Show y f arv ajl HP OF ur MT MT BALDY dalvi RAT TW mi GOL GOLD auld D BELT BY B ay Y J F GIBBS ml a ays fys vales division bi aring complex conditions caused caus edby by uti unusual usual faulting along the foothills on the east and back into the mountains a distance of from three to four miles the geology of odthe I 1 the Marys Mary valo division is easily read its it is clearly evident that at some depth the entire range rangers ais with a brokon braben and faulted sub substructure stricture of quartzite and that it may be credited to the devonian age A small area to the north of 0 the gold run canyon road presents some contradictory evidence the overlying limestone contains fasing credited to an earlier age than the devonian its presence is an enigma and cannot be discussed at this time the preponderance ot of evidence isthan J the area now represented by the mt baldy range and its northern prolongation the pan van mountains between millard and semer counties was waa under the ocean during the devonian age hundreds perhaps thousands ands of feet of sandstone was deposited cited the succeeding lower carboniferous period covered the sandstone with a thick hed of limestone at the close of jhb lower carboni carboniferous ferouse 4 c aw r X K dorph rv aw i we si f 4 Ruo ial 1 I re a JoY 10 NIL NI L i L rite saco st sf co w hakli Hi Kli W Q 0 I 1 nn attl ye eck f 0 w am AV all A lu ex it v S N sliby YIN S a vy r ta lips alij Z WD 3 5 EIA U Z 3 ula fifi orl 1 I r ja 61 w 44 W 1 l aa v j 5 ri 1 A 7 i fc 1 y vi ft OS r X fe tl J rim j V Q j WL lv V 14 r DAT ir A dl qa i J 4 w wa V V I 1 V C n U v V J V 7 I 1 Q IM fa i A g avy te I 1 lal IV r X 2 v jray ir 1 I R A i AI NS P fe abw auw MV topi RAPH 1 CAL AL 11 MAP A P N T BALDY H 7 R it LB ELT E LT aa agent gentle lo upward movement occurred and we the area under discussion tose rose above the thet s surface ace of the ocean where it frem remained alfted dur J leg the enormous lapse of time that inter 1 between th the e closing centuries of the lower carboniferous and well along towards the close of the Tertia ray age when an almost worldwide world wide change of level occurred along the east cast side or of and parallel with ith what is now known as the mt baldy range and its northern prolongation the range rah ge the earths crust crus was fissured from we the surface down to the alfe region of molten rock the fissuring was succeeded succeed od by faulting k and an idea of the tremendous displacement fa may be formed from the statement that deer trail pe peak ak the highest elevation of quartzite is fully feet eat higher than the I 1 valley while the eastern section of the y ia buried beneath hundreds of 0 feet of basalt and other eruptive material the displacement extended northerly a distance h of nearly miles in sevier valley the sandstone so conspicuous along the east side of the mountains is on the cast side of the valley buried under hun dreeby of V tion material this stupendous displacement is known as the sevier fault in the vicinity of marysvale Marys vale a great als fissure on tho the east paralleled the sevier fault and is now marked by b Y a fringe of basaltic foothills and an d volcanic activity 1 must have continued over a long period after comparative quiet reigned r el g ned along the mt baldy range the evidences of which whichard chare are ifould in the mixture of volcanic bombs and debris it iri a belt of oolite bullion Bt illion canyon represents a lateral fault extending westerly from tho the sevier fault the apex of the divide between two mila and bullion is quartzite and is fully 1500 feet foot higher than the quartzite quart zito to the northe north ot of o f bullion creek another area of stupendous displacement exists along the cottonwood fault where deer trail peak rises fully 1000 feet above the quartzite on the ridge to the south of cottonwood the topographical and cross section maps to which the readers attention is invited will serve to illustrate the profound northerly and southerly faulting of the ba sic s ic formation of the lit bit baldy range the teachings of geology prove that the dynamical history of the region to the west 1 and southwest south west of marysvale Marys vale is as fbI follows lows A abarge large area occupied by sandstone with a limestone capping because of the shrinkage of the earths molten interior or because of the accumulation of gases seeking lines of easement ease Went the crust was fissured and broken into enormous fragments or blocks some of the great masses maintained their position but the I 1 larger por tion settled down into the yielding mass of underlying igneous matter from those thase yawning fissures enormous masses of olite and birds birdseye eye porphyry oozed up from the earths melted interior and formed mountain masses masses thousand feet deep again the unstable crust quivered with intense seismic forces the old andrut and but partially healed wounds were opened and new fissures formed in the overlying arup tive m mass ass and gre great dykes of highly mineralized erali zed porphyry now mark the locati location cin and direction dire cdon of many of those ancient rents through the weight of the superimposed super imposed mass of eruptive material the associated tho underlying