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ARIZONA GEOLOGICAL SOCIETY

SOUTHERN ARIZONA

GUIDEBOOK II Combined with the

2nd Annual Arizona Geological Society Digest

Edited by L. A. Heindl

Prepared for Field Trips held in connection with Geological Society of America

Cordilleran Secti on 55th Annual Meeting

April 2-6, 1959 Tucson, Arizona

WELC OME T O T HE UNIVERSIT Y OF ARIZONA

The Univ e r s ity of Arizona extends g re eting s and a c o r dial welc ome to the mem­b e r s and gue s t s of the C o r dill e r an Section of the Geologi c al Soc iety of Ame rica in its annual me eting on April 2 to 6, 1 9 59 , and to the Pac ific C oa st B ranch of the Paleon­tolog i c al Soc iety and the Sei smological Society of Ame rica, as soc iated s o c ietie s me eting on the c ampus c oncurr ently .

The Unive r s ity i s ple a s e d to mak� its fac ilitie s available fo r the s e me eting s , and invite s you to vi sit it s various divi sions and to become acquainted with the wo rk being done . The C ollege of Mine s i s out standing fo r its instruc tion, exp e rimentation, and r e s earch in g eology and mine ralogy and in mining and metallurg ic al enginee ring . T he C olleg e ope rate s in clo s e c oope ration with the Arizona Bur eau of Mine s and the United State s Bur eau of Mine s , both of which have offic e s on the c ampu s , and with the C olle g e of Eng ineering .

You may wi sh to visit the Unive r s ity' s s c ientific and othe r laborato rie s and the Arizona State Mus eum, which i s located on the c ampu s and c ontain s out standing c oll ections of mate r ial s pe rtaining to man' s habitation of the Southwe st from p r e ­hi sto r ic time s . The Labo rato ry o f T re e Ring R e s earch i s located in the we st stad­ium building and the Geochronology Laborato ries have their offic e s on T umamoc Hill , we st of Tuc son. The Art Gall e ry of the Fine Arts C ente r ha s many famou s wo rk s of art, including the Samuel H . Kre s s C ollection.

It is my hope that you will have a mo st pleas ant time and a suc c e s sful s e rie s of me eting s and fiel d trip s .

Richard A . Harvill P r e s ident

GREET INGS FROM THE ARIZ ONA GEOLOG IC AL SOC IE TY

T o all partic ipants of the 5 5th Annual Meeting of the C o rdilleran Section of the Geolog i c al Society of Ame r ic a held in Tuc son, Arizona, Apr il 2 to 6, 1 9 59 , the Arizona G e ological Soc iety s ends wel c ome with most co rdial g r e eting s and be st wishe s . Y our p r e s enc e ju stifi e s the offer of our full ho spitality and the coope rative effo rt of membe r s of the Arizona Geolog ical Society who c ontr ibuted g ene rously their time and knowledg e to the preparation of the field trip s and the Guidebook. We hope you will be r ewarded by finding inte r e s t in the g eology of Arizona and the field trip s .

It i s our s inc e r e trust that through thi s meeting and the s e field trip s , we will all g ain a bette r unde r standing and appr e c iation of each othe r, our mutual problems and prog r e s s , and the r eby benefit s o c i ety, the profe s s ion, and each individual .

Walte r E . Heinrichs, J r . Pre sident

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I I [ [ [ [ I I I I I . I [

T h i s G u i d e b o o k i s

d e d i c a t e d t o

B E R T S . B U T L E R

P r o f e s s o r o f G e o l o g y

U n i v e r s i t y o f A r i z o n a

S c i e n t i s t a n d T e a c h e r , I n s p i r i n g a n d

P r o v o c a t i v e G u i d e t o O t h e r s i n t h e

G e o l o g i c a l P r o f e s s i o n

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BERT S. BUTLER: TEACHER-SCIENTIST

Truman H. KuhnDean of the Faculty

Colorado School of Mines

When I was asked to prepare a dedicatory article in recognition of Bert S. Butler,my immediate reactions were varied and apprehensive. First, I considered the taskbefore me a compliment, since there is the implication that I am able to recordcreditably those scholarly and personal traits of Dr. Butler that have led him to adistinguished career in the geological sciences. Second, I reacted to the underlyingidea that to write of Dr. Butler is also a recognition for me, a recognition in thesense that as author I will hereafter be connected with an illustrious name in science.Consequently, in all humility, I alert my colleagues to the central point in this essay:we are concerned not with style, mechanics, or structure, but with B. S. Butler:teacher- scientist.

