Show GEOLOGY 0 vac BY 13 yi 1 E R IBBS GIBBS G 1 BB S Maryo vats barring complex comple x condit conditions lous caused ty f r unusual faulting along tho the foothills on the east cast and back anto the poulita Mo mountains ulita ifie a 9 distance of from three to lour four mues miles the geo logy odthe of the marysvale Marys vale vRle divis division divisions ionis is easily read it Is clearly evident that ats at some omd depth the entire range is with a broken and faulted substructure of quartzite and that it may be credited to the devonian age A small arato arca to th of the gold run aun canyon road presents toome bome contradictory evidence the overlying Ji c contains lossius jfoss ils credited to io an earlier age than the devonian its presence Is an enigma anil and cannot be discussed at this time the preponderance of eviden ceIs Is that thata dl represented bythe by the mt baldy rane rame and its n northern prolongation the i v valvan pah van mountain fi between milliard and j sevier Se viert counties yag under sund the ocean during the devonian age 1 hundreds lund reds perhaps i I 1 ij thousands of feet of sandstone was de depos P os cited the succeeding lower gorlod covered the sandstone with a thick lied bed of limestone at the close efa the lower carboniferous jm a gentle upward movement occurred and area under discus discussion sidn rose above the surface of the ocean where it remained during the enormous lapse time that intervened Ife between tween the closing cent of the aee lorer and well along towards t th hl 1 close of the age bhea an al i 1 most world alde change of level occurred along the east tide side of and parallel with abat Is ils now known as the mt baldy range and its northern prolongation the i range the ear crust was fissured fia aured from thir an dace dory to the region of of molten rock the was wae succeeded by faulting ww SIMS an idea ot the displacement may be de formed from the statement that deter deer trail mcafe thia the hig highest heat ele elevation vailon of is fully feet higher than the cailey ya wa iley ildy while the eastern section of the quartzite it burfet iou ried beneath hundreds hun dreda of feet of and other eruptive material the die displacement placement extended northerly a distance u of nearly JOO miles in sevier tho the sandstone e so conspicuous along the east easta cidre of tho mountain mounta inn ij IB a tho bant bido bide at 0 the talky buried under hun alf OZ O Z v i aton material this stupendous displace ment iba known as the sevier fault in tho ahe iii of nf Marye Mryt Tale rale a oure hire on the east paralleled th Sevier fault and andis 19 now marked by abringe of basaltic bae altic foothills and volcanic adlay must bave havea continued over a long period after comparative quiet reigned alft the mt baldy range the evidences of which are found in the fhe mixture of volcanic bombs and debris dearl in a belt of oolite bullion canyon represents presenta rc a lateral fault extending froni from the sevier fault the apex of them the divide between two mile and bullion is quartzite and to is fully 1500 feet agh higher er than the Quartz llo to the norths of bullion creed another area ot of stupendous displacement exists along thel the cottonwood fault where deer trail 1 peak rises fully 1000 feet above we quartette on the ald ridge aeao to the of cottonwood Cotton woo the topographical and cross section mapa to which the readers attention le ie in cited will vo to illustrate the profound wt northerly herly a tid southerly faulting of the choba basic formation forma tiou of the mt lit baldy range the teachings of geology prove that the a AAM i va I 1 xa ja fa rp h N q 49 N a lip N ba C V Q u err f z 11 c vj ai I 1 az A ll 11 ar 4 x it 4 ra t 2 A 1 J 5 r x AV VP aqui ca inal ag q a toiv jv 0 V g 77 lyt 0 af M wpc 10 uta f P A A a N A g to fur it R T 47 V 7 ty I 1 nj a OA N g 1 mot atiq st ORA PHI CAL mara L DY div ISLO dynamical history of the region to the west vrest and southwest ot of maryeva 16 Js is as aa fo follows llowd A largo large area arch oc occupied ullo dby by sandstone with a limestone capping because of the shrinkage of th mhd earth ear th molten interior or bago bage be caused of life accumulation of gases seeking lines linen of easement the crust was effs assured anal broken broleen into enormous fragments or kiocho soma af pf the great masses h twined thinea their flon but the larger por tion settled down into the yielding mass ot of r underlying under lyli n g igneous matter from 1110 3 eya griffig yany ning fissures enormous enor moua masse ew of and birda eye porphyry oozed up from the earths melted interior and formed thousands of foot deep athe un une tabler stabler atiat artist quivered with intense At etise seismic force forced theold and bute but aily healed wounds were opened and vew now fissure fis anres ts formed in the th ea overlying emy tate asb dykes of highly min porphyry now no mark tho the location and direct direction fon of anany of chosen ancient through the weight of tho the superimposed super imposed mass Q of eruptive material the assoria associated ted 1 underlying sandstone was altered i to the now familar quartzite there are several reveral localities lacall afes rethe sandstone escaped those agencies ancl and retains ua its old boldn f