Show SOME ORE DEPOSITS YOM newly formed veins vein have hava pram such famous mining campi carlp a goldfield end and tonopah To 1 ore de deposits posits ranging in age time when the most complex hia thing on the earth was a crablike ii ture down to the time when manas were highly developed have been tom lio in this country among the boce deposits Is ii a group known to pi rii fists ns as the late tertiary veins these veins are widely and are of particular interest not qa t because they have given rise to fa ass mining camps such as tonopah To GS field and comstock Cor astock but because to their comparative youth the tha suell sari on which they crop out Is not cot pal gmt below that choch existed at the ts th of their origin thus by consid the surface conditions and by lobe lain tory experiments the phenomena 0 present can be interpreted more am bately than those ot of older depo which are at greater depths RAP and B more deeply cut by erosion many of the late tertiary retail this country all in layl laios 14 or closely associated with then them I 1 r found in nevada |