Show GEOLOGY OF IH THE GREAT AH 1 DISTRICT DESCRIBED BY AN EXPERT 1 r VT it t TL r-TL i iV V f- f g T gr h I Q r f r 1 1 k N k 1 k r L 1 1 7 41 7 1 y Si I- I V I y Jj I I SOME OF TONOPAH'S PAIR FAIR SEX J Tho The geological aspect of or the famous Tonopah district presents all the intricate In Intricate Intricate In- In and phases o of the Cripple Creek formations with a n. number number num num- ber her of oC problems added Generally Generall speaking the mountain ranges of oC Nevada Nc are arc broken and disconnected disconnected disconnected dis dis- connected from one ono another by various n agencies during the different geological 1 periods period leaving a spur or a single peak isolated from Crom Its neighbors and representing representing representing an entirely distinct and different dif dif- different ferent period and eruptive formation Tonopah Is no exception to this general general general gen gen- eral rule The great and surrounding mines occur in volcanic breaks or fissures fissures fis fis- fis ures v where here the seismic force of oC the upheaval was strongest breaking through the surface strata with sufficient sufficient sum sum- force orce to cast ast aside and fuse the surface rock with the older and deeper formations as they were forced to the surface All lines of ot fracture in the Tonopah formation show violent volcanic action re regardless of mineral deposition The pre presence ence also of ot nearl nearly all aJI of the Igneous rocks common to a volcanic country argue well Hell ell in favor Cavor of or an extensive extensive ex extensive ex- ex mineral zone beyond the well- well known discoveries The mineral mineral- bearing zone one or 01 belt at Tonopah I Is very verv extensive Judging from present discoveries discoveries dis dis- and general forma formation being proven and defined b by actual prospecting prospecting prospect prospect- ing for Cor a distance of or thirty miles in a northerly and southerly direction and traversed In an caster easterly and westerly wester direction for several miles by mineral mineral- b bearing aring and porphyry dykes which In many places have been forced to the surface through the and secondary lava la flows which at Intervals covers the country countr over overlarge largo large areas The values at Tonopah consist principally principally principally prin prin- of or gold and silver bearing ores of or a EL refractory nature which require smelting smelling to recover the the- values Other processes are being tried trial In an experimental wa way however and the local hope pope to solve the problem of cheap local reduction In the near future I How extensive and how rich arc the ore deposits underlying Nevadas Nevada's city of ot gold no man knows s an and few fen are ra rash h enough nough to hazard a prophecy yet jet from pre present ent showings and ore in sight It Is 13 no travesty o of truth to say that thal the Comstock has a tv twin In at Tonopah EARL C C. DART |