Over the past half century, the world has been undergoing a series of revolu­tions - - some silent, other s quite voluble - - in government, law, religion, andscience. The silent revolution in science is characterized by the subfde tempo ofresearch, discovery, development, and resulting progress. Similarly, in politicalhistory, we have been living in an era of constant change, upheaval, and revolution.The course of history in the twentieth century is marked by particular individualsacting as milestones in civilization's movement toward a changed, if not better,existence. Placed in the matrix of their traditional and intellectual topography,many of these political individuals stand out in sharp relief as dramatic catalystsand motivators of progress or destruction.

The scientists, though lacking this ,=ssential flair for the dramatic, have intheir silent method stockpiled a store of knowledge that can prove destructive orprogressive, contingent upon the application of their discoveries. And like thepattern in political history, the course of scientific progress can be plotted by theefforts of particular individuals. To the layman, in general, the dedicated teacheror solitary scientist represents an enigma, for here is a person who se entire phil­osophy of life is based on the premise that thinking man must distinguish himselfwith activities that are consistent with his attributes. An acceptance of this premisefrequently carries with it the misapprehension that the teacher or scientist hasvoluntarily been abstracted from society in general and has selected a way that, atbest, will reward him with minimum. security, little dramatic expression, and minuterecognition. Clearly, security, drama, and recognition -- all basic human needs -­mean different things to different people; further, to the teacher-scientist these re­quirements may be translated in terms that express a philosophy of life based onsacrifice.

Who among us has not consciously felt the security provided by the discoverythat knowledge resides in the stillness and in the activity of natural phenomena?Who among us has not felt the flush of pleasure that flows from a particular discoveryor from a classroom of students whose silent enthusiasm is later expres sed by theiraccomplishments? Finally, what greater recognition accrues to man than to have itsaid that by his actions he contributed? Explicit in the career of B. S. Butler isthis sense of dedication to the service of his profession for the betterment of civili­zation.

Bert S. Butler was born in Gainsville, New York on March 30, 1877 and com-

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pleted his unde rg raduate deg r e e at C ornell Unive r sity in 1 9 0 5 . Sub s equently, he r e ­mained a t C ornell f o r two yea r s a s a memb e r o f the g eology department while c om­pleting hi s master ' s deg r e e . Later in his c a r e e r , in recognition fo r hi s c e a s ele s s c ontributions to the mine ral s c ienc e s , the C olo rado School of Mine s , in 1 9 28, c on­fe r r e d on him the honorary deg r e e , Doctor of Scienc e . T e rminating hi s a s s o ciation with C o rnell Unive r sity in 1 9 0 7 , he beg an a s ignific ant period of r e s earch activity with the U . S. G e ological Survey, an a s s o c iation that la sted until 1 9 2 0 . During hi s work with the G e ologi c al Survey, D r . B utl e r g ained exp e rienc e and p racti c e , g rew in hi s field of s tudy, and moved upwar d thr ough the variou s levels of r e sponsibility. F rom 1 9 0 7 to 1 9 09 , he was a j unior g eolog i st ; from 1 9 09 to 1 9 1 1 , an a s s i stant g eo ­log i st ; and in 1 9 1 9 , he wa s p romoted to g e olog i st, in which c apac ity he s e rved until 1 9 20 . All through this long s ervice with the G eologic al Survey, D r . Butle r c on ­ducted many significant studie s o f permanent value, among them the highly ac claim e d r ep o rt o n o r e dep o s its o f Utah.

