- 

 ter, as it appears in the Savage Mine, is illustrated on Plate XXYII, Fig. 3, 

 concerning which some notes will be fonnd further on. 



The extent of the faulting by these north and south veins may vary from 

 30 or 40 feet to, perhaps, several hundred. Some of the most productive 

 veins of the district that have thus been faulted have never since been recov- 

 ered. The cross-veins are usually very narrow fissures, carrying little else 

 than a seam of clay, and, so far as known to the.writer, are not ore-bearing to 

 any noteworthy extent. 



Besides these more important faults, occasioned by the cross-veins just 

 described, which, there is some reason to beheve, traverse the entire system 

 of northwest and southeast veins, affecting them all similarly or to some ex- 

 tent, there are numerous slighter faults or breaks, occasioned possibly by the 

 same general movement of the ground, but in which the vein has broken into 

 two parts, of which the upper has slidden, as it were, down hill, away from 

 the deeper part. These movements, sometimes many feet in extent, are often 

 very slight, frequently but a few inches. In the latter case the two parts of 

 the broken vein are visible close together, the upper part, however, having 

 slipped down so that the two walls no longer form continuous planes, as they 

 did while in their original position. Such breaks are often repeated at short in- 

 tervals and do not always create difficulty in following the inclination of the 

 vein with a shaft. Sometimes, however, the fault or movement is great 

 enough to throw the two portions of the broken vein so far apart that no in- 

 dication of the deeper portion is visible in the shaft, or incline, that may have 

 been sunk upon the upper portion from the surface to the point of disloca- 