time characteristics and insensibly merges me N into quartzite as it ian isears ears the igneous 1 cpr r mat lations fons tho the brief period of comparative quiet which succeeded the previous disturbances was broken by another of the ranger ranger and along dilong the 4 central i p portion exten extending ding from gold mountain south a distance ot some ten miles a great fissure was formed I 1 from the surface down to the region regio n ot of liquid fire the mighty force which split i 1 the noi northern thern portion of 0 the mt Baldy range also formed lateral fissures extending east erly and westerly vc sterly frony from the great cen central trall rent those these fissures became lines of ease ment for the of mag ma ina seeking egress egre and an from t molten depths the ous mud flowed upward and formed great dykes of phonolite which to day cheerily clinks under the feet of an occasional prospector while the eruption of the phonolite i marks the last throes ot of nature in the mt aft baldy region subsequent i lac local assuring of the phonolite occur occurred redd and in conic connection tion with other fissures fIss unes al 4 ready formed became channels forthe upward and lateral flow of go aldand silver bearing solutions 8 1 l extinct craters fields of dark colored y tra chite tc ridges vo volcanic leania breccia dykes and chimneys of obsidian ir ithe phonolite prove that local volcanic forces forays were con linued over along a long period after r the wide i A spread aprea eruptive I 1 activity had ceased ii the reader readers rea deris attention is now directed more particularly to the topographical and i cross section maps while wo we investigate the i results of dynamical forces just described s B to avold avoid confusion the great porphyry dykes only have been mapped and r the veins reins along the trend of those dykes area are y prominently drawn draw t the cross section shows trail rail mine occupying a blan blanket keV contact which i 0 o dips to the north at haboub eight or ten de grees and is hidden by overlying debria in thab locality the owners have 1 blocked 11 about abou tons of ore bre having an average croften ten or twelve dollars per jer tony aboab the south many carloads V odbre or e were shipped and which netted the several hi hundred indred dollars per ton sn in lead idad silver and gold IV IVIs itis Is believed that j the contact derived its filling by solutions from the ahe north where eruption rock Is in evidences eviden cs and probably associated with ae a lateral bault fault tho the hick grada ore to the thea south doubtless owed its origin to a see sec movement of solutions Ions which passed I 1 through the large body of ore leach edit it and transferred the concentrates to the portion of the contact higher IE I E up on tui der trail escarpment 1 Is situated thed lucky boy years year sago ago sd a large quantity of high grade mer amial ore the origin of Is un solved problem still higher on the mountain side is sit u abed the once famous pluto like the lucky buchy doy boy it proved to baa be a surface surf ace dap deposit osler in limestone the oredas almost pure silt sil t ver vcr und lind biltl no Y 1 borits its pre pres s once ence in ift a locality where conditions are so unfavorable i the first great porphyry rya dyle dyke that traverses almost the entire district occurs about taree ciree miles west from the mouth or of cottonwood canyons canyon and occupies thid the greats great northerly and southerly fault line along this dyke is is situated the nelson a vein of gom gol d blaring quartz that projects above the ground like a great dat wall wair the branch vein is strong anolta per has been proven it yields silver ana gold the standard is a monster ledge anil s 1 yields le lead ad silver and gold almost excle siv elyin sulphide conditions condition sr on the north end of the dyke dykers is situated the copper copp er belt to the he west of oc th the Ctr crestar star mine and ami trending northerly is a great dyke of porphyry that after traversing the f section bends northwesterly into the golds gold mountain district along this dyke is ifs bit at ki t high grade ore and now hus hue exposed a 18 15 foot vein that averages 20 per ton the property is being worked by pittsburg poop tile pie and ought to develop into a bonanza down on the bullion creek side the dyke formal the hanging wall of the webster a monster vein with great chutes of galena and ami crystallized leaff lead carrying gold andt ancl the basalt extends some three to tour four miles north of the canyon and is also bounded by rhyolite and other orup tivo rocks brockb the upward climb from robinsons to gold mountain is among basaltic buttes weathered to fantastic shapes and highly colored or discolored through tho the action of strong solutions the basalt extends to kal 1 d W V jq oil a 44 UTO ego so rp it rj ran look in IV al fr fro a da 00 01 J gal silver spee space will not permit of any description of the horse heaven and other flue fine properties along the great webster dike another monster dylie cuts the country from the east side of mt delano over into anto bullion canyon there is a largo large number of fine properties on the dalre aylm and oils cus to itt it A study of the maps will convince anyone atall atall fa familiar millar