In 1 9 20 , he applied his vas t knowl e dg e and expe r ienc e to the miner al s industry in his c apacity as g eologist fo r C alumet and Hecla C onsolidate d C oppe r C ompany. Unde r the dir e c tion of L. C . G raton, D r . Butl e r made a spec ial s tudy of the C alumet and Hecla mine ral holding s . In 1 9 24, at the c onclu s ion of hi s a s signment in industry, he again j oine d the U . S. G e ological Survey and, in c ollaboration with othe r g eolo ­g i s t s , p r epared a c ompr ehens ive r eport o n c opp e r dep o s it s in Michigan.

A s ervant to hi s p rofe s sion, D r. Butl e r then left Michigan fo r C olorado wher e , unde r fede ral and s tate s upport, h e dir ected a tho rough s tudy o f the o r e d e p o s its of the southe rn Rocky Mountain region and the C olorado Plateau. Not c ontent with an exec utive role in directing the o re - depo s it studi e s , he g ave spec ial pe r sonal attention to the C limax molybdenum depo s it s and othe r dep o s its of the Mo s quito Rang e . T he s e exploratory activitie s have obviously r e sulte d in extens ive mine ral developments who s e ec onomic and s trateg ic impact was felt far beyond the national boundarie s .

Hi s affiliation with the Unive r s ity of A r izona began in 1 9 2 7 . B a s e d on an active field exp e r ienc e of twenty year s , the knowl edg e B. S. B utle r b roug ht into the clas s ­r oom p roved to b e a sourc e o f awe , admiration, and inspiration for hi s c olle ag u e s and for the many s tudents who have pas s e d through hi s stimulating c ou r s e s . Not e ­worthy i n his car e e r a s teache r i s the integ rity with which h e s earche d, evaluate d, and c oncluded. A s eeker of the truth, by example he ins tilled in hi s s tu dent s tho s e p rincipl e s nec e s s a r y fo r the ethical bas i s o f a scienti s t : a n ac curate c ollection of fac t s ; an accurate and timely report of the facts ; an awar ene s s of human fallibility. R e c ognizing hi s r e spons ibility a s a teache r-guide, D r . B utl e r embrac e d a philo s ophy of teaching that int e rp r eted g e ology in refe r enc e to unde rlying prin c iple s . T o him, the c ut and dried fac t s r ep r e s ented only a g o o d beg inning ; more important we r e the implications of the s e facts and thei r r elationship s to s c ientific law.

Almo st ten yea r s ago, D r . B utler , in his memo riam to P rofe s s o r W aldemar Lindg r en, stated that " honor s in s c ienc e u sually fall about whe r e hono r s a r e due . " If I may b e p e rmitted to do so , turning this particular statement to the c a r e e r of D r . B utl e r i s n o t difficult. As head of the Department of Geology of the Unive r s ity of Arizona from 1 9 3 1 to 1 94 8 , he began drawing attention to, and r e c ognition fo r , hi s c ontribution s in the cla s s room and in the field. His American Ins titute of Mining Eng ine e r s ' activitie s have been aim e d towar d a r e evaluation of acc epted c onclu sions and a s timulation of p rog r e s s ive thinking in the earth sc ienc e s . In 1 94 7 , the Society of E conomic G e ologi s ts s ingled him out fo r the highe s t r e c ognition in hi s field; the P enr o s e Medal was c onfe r r e d on B e rt S . B utle r " fo r outstanding c ontributions to the knowle dg e of the g eology of metallic o r e depo s it s . " Furthe r r e c ognition of his

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statur e i s evidenc ed in his " s ta r r e d" inclu s ion in Ame rican Men of Sc ienc e , a Inute te s tiInony of the judgInent of othe r Am e rican s c i enti sts .

D r . Butl e r ha s pe rInanently r e c or de d hi s naIne in the r oll s of s c ienc e through the s e honor s ; howeve r , anothe r fac et of the pe rInanency of hi s efforts is expr e s s e d in hi s extens ive publi shing r e c o rd and in the influenc e h e has b:t"ought to bear on hi s s tudent s .

