Show j 1 Y 6 GEOLOGY EO 11 1 1 0 GY OP 0 F IT r 9 1 B BALDY AL Y GOLD G 0 L BELT T elta B BY Y J F GIBBS pl j fa ahn barring in complex conditions cau caused Eed by aa w unusual faulting anlon along gAhe the foothills on oil the eat eit t and back inton aitho mountains bains a dis vl t tancy I 1 n e ay os iy arom four tryg goo geo k adgy of th divi daviston s lion la Is eastly easily read j it L J ji in i evl doat that thai depth tin entire v ange ds under lad with a broken u arid and i tire of quartzite and J that it ft way may devonian age A a rear sto I 1 thyn orth of tho gold runa run a i canyon road iund nito sonic some contradictory P 0 biltl omo foriss ci joau earlier agg than athali tiro J devonian lt TO t paes presence once is art an virgnia 1 Y cati nuli tymoty jy tye r ot at evidence is thata tha are aie now represented byrth mt ajit prolongation aaion the i minard and ud V f f sa iwler ier wa waun dor the dur r lug ing tho i ager Q perhaps 4 1 of was depos ailed lower carbo fa lod roverud rov erod the sandstone vitha thick ov op J ati all the th e loor carboniferous W f 4 a gentle upward and 1 I 1 x jhb area ea under discussion rose above the surface of the oceail eun whery it remained dur ing the th enormous lapse of time that inter between tho cf the ell edw lower er car carboniferous and well along towards ft i the 06 cibie of we the Tertia ray age when an ap al most teorla wide ch a of gf level idel occurred ahe east side of and f what is now known as the mt baldy range 1 l and its northern pr ane t f range the eartha oart lis crust was fissured from f the surf aco down daian to thi A th the was succeeded hy by faulting and an idea of the tremendous 1 displacement 1 may be formed from the that deer trail leah the of 41 quart quartzite iab is fully fully feet eigher th mi the valley while the eastern of the quartzite is buried beneath hundreds hi indred of ae et of basalt aad a dother an ad other eruptive material the y displacement extended extend bI northerly a distance dM tance it of oft nearly miles rn jn savier valrey valley the said maidstone stone so conspicuous along the east aide 0 or the tint mountains Is ori od the 1 of the valley buried burl e d under hun v crow m ra to riaL thib displacement ments 1 is known aalthe ast the leviev Sevi ec ev faulty inthe vicinity of Mory Mary avale a great fissure on the east cast paralleled Sevier fauntl nad ay now marked by a fringe o basaltic edathil lb andi and 11 have chave conti continued aued over a ilon along period after compa 4 I 1 tic alvo L quiet reigned a long along the mt baldy range the which tare arel are frandin l pi indin vila tho mixture of volcanic lc bombs and debris 1 fir lira a belt of oolite Bu bullion Illon canyon a fatral lat ral taulee c banding westerly 4 f from rom th elsevier eS evier f fault atilt the apex of between two T vvo milo mile and bullion is quart quartzite tite and fully 1500 abt higher than the quartzite to the north of bullion creeh another area of stupendous displacement exists along thel CottUn woodi fault deer vail trail peals peal arises aises 1 1000 0 00 the quartzite taito an fn the south ol 01 0 cottonwood Gott onwood ii 41 tea th e torgi aad 1 cross croas action maps tot the readers s is in cited will serve to to illustrate the profound northerly land and southerly faulting of the basic formation of the mt baw range tedi teachings of 0 oooo prove that the vW awa a V pap h 2 sa pj X choit tho s it e nr iy ay N x s s wa 4 ti N si y 1 4 IV myla 4 rat 1 V ne lye 0 7 07 lit n V I 1 v 0 ov 0 W V I 1 iw A 0 1 P t I 1 vt v t aaa HH r ss 4 4 Z 2 nc s efm mi lt A r M iw w yuil bai UP de lo 10 w ni 1 4 tev ra B iff e ai wf at ralp Is C 4 tu virti att ir abbes aw BES 2 V N SiAI J Y s gg 4 AY al M 7 10 ss Y A yat y a t aw c ST V AT 4 fc X 8 A r s hilll ah s nl se ten 0 A nil ra ak W T i Z n y I 1 Z eat Z Z N 4 laj W c i 4 fa i w A all Z Z 4 SK sa task tw 1 ss 06 aw e at n Sl T A to M kp ff r a nS essl dynamical history of the region to the west and southwest of o marysvale Marys vale is as follows amarge A large area occupied by sandstone with a limestone capping because of the shrink ago of the earths i moten interior or be cause cau vo f th tha e a of basea t lines of easement casement the crust was fissured and broken into enormous fragments 11 or blocks some of 0 the great masses m maintained ain their position buethe larger por tion settled down into the yielding mass of underlying igneous matter prom thase yawning fissures figh ures enormous enor moun of and birds birdseye leye porphyry from the earths melted interior and formed moun tairi masses thousands ov of feet de ep again the clysta quivered with intense seismic forces alib old and but partially healed wounds were opened and 1 new fissures formed in ih the eruptive mass and great dykes of highly mineralized erali zed porphyry now mark the location and direction of many of those ancient rents through the weight of the superimposed super imposed mass of eruptive material the associated heat and in csonko of stron o T underlying 0 sandstone was altered changer ch aai 17 ed to tax the now familiar quartzite thero there ara i several localities where the sands sandstone tolie escaped those agencies agency a is and retains re MIns its old time characteristics and ins o n 91 bl