with the relation between geological conditions and the occurrence oz 0 wins veins and values that thai the country to the west of marysvale Marys vale presents one of the most inviting fiems for intelligent investment to in unil united ed states 0 0 i GOLD MOUNTAIN DIVISION alighting from the train at sevier station on the R G W R R the observant traver traveler er to gold mountain willm will notice otlee that the rugged andl and broaten bro lien foothills ar are composed of ha ba material As one proceeds west westward warI and enters clear creek canyon he will vill note within a mile or so of gold mountain and to the stranger is a subject of curiosity in teresi and study in some localizes loca lites tho tha basalt caps the rhyolite butin ant in a general argeneral way it merges so gradually into tho the rhyolite that no lau line e of dt da markatoon mar kation is visible contemporary with the great sevier fault and extending westerly the earths crush was profoundly broken or fissured along a line now represented by clear creek canyon and intersected and crossed by the great fracture which once extended from south southwest vet of marysvale Marys vale along the present apex ot of the range through gold mountain and onward to tile north into the Pih vant rang those principal fissures including innumerable parallel fissures were openings ope ninga for the upward flow 0 ot rhyolite and kindred 1 eruptive material arl prior or to the complete solidifying of tho the rhyolite the clear creek fracture reopened and andt basaltic material was forced up through the part partially ialY congealed rhyolite and which explains the blending of the line ot contact beginning a short distance noite bortl of the OZ ei ei aai 4 65 VZ VV V V ai Z 90 ol 01 ya KI S 4 1 I A J 0 t 5 41 4 A I 1 jk ti 0 AV if it J 11 U t 41 1 ra wt 0 av P r a HI as rha of 1 Gota frn N slow 7 I 1 P BA E RIAL ae ck the fact that the gorge has haa been ploughed sloughed hed deep ina in a bed 1 of basalt which as robinsons Robinson 5 ranch it is approached becomes more columnar r in its 10 structure ture the bed bead extends westerly from sevier station a distance of somo gome fourteen mites miles here chere rhyolite becomes tho the country rock and forma the apex of ther rocse the earlier geological geologiC 21 conditions of the mt baidy rilin mineral eiA belt are described in the Maryf Mary sTale fale divi division elon of the subject and to ib i annie laurie see topographical map a belt of birdseye porphyry extends south erly 4 a distance of a mile or two and disappears under tho tha more recent aaers to do the east of the annio annin laurie an enormous enorma 1 belt comes in from froin mt mb Belli bellknap nap and forms the divider divide between RIM kirn berly basin dud and the head of dear creek ano is also so far as exposure is conce rend the east cast local boundary of the birdseye this peculiar porphyry with its dark basz aal fra clUad with almost waua 1 i t 0 A t amia speck s and spots extends westerly over the tiptop divide and down towards fish creek the dip of the magnificent annie laurio vein or dr veins is towards tho the west and on that side aide at a distance of perhaps or feet from the droppings crop pings Is ie a dyke of porphyry entirely distinct from the country variety the locality where the dyke is most moat prominently exposed is on the hillside to the southwest of the blue bird tunnel vl the tiptop divide is the apex of jl a 1 targe large dyke of fa porphyry which occupies a northerly and southerly fissure or line of rj faulting the great sevier ledge with its 3 marvelous wealth traverses this dyke on a southerly strike and upon which the tiptop and other bonanza claims are situated southwesterly from the tiptop the formation changes the birdseye porphyry on 11 the sui surface face at least gives way to rhyolite and tra chite faulting is more conspicuous and explosive volcanic activity more in evidence within this area and well in to wards grand old baldy is situated the fine property of the trappers pride the geol ogy agy of the locality is given by a gentleman intimately associated with the mines and is as follows the country rock is altered which has undergone a series of faulting and thereby tending to make iper to the action of mineralizing mineral izing i eions the faults so far as developments i have determined arc parallel with the veins veini thus f far a r no lateral faulting ha has been t ter ed to the east and southeast of the trap pers pride and directly north of mt belknap is a great field of phonolite nearly all of bilich is highly stained with iron ox ide the locality yields beautiful specimens cimenti ri of nephritic phonolite pho nolito several undeveloped 0 but birt most promising veins ate are opened with short tunnels the decomposed filling pann pan gold in milling quantities in a general way the gold mountain faults dyken and veins trend towards that stupendous uplift represented by baldy and belknap andi and incidentally proves that the malor majority ltv of the lodes are true fis fissures suren gash veins occupying althey as they do shrinkage cracks in the cooled eruptive rock lack the regularity of strike so conspicuous in the vein system of the major portion of the mt 13 baldy aldy region re gion 1 1 it was intended to kutlina the |