Show SOME ORE DEPOSITS YOUNG newly formed veins have ahva produced such famous mining jiing campt as a goldfield and tonopah ore deposits depo alta ranging 1 in aga go from the t time i me when he the th I 1 most t complex living t thing lit OB an the earth we ana a crablike er crea A eath to tura it dona a to te the a time w when hein mammals w ere highly developed have been found in this country among the tha younger deposits I 1 la a group known to gisolo gaio alers as aa the tha late tertiary veins these e veins are widell distributed aurb and ar ara 0 of particular interest not only because they nave given rise to famous mining ramps camps such as tonopah To goldfield and comstock Com tock but because owing to their comparative youth the earlice fiur taca on as which they cro crop out ts Is tot not greatly fixated below that eboch existed at the time of their a origin agin thus by considering th the e surface conditions and by laboratory experiments the phenomena they present can be interpreted more mom accurately than those of older deposits which are a at t greater depths and are ara more deeply cut by erosion macy or of the lit late tertiary veins air 1 la this country all in love lava rocks or closely associated with them are ara f found it 1 in nevada |