merges into Vs ELS ra it is g n keoua e ous v f foi lations mat riat ions the brief period parloa of compel active culott 7 licht succeeded the previous distri ann bai bailers bailees lees c es was wan broken br olten 1 ay y another the range lange and alow along th alie cent central ial portion 1 efte extending tid ing from gold G old mountain south aa a distance of 0 ame ten milesa a arcati fissure was formed from the surface down awn to tnie the legion OV oj liquid fire the force vach split tho the northern portion of the mb caldy range alao formed lateral fissures extending east or crip J and westerly from tho the great cen central cantrall trall lentil those fissures became lines of easement for tho the vast mass of mag ma seeking hig egress and from molten mollen depths jl the hatt gaseous mud I flowed upward andi formed great dykes of which today cheerily clinic u andr tha fot df an occasional prospector while the ei eruption of of the phonolite litel mareb thelast throes of nn na turo ture in the MU baldy region subsequent local of the occurred and in connection with other fissures already formed became cl channels iannel 1 for the up 1 ward and lateral flow of gold and sliver silver bearing craters wd fields ar of dark colored tra chite ridges of volO atile breccia dykas ind chimneys of obsidian an in the r local volcanic forces were continued aih uL Mover over a long period uffer after tro the wide spread eruptive erupts ve activity had ceased the readers attention is now directed more ore particularly to the topographical and cross section maps while we investigate the economical results of dynamical dynamic ap forens jasd cle described to avoid confusion we great porphyry aylea d Y 1 es only have been mapped mid thea veins along tile vendi of those dykes are j P prominently drawn n vic the cross section shows t tail mine occupying a blanket contact dips clips to the north at about eight or ten degrees andis and is hidden by overlying debris debri ihl ifa that ideality ide allar the owners havo hava backed alx 11 about 15 tons of ore having an avera average ave rago Y value of ten or twelve dollars dallai s per ton about feet distant to the south sout li many m any carload arleada c arl bada of ore ere were shipped and which netted the owners several hundred dollars per ton in lead silver and gold it is believed that the contact derived its filling by solutions from the north where eruption rock roch is in evidence and probably associated with a lateral fault the high grade ore to the doubtless owed its origin to a secondary andary movement of solutions which passed through the large lai ge body of ore beached leached lead lied IV it and transferred the concentrates to tw the higher portion of the cont contact icV higher up on we deer trail escarpment escarp mene is e lapicky boy anat years ars ago yield eda large quantity of high mig grade mer curial ore ora we the origin of is an un I 1 solved problem still higher on the mountain side is sit sif 7 ali the e once famous plumb like hike the lucky bobp it proved to be a surface deposit in it limestone in estone th the e ore wats waa almost pu puro ro sil ver and with no visible reason leason for its presence in afi a locality where wh ere conditions are 4 so unfavorable the first great porphyry dyke that tw tr n Y verses almost the entire district district occurs about three ed mlis miles the mouth oe 0 cottonwood canyon and occupies the great northerly and southerly fault line along this dyke is situated the nelson a vein of gold bearing quartz that projects above the ground like agre atwall the branch vein is strong and its permanency 11 has as been proven it ie ya yields e rh sl silver lver ana gold the standard Is a monster lodge ledge and yields bad silver and gold alm almost josf excle exal 1 y siv elyin in sulphide sul lihU conditions on the north end of the dyke is situated the copper belt 1 to the west of the crystal mine andt and trending northerly is a great dyke of por phyra that after traversing the Marys valEt section bends northwesterly into the gold i mountain mo rt r riat t along this dyke is sit sie V u ate d ural a f high grade ore orb and now has exposed a 15 foot vein that averaged ave avera 0 20 O per ton property lio perty Is being worked by pittsburg peo pic and ought to develop into a bonanza 1 down op the bullion creek side the dyke forms the hanging wall ivall of the webster a j wf monster vein with great chutes of galena y luid crystallized lead carrying gold anil the basalt extends some tareq chiw to four miles north of tho the canyon and is alo alho bounded by rhyolite rhy olito and other eruptive the upward limb climb from robinsons Rouin to gold Momi mountain tain is among basaltic buttes weathered to fantastic shapes and highly colored or discolored discolor ed through the action of solutions solution N cr ot to A ng I 1 ire ll 11 P h 0 bolit t ay aj utonn croas rhyolite e qu i n CT A ill U CIL oliver allver space will not permit of any description of the horse heaven and other fine properties along the great webster dyke another monster dylie cuts the thea country 4 from the alst east side of mt mb delano over into bullion canyon there is a large number of fine properties les on the dyke dyka and contiguous to it A study of tile the maps will