Piute Chieftain | 1917-01-25 | Page 3 | Some Ore Deposits Young

SOME ORE DEPOSITS YOUNG a newly formed veins have produced such famous mining camps as I 1 goldfield and tonopah To ore deposits ranging in age from the time when the most complex living thing on the earth was a crablike crea ture down to the time when m animals were highly developed have been found in this country among the younger deposits Is a group known to geologists na as the late tertiary veins these veins are widely distributed and are of particular Inte interest iest not only because they have given rise to famous mining camps such asTo as tonopah To goldfield and comstock but because owin owing 9 to their comparative youth the surface on which they crop out oft Is not greatly below that choch existed at the time of their origin thus by considering the surface conditions and by laboratory experiments the phenomena na they present can be interpreted more accurately than those of older deposits which are at greater depths and are more deeply cut by erosion many of the late tertiary veins in this country all in lava rocks or closely associated with them are found in nevada