sandstone sand Mone was altered f to the now familiar quartzite there arc 44 several localities where the sandstone es those agencies and retains its old d time characteristics and insensibly merge T into quartzite as it nears the Ignec igneous lations mat ions the brief period of comparatives comparative quiet which succeeded tho the previous disturbances was broken by another uplift ot of the range and aboh along the central portion extending from gold mountain south a distance of some ten milesa miles a great fissure was formed from the surface face down to the region liquid fire the mighty force which split j the northern portion of theat the mt baldy range 1 also formed lateral fissures extending east erly anti and westerly from thel the great central centra rent those fissures became lines of ease ment for the vast mass chass of magma seeking egress and from molten depths deathe the hot gaseous mud mild flowed upward andl andi formed great dykes of phonolite pho nolito which to day cheerily clinks under the feea of an aa occasional prospector while the eruption of the pho phonolite nolita marks the last throes of nature in the mt alt baldy region subsequent local fissuring assuring of the phonolite occurred and in connection with other fissures already formed became channels for the upward and lateral flow of goldana gol gold dand and silver bearing solutions dons extinct craters fields of dark clark colored tra chite ridges of volcanic breccia dykes and chimneys of obsidian in the phonolite prove that local volcanic vol danic force forced were continued L over a long period after the wide 1 spread erupt eruptive lve activity had ceased the readers attention is now directed ti i i more particularly to the topographical and cross section maps while we investigate the m econ economical 0 1111 cal results of dynamical forces just juslet t described to avoid conff confusion ision the great porphyry dykes only have been mapped and the veins alon along 9 the ille trend of those dykes are prominently eminently pro drawn the cross section shows the deer trail mine occupying a bl blanket contact which i dips clips to the north at about eight or ten degrees and is hidden by overlying debris ln in that locality ideality the owners have blocked bout about a tons of ore having an average value of ten or twelve dollar sper ton about feet distant to the south many car carloads loada afore of ore were shipped and which netted them the owners se several veraa hundred dollars per ton in lead silver and gold it is believed belaev d that the contact derived its filling by solutions 11 from the north where eruption rock is in fil evidence and probably associated with a lateral fault the high grade ore to the south doubtless owed its origin to a ft andary dary movement of solutions which passed through the largo large body of ore leached beached it and transferred the concentrates to the higher portion of the contact higher up on the deer trail escarp escarpments escarpment mento 6 is situ situated atod the lucky boy that years ago yielded a large quantity of high grade mercurial ore the origin of which Is an unsolved problem still higher on the mountain side e is sit bated the once famous pluto cilito like the lucky boy it proved to bo bb a surface deposit dd posit in limestone the ore was almost pure sil ver and with no visible reason for its presence in a locality where conditions aro so unfavorable tiie the first great porphyry dyke that tra verses almost the entire district occurs occur sr about three miles west from the mouth or of cottonwood canyon and occupies the jhb great greata northerly and southerly fault line along this dyke is situated the nelson a vein of gold bearing quartz that projects above the ground like a great wa wall I 1 E the branch vein is strong and its per manenty has been proven it yields silver ana gold i the SUAn standard dard is a monster ledge and yields lead silver and gold almost excle 1 in sulphide conditions on the north end of the dyke is situated the copper belt i to the west of the crystal mine and trending northerly is a great dyke of porphyry that after traversing the marysvale Marys vale section bends northwesterly into the gold mountain district along this dyke Is sit bated that oaf high grade ore and now has exposed a 15 foot vein that averages 20 per ton tile property is being worked ly by pittsburg people and ought to develop into a bonanza down on the bullion creek side the dyke forms tho the hanging wall of the webster a monster vein with great chutes of galena and crystallized lead carrying gold and tile the basalt extends some three to four miles north of the canyon and isalio hounded bounded hy by rhyolite arid and other eruptive rocks 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 U A ia 40 1 V ci 6 aa J 0 i af M C B I 1 ny J I 1 t at 0 q k Phot taut i h arx es t 0 h C clogs 0 f altz R ity 01 Z tie Q 51 11 1 lookin jo g N A fronta fr 0 nt con 0 it wo 0 a 0 0 cany n silver space will not permit of any description of the horse heaven and other fine properties alon along the great webster dyke another monster dyke cuts the country from the east side of mt delano over into bullion canyon there is a large number of fine properties on oil the