convince anyone at all familiar with the relation between geological conditions and the occurrence oi of C veins and values that the country to the west of marysvale Marys vale presents one of the most fields for intelligent investments investment to bo be found in the united states 0 GOLD MOUNTAIN DIVISION alighting C from the train at sevier station on the R G W R RM R the observant traveler to gold mountain will notice that the rugged and broken foothills are composed of basaltic material As one 0 no proceeds westward and enters clear creek canyon he will note within a nille or so of gold mountain and to the stranger is a subject of curiosity interest and study in some tile the basalt rips raps the rhyolite rhy onte but in a general way it merges so gradually into illa no line of de is visible contemporary with the groat great sevier savior fault and tending extending westerly the earths crust artis t was profoundly brol broken or ns fis alan a dihe now represented by clear croell greek canyon and intersected intersect edE and crossed by the groat great fracture which once extended from I 1 rom s southwest ou of marysvale Marys vale valO along the present apex of the range through gold cold mountain and onward to the norths north into the Pa livant rangi range those principal fissures In including chiding innumerable parallel fissures were openings for the upward flow now of rhyolite and kindred eruptive material prior to the complete solidifying of the rhyolite the clear creely creeds frap fracture ture reopened and basaltic basal tid material was forced up through the partially congealed rhyolite and which explains the blending of the line ot of contact ta e t beginning a short distance stanco di north of the T 7 fay 7 7 7 X 4 N 77 t 1 ac tv aa at TL Q 23 1 off v ea its 4 p T ril f 4 V 13 a I 1 14 lo 10 p 0 ko LJ 90 cc q MAXY V LC ab 1 0 0 Y IJ arx AR V 5 01 OLD MOUNTAIN Z T BA L D Y MINE R A L BE LT the alib fact that the gorge has been be en ploughed sloughed hed deep in n a bed of basalt which as robinsons Robin dons ranch is approached becomes more colum 11 nar biar in its structure the bed extends west erly from sevier station a distance of some fourteen nailes where rhyolite becomes tho the country rode and alid farms the apex of the range hange the earlier geological conditions cond eions of the mt it baldy mineral belt are arc described in the marysvale Marys vale valc division of the subject and to bich ohp bealar re alar M r ref exaid annl annie e laurie see topographical topographical ital map a belt of birdseye porphyry y extends southerly a dist distance ance of a mile or two and disappears under tinder the more recent litle rocks to the east cast of the annie laurie an enormous belt comes in from mt belknap and forms the divide between kimberly basin and the head of deer ereo bresk k and ana is also so far as exposure is conce rend the east cast local boundary of the birdseye 11 this peculiar porphyry with its dark base and braak hafl with almost white 41 A specks and spots extends westerly over the tiptop div ikle and down towards fish the dip of the magnificent m z annie laurio laurie coln cin or veins Is tow towards ards the west and on that side at ji it distance ot of perhaps ot or you 00 leet feet froin the cr droppings crop pings gs is a dyke ot of porphyry entirely distinct horn from the country variety the locality where the dyke is most broin prominently ineptly exposed is on the hillside to the southwest of the blue bird tunnel the tiptop divide is the apex of a large L dyke of porphyry which occupies a and southerly sout heily or lino of 0 Y faulting ta the h a great gibat sevier ledge with its maive veloas lons wealth traverses this dyke on a southerly strike ano and upon which tho the tiptop and other benaim claims abins alo ale situated southwesterly froin the tiptop the formation changes the birdseye porphyry on the surface at least gives wily way to Illy olite zand and tia tra chite faulting is more anoro conspicuous i and explosive volcanic activity in ill evidence within this his area and well in to wads grand giand old baldy is 13 situated the fine property of the trappers pride tho the geology ot of tile the locality is 19 given hy by a gentleman intimately associated with the mines and is in as follows the country rock is 19 al eltoro torel which has undergone a series ol of baultin faulting and thereby tending to makert make it pen to the action of mineralizing mineral izing solutions the faults so far as have determined are parallel with the veins thus tar far no lateral faulting has boon encountered to the cast and southeast of the trappers pride and directly north of mt belknap is 19 a groat great L held field of nearly all of bilich is highly stained with iron oxide tile the locality yields beautiful specimens of nephritic phonolite several undeveloped but most promising veins are with 6 1 short tunnels the decomposed decompo sod filling pans pana gold in milling quantities in a rge general way the gold cold mountain faults dykes and veins trend towards that stupendous uplift represented by baldy and belknap and incidentally proves that the majority of the lodes are true fissures gash veins occupying Rs as they do shrinkage aracka in the cooled eruptive rock lack lacic the regularity of |