One has but to view the bibliog raphy o f D r . Butl e r to a r r ive at SOIne inte r e s ting c onclu s ions. Fir s t, one s e e s that a good po rtion of the North AIne r ic an C ontinent s e rved a s his field laborato ry. Second, his publishing r e c o r d, detailed els ewhe r e in thi s Guidebook, i s a c anon Inarked by alIno st a half- c entury o f Ineaningful c on­tribution s . P ro ductive s c holarship in our univer sitie s is g enerally viewed as an indic ation of ac adeInic curio s ity, c onteInporaneity, and profe s s ional g rowth. Alto ­g ethe r too often, we encounte r the p roduc ing s c holar liInited by a peak-production p e riod, after which he tends to veg etate in the twilight sluInbe r s of acadeInic, c on ­tented bor e doIn. D r . Butl e r ' s publication r e c o rd, howeve r , r eveal s a patte rn o f c ontinuity, a pattern that i s an ins ight t o hi s c e a s ele s s curio sity, c onteInpo raneity, and g rowth.

W ithout a doubt, D r . Butle r ' s stature in the profe s sion c ould endure thr ough the r e c ognition his fellow scienti s t s have ac c orded hiIn and on the ins c rib e d Inonu­Inent of hi s r e s earch effo rts . However , hi s plac e in the hi story of Am erican s c ienc e i s a s sured through an activity that has a far g reate r influenc e than eithe r awards o r publication s . B . S . B utle r wa s a teache r . Hi s reInarkable c apacity for wa rInth and inte r e s t in hi s student s wa s cOInpleIn ente d by the inspiration he s tiInulate d aInong young teache r s . Hi s role as teache r - s c i entis t wa s balanc e d by a g entleInanly attitude that ha s endeared hiIn to tho s e of us who enj oyed even the slighte s t p e r sonal r elation­ship with hiIn.

Through the year s at the Unive r sity of Arizona, he touched and s tiInulated the Ininds of hundr e d s of young people who have c a r ried hi s e rudition all ove r the wo rld. T hrough his Inany student s , D r . Butle r ha s an eternal plac e in s c ienc e , for , like cur r ents and wave patte rns, hi s influenc e as a teache r will c ontinue whe reve r hi s s tudent s g o . P e rhap s the Ino st s ingular feature in hi s entir e c a r e e r i s the fact that he neve r c ea s e d to be a s tudent. At hOIne, in the field, in the s eIninar rOOIn, o r in the labo ratory, he wa s a cOInplete Inan; for he was c onstantly studying , thinking, and g iving .

D r . Butl e r Ina rried Mis s Loretta B e rg en on Dec eInb e r 24 , 1 9 2 8 . M r s . Butl e r i s ke enly appr e c iated aInong D r . Butl e r ' s s tudents and a s s o ciate s for he r kindly fo rthrightne s s and deep inte r e s t in their faInilie s and c a r e e r s . In 1 9 57 Dr. and M r s . B utl e r e stablished at the Unive r s ity of Arizona a scholar ship fund fo r g raduate s tudy in g eology. The B e rt S. B utl e r Scholar ship s will be additional Inil e s tone s in the p r og r e s s of s cienc e ; aInong the recipients ther e will be Inen to c a r ry on a tradition of schola r s hip founded on the intelle ctual attitude s of an honorable teache r ­s c i enti s t.

At the c onclus ion of thi s 5 5th annual Ineeting of the C o rdilleran Section of the G eolog ical Society of Ame rica, we will dispe r s e to our various caInpu s e s and occu­pations to c ontinue our wo rk. W ith u s we will take the cOInfo rt and pleasure th.at flow froIn the knowledg e that we w e r e in the p r e s enc e of the g ra c e , the charIn, and the exeInplary hUInility of an out s tanding c olleague. B e rt S. Butl e r will endu r e b e c au s e his accoInplishInents a r e ete rnal Inarks in the hi s to ry o f AIne rican s c ientific p r og r e s s and because he wa s a teache r - s cientist endowe d with a s inc e r e g entleInanly warInth.

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P U B LI C A TIO N S BY B . S . B U T L ER

1909

(with Tarr, R. S.), Areal geology, in The Yakutat Bay re­gion, Alaska: U. S. Geol. SurveYProf. Paper 64, pt. 2, p. 145-178.

Pyrogenetic epidote: Am. Jour. Sci., 4th ser., v. 28, p. 27-32.

1911

Geological clas sification of copper deposits: U. S. Geol. Survey Mineral Resources U. S. , 1910, pt. I, p. 159-163.

(and Schaller, W. T. ), Thaumasite from Beaver C ounty, Utah: Am. Jour. Sci., 4th s er., v. 31, p. 131-134.

(and Schaller, W. T. ). Thaumasite from Beaver County, Utah: Zeit schr. Kryst. , v. 49, p. 236-238.

(Ab s . ): Was hington Ac ad. Sci. Jour. , v. I, p. 37.

1915

(and McC a s key, H. D. ), Copper ores of the New London mine: Am. Inst. Mining Engineers Tran s., v. 49, p. 284-291.

(and Loughlin, G. F.), A rec onnais sance of the C ottonwood­American Fork mining region, Utah: U. S. Geol. Survey Bull. 620, p. 165-226, map.

Potash in c ertain copper and gold ores: U. S. Geol. Survey Bull. 620, p. 227-235.

Relation of ore deposits to different types of intrusive bodie s in Utah: Econ. Geology, v. 10, p. 101-122.

(Abs.): Washington Acad. Sci. Jour., v. 5, p. 407-408.

1916

(and Heikes, V. C . ), Notes on the Promontory district, Utah: U. S. Geol. Survey Bull. 640, p. 1-10.

(and Schaller, W. T.). Beaverite, a new mineral: Wash- 1917 ington Acad. Sci. Jour., v. I, p. 26-27.

(and Schaller, W. T.). Some minerals from Beaver C ounty, Utah: Am . Jour. Sci., 4th ser. , v. 32, p. 418-424.

1912

(and Schaller, W. T. ). Some minerals from Beaver C ounty, Utah: Zeit schr. Kryst., v. 50, p. 114-119.

The Morenci-Metcalf district (Arizona): Denver, Mining Sci. , v. 65, p. 154.

Geological cla s s ification of copper deposits: U. S. Geol. Survey Mineral Resourc e s U. S., 1911, pt. I, p. 257-262.

(and Gale, H. S. ). Alunite; a newly dis covered deposit near Marysvale, Utah: U. S. Geol. Survey Bull. 511, 64 p.

(Abs.): Washington Acad. Sci. Jour., v. 2, p. 193.

1913

Notes on the San Francisco region, Utah: U. S. Geol. Survey Bull. 529, p. 197-199.

Occurrence of c omplex and little known sulphates and sul­pharsenates as ore minerals in Utah: Econ. Geology, v. 8, p. 311-322.

Geology and ore deposit s of the San Francisco and adjacent distric t s , Utah: U. S. Geol. Survey Prof. Paper 80, 212 p. , map.

1914

(Abs.): Washington Acad. Sci. Jour., v. 4, p. 222-223.

Geology and ore deposits of the San Francisco and adjac ent district s , Utah: Econ. Geology, v. 9, p. 413-434 and 529-558, map.

Notes on the Unaweep copper district, Colorado: U. S. Geol. Survey Bull. 580, p. 19-23.

(and McCaskey, H. D. ). C opper ores of the New London mine: Frederick C o., Maryland.

(and McCas key, H. D. ) , Copper ores of the New London mine: Am. lnst. Mining Engineers, Bull. 91, p. 1681-

1688.

(and Schaller, W. T.). Magnesioludwigite, a new mineral: Washington Ac ad. Sci. Jour. , v. 7, p. 29-31.

(with Wells, R. C . ), Tungstenite, a new mineral: Wash­ington Acad. Sci. Jour., v. 7, p. 596-599.

1909 to 1911

(and Siebenthal, C. E. ), Silver, copper, lead, and zinc in the C entral States: U. S. Geol. Survey Mineral Re­sources U. S., 1908, pt. 2, p. 587-643; 1909, pt. 2, p. 495-531.

1909 to 1918

C opper: U. S. Geol. Survey Mineral Resourc e s U. S. , ann. report s .

1919

(with Dunlop, J. P.). Silver, copper, lead, and zinc in the C entral States in 1918: U. S. Geol. Survey Mineral Re­sourc e s U. S., 1918, pt. I, p. 59-125, Oc tober 31.

Relation of ore deposit s to thru st faults in the c entral Wasatch region, Utah: Econ. Geology, v. 14, no. 2, p. 172-175, 1 pI. , 1 fig. , March-April.

Ore deposit s of Utah: Eng. Mining Jour. , v. 108, p. 605-611 and 641-645, 15 figs., October 11 and 18.

Primary (hypogene) sulphate minerals in ore deposit s: Econ. Geology, v. 14, no. 8, p. 581-609, 2 figs., December.

1920

(and Loughlin, G. F., and others). The ore deposit s of Utah: U. S. Geol. Survey Prof. Paper Il l , 672 p., 74 figs . , 57 pIs., map.

1923

(and others), Dis c u s s ion of the deposits of native copper (abs.): Eng. Mining Jour. Pre s s , v. 115, no. I, p. 27-28, January 6.

A suggested explanation of the high ferric oxide content of limestone contact zones: Ec on. Geology, v. 18, no. 4, p. 398-404, 1 fig., June-July.

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1927

Some relations between oxygen minerals and sulphur min­erals in ore deposits: Econ. Geology, v. 22, no. 3, p. 233-245, 1 fig. , May.

1929

(and Burbank, W. S. , in collaboration with Broderick, T. M. , G raton, L. C., Hohl, C. D., Palache, Charles, Scholz, M. J., Wandke, Alfred, and Wells, R. C. ), The copper deposits of Michigan: U. S. Geo!. Survey Prof. Paper 144, 238 p., 18 figs., 75 pIs., maps.

(and Burbank, W. S.), Relation of electrode potentials of some elements to formation of hypogene mineral de­posits: Am. Inst. Mining Metal!. Engineers Tech. Pub. 166, 15 p. , 1 fig., February; Trans. 1929; Year Book, p. 341-353, 1 fig.

Relation of the ore deposits of the southern Rocky Moun­tain region to the Colorado Plateau: Colorado Sci. Soc. Proc. , v. 12, p. 23-36, 1 p!., map.

1930

(with Sing ewald, Q. D.), Preliminary geologic map of the Alma mining district, Colorado: Colorado Sci. Soc. Proc. , v. 12, no. 9, p. 295-308, 3 figs.

(and Vanderwilt, J. W.), Geologic relations in Climax molybdenum district, Colorado (abs.): Pan Am. Geolo­gist, v. 53, no. 4, p. 316, May.

1931

(with Singewald, Q. D. ), Preliminary report on the geology of Mount Lincoln and the Russia mine, Park County, Colorado: Colorado Sci. Soc. Proc., v. 12, no. 12, p. 389-406, 3 figs., 2 pIs.

(and Vanderwilt, J. W. ), The Climax molybdenum deposit of Colorado: Colorado Sci. Soc. Proc., v. 12, no. 10, p. 309-353, 2 figs., 1 pl.

The cooperative geological survey in the State of Colorado, being a 1930 progress report: Mines Mag., v. 21, no. 4, p. 21-23, April.

1932

Influence of the replaced rock on replacement minerals as­sociated with ore deposits: Econ. Geology, v. 27, no. 1, p. 1-24, 8 figs., January-February.

Recent work of the United States Geological Survey in Colo­rado (abs. ): Geol. Soc. America Bull., v. 43, no. 1, p. 166-167, March.

1933

(with Sing ewald, Q. D.), Suggestions for prospecting in the Alma district, Colorado: Colorado Sci. Soc. Proc., v. 13, no. 4, p. 89-131, 7 figs. , map.

(and Vanderwilt, J. W. ), The Climax molybdenum deposit, Colorado, with a section on history, production, metal­lurgy, and development by Charles William Henderson: U. S. Geol. Survey Bull. 846, p. 195-237, 5 figs., 17 pIs. incl. geol. map.

Summary, Pt. 1 of Ore deposits related to stratigraphic, structural, and igneous geology in the western United States: Ore deposits in the Western States (Lindgren volume), Am. Inst. Mining Metall. Engineers, p. 198-240, 9 fig s.

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Report on the cooperative geological survey in Colorado for the year 1932: Mining Year Book, Colorado Mining Assoc., p. 3-5.

Ore deposits of the United States in their relation to geo­logic cycles: Econ. Geology, v. 28, no. 4, p. 301-328, 7 figs. , June-July.

1934

Public geological surveys and education (abs.): Assoc. Am. State Geologists Jour., v. 5, no. 2, p. 8, April 1.

1935

Public geological surveys and education (with discussion): Am. Inst. Mining Metall. Engineers Trans. , v. 115 Mining geology, p. 443-444; discussion p. 452-459.

1936

High temperature mineral as sociations at moderate to shallow depth: Econ. Geology, v. 31, no. 1, p. 115-118, January-February.

(with Sing ewald, Q. D.), Structure and mineralization along the London fault of Colorado: Am. Inst. Mining Metall. Engineers Tech. Pub. 754, 18 p. , 4 figs. incl. geol. map.

(Abs.): Mining and Metallurgy, v. 17, no. 359, p. 546, November.

1937

(Abs. ): Year Book, 1936, p. 72-73, January.

(Abs. ): Am. Inst. Mining Metal!. Engineers Trans. , v. 126, p. 426-441, 4 figs. incl. geo!. maps.

Copper deposits of different ages (abs. ): Geo!. Soc. Ame­rica Proc. 1936, p. 312-313, June.

(and Wilson, E. D.), Some Arizona ore deposits; Pt. 2, Mining districts, Structural control of the ore deposits at Tombstone, Arizona (abs. ): Econ. Geology, v. 32, no. 2, p. 196-197, March-April.

1938

Copper mining in North America; Pt. 2, Geology of copper deposits of North America: U. S. Bur. Mines Bul!. 405, p. 37-85, 2 pIs., index and geo!. map, 9 figs., geo!. sketch maps.

(and Wilson, E. D., and Rasor, C. A. ), Geology and ore deposits of the Tombstone district, Arizona: Arizona Bur. Mines Bull. 143, Geol. ser. 10 (Arizona Univ. Bull. , v. 9, no. 1), 114 p., 26 pIs., in supplement, 2 in Bull. inc!. geol. maps, 6 figs. incl. index map, January 1.

(and Wilson, E. D.), Some Arizona ore deposits; Pt. 1, General features: Arizona Bur. Mines Bull. 145, G eol. ser. 12 (Arizona Univ. Bull. , v. 9, no. 4), p. 9-25, 3 pIs., incl. index and geol. maps, 4 figs. , October !.

(and Wilson, E. D.), Some Arizona ore deposits; Pt. 2, Mining districts, Clifton-Morenci district: Arizona Bur. Mines Bull. 145, Geo!. ser. 12 (Arizona Univ. Bull. , v. 9, no. 4) , p. 72-80, 4 pIs. inc!. geo!. map, 1 fig. , October 1.

(and Wilson, E. D.), Some Arizona ore deposits; Pt. 2, Mining districts, Bagdad mine, Eureka district: Arizona Bur. Mines Bull. 145, Geol. ser. 12 (Arizona Univ. Bull., v. 9, no. 4), p. 98-103, 2 pIs. incl. geo!. map, 2 fig s., October !.

(and Wilson, E. D. ), Some Arizona ore deposits; Pt. 2, Mining districts, Structural control of the ore deposits at Tombstone, Arizona: Arizona Bur. Mines Bull. 145, Geol. ser. 12 (Arizona Univ. Bull. , v. 9, no. 4), p. 104-110, 3 pls. incl. geol. map, October 1.

1939

(Review of) Geology of the "Que starr molybdenite deposit, Taos County, N. Mex. , by J. W. Vanderwilt, 1938; Childs-Aldwinkle mine, Copper C reek, Ariz. , by T. H. Kuhn, 1938; and The Mammoth mining camp area, Pinal County, Ariz. , by Nels P. Peterson, 1938: Econ. Geology, v. 34, no. 3, p. 347-351, May.

Memorial to Raymond Jackson Leonard (1887 -19 37): Geol. Soc. America Proc. 1938, p. 153-155, 1 pl. port. , May.

1941

Mining geology: Mining and Metallurgy, v. 22, no. 410, p. 58-64, illus. incl. index map, February.

(with Sing ewald, Q. D. ), Ore deposits in the vicinity of the London fault, Colorado: U. S. Geol. Survey Bull. 911, vi, 74 p. , illus. incl. index, geol. maps.

1942

Some inter-relations of structure, mineralogy, and as­sociations with intrusive bodies in ore deposits, in Newhouse, W. H. , ed. , Ore deposits as related to structural features: p. 3-5.

(and Wilson, E. D. ), Ore deposits at Tombstone, Arizona, in Newhouse, W. H. , ed. , Ore deposits as related to structural features: p. 201-203, illus. incl. index map.

x

1943

(with Calkins, F. C.). Geology and ore deposits of the Cottonwood-American Fork area, Utah, with sections on history and production by V. C. Heikes: U. S. Geol. Survey Prof. Paper 201, x, 152 p., illus. (part in separate box) incl. index, geol. maps.

1944

Exploration for ore deposits, viewpoint of education and training (abs. ): Econ. Geology, v. 39, no. 1, p. 88, January-February.

1949

Setting of Arizona in Cordilleran structure (abs. ): Geol. Soc. America Bull. , v. 60, no. 12, pt. 2, p. 1877, December.

1950

A tribute to the early workers in Colorado, in Applied geol­ogy, a symposium: Colorado School of Mines Quart. , v. 45, no. lB, p. 193-195, January.

Metasomatic alteration along mineralized veins, in Applied geology, a symposium: Colorado School of Mines Quart. , v. 45, no. lB, p. 275-279, January.

(Discussion of alteration and its application to ore search), in Applied geology, a symposium: Colorado School of Mines Quart., v. 45, no. lB, p. 284 and 342-343, January.

Memorial to Waldemar Lindgren (1860-1939): Geol. Soc. America Proc. 1949, p. 177-196, port. , June.

1956

Mineralizing solutions that carry and deposit iron and sul­fur: Mining Engineering, v. 8, p. 1012-1016, October.

L

l

T A B L E O F C O N T E N T S

PREFAT ORY SEC TION

P r e s ident s ' M e s sag e s . . . . . . . . . . . . . . . . . . . . . . . ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ii D e dication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . • . . . . . . . . . . . . . . . . . . . . . . . . . . iii B e rt S. Butl e r : T eache r - Sc ientist . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . iv

T ruman H. Kuhn Publications by B . S. Butl e r . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . viii Arizona Geolog ical Society Offic e r s and Field T r ip and Guidebook C ommittee s . . . . . . . . . . . . . . . xiv Acknowledgments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xv

1 . Viking rocket photography o f Arizona, C alifornia and no rthern Mexico we st of Tuc s on, Arizona . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . • . . . . . . . . . . . . . . . xviii Thomas W. Mitcham

ARTIC LES

2 . Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

L. A. Heindl 3. Sedimentational hi sto ry of southeastern Arizona . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Willard D. Pye 4. Precambrian rocks of southeastern Arizona . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 2

John F . Lance 5 . G e ochemical dating of igneous and metamorphic rocks in Arizona . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 6

Paul E . Damon 6. C ambrian and Ordovic ian systems of southea stern Arizona . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 1

Robert G . Dickinson 7 . Silurian and Devonian sy stems of southeastern Arizona and southwe stern New Mexico . . . . . . . . . . 2 5

Willard D . Pye 8. Mi s s i s s ippian system of southeastern Arizona . . . . . . . . . . . . • . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 1

Georg e C . Thomas 9. Pennsylvanian system of southea stern Arizona . . . • . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

K. C . Havenor 1 0 . Marker zon e s in the Pe rmian formations of southern Arizona . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

Donald L. B ryant 1 1 . C retaceous system of southeastern Arizona . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 3

William B . F e rgus s on 1 2 . Chaotic breccia s in the Tuc son Mountains , Arizona . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49

John E . Kinnison 1 3 . T ertiary depo sits in southern Arizona . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58

Paul A. Wood 14. T e st hol e s in southern Arizona valleys . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62

Phillip W . Johnson 1 5. Paleo zoic stratig raphy of the W ate rman Mountains , Pima C ounty, Arizona . . . . . . . . . . . . . . . . . . . 67