dyke and contiguous to it A study of the maps will convince anyone at all familiar with the relation between geological conditions and the occurrence of 0 veins and values that the country to the ahe west of marysvale Marys vale presents one of the most inviting fields for intelligent investment to be found in the united states GOLD MOUNTAIN DIVISION alighting from the train at sevier station on the R G W R R the observant traveler to gold mountain will notice that the rugged and broken foothills are composed of basaltic material As one proceeds we westward siward and enters clear creek canyon he will note the fact that the gorge has been ploughed sloughed hed deep in a toed bed of basalt which as robinsons ranch is approached becomes more columnar in its structure the bed extends westerly from sevier station a dis distance tance of some fourteen miles where rhyolite becomes the country rock and forms the apex apes of the range the earlier geological conditions of the mt alt baldy mineral belt are described in the marysvale Marys vale division of the subject arid and to chich the rea reader dar Is it ily ed within a mile or so of gold mountain arid and to the stranger is a subject of curiosity interest and study in some localizes loca lites the basalt caps the rhyolite but in a general way it merges so gradually into the rhyolite that no line of mar kation is yi visible sible contemporary with the great sevier Sc vier fault and extending westerly the earths crust was profoundly broken or ns fis along a line now represented by clear creek canyon and intersected and crossed by tile the great fracture which once extended from southwest of marysvale Marys vale along the present apex of the range through gold cold mountain and onward to the north into the range 4 those principal fissures including innumerable parallel fissures were openings for the upward flow of rhyolite and kindred eruptive material prior to the complete solidifying of the rhyolite the clear creek fracture reopened and basaltic material was forced up through the partially congealed rhyolite and which explains the blending of the line of contact beginning a short distance north of the 7 afi 77 EK i r 77 7 7 7 J 7 77 77 7 7 7 ak V ci 5 4 01 R k 4 q tri r k 2 V AV v Z I 1 I 1 1 4 14 1 10 4 L a T i b 5 10 1 ten ta J 0 cl 0 A al sa V lei CL a V Z zo MA N 0 topographical the aza w Z op z GOL D TAIN DIVISION 0 Z T T BA LD Y N BE L T annie laurie see topographical map a belt of birdseye porphyry extends south erly a distance of a mile or two and disappears under the more recent litle rocks to the east of tile the annie laurio laurie an enormous belt comes in from mt belknap and forms the divide between kirn berly basin and the head of deer creek and is also so far as exposure is conce rend tho east local boundary of the birdseye 1 this peculiar porphyry with its dark baso base andl and freckled ledl wak almo alst st white K specks and spots extends westerly over the tiptop p top divido divide and down towards fish h creek the dip of tile the magnificent annie laurio laurie vein or veins is towards the west and on that side at a distance of perhaps or feet from the droppings crop pings is a dyke dyka of porphyry entirely distinct from tho the country variety tile the locality where the dyke is most p prominently i eminently exposed is on the hillside hill sido to the southwest of tile the blue bird tunnel tile the tiptop divide is the apex of 0 a large dyke of porphyry which occupies a northerly and southerly fissure or line of faulting the great sevier ledge with its marvelous marve loua wealth traverses this dyke on a southerly strike arid and upon which the tiptop and other bonanza claims are situated southwesterly from the tiptop the formation changes the birdseye bird porphyry on tile the surface at least gives way to and tra tr achito chite faulting is more conspicuous and explosive volcanic activity more in evi donee within this area and well in towards grand old baldy is situated the fine alne property of tile the trappers pride the geology of the locality Is given by a gentleman intimately associated with tho the mines and is as follows the country rock is altered which has undergone a series of faulting and thereby tending to make it permeable to the action of mineralizing mineral izing solutions the faults so far as developments have determined are parallel with the veins thus far no lateral faulting has been encountered to th the east and southeast of tho the trappers pride and directly north of mt be belknap is a great field of phonolite pho nolito nearly all of winch is highly stained with iron oxide the locality yields beautiful specimens of nephritic phonolite several undeveloped but most promising veins are opened with short tunnels tile the decomposed filling pans gold in milling quantities in a general way vay the gold mountain faults dykes and veins trend towards that stupendous uplift represented by baldy and belknap and incidentally proves that tile the mIjo minority rity of the lodes are truo true fissures gash veins occupying as they do shrinkage cracks brachs in tile the cooled eruptive rock lack the regularity of strike so conspicuous in the vein system of the major portion of tho the al mt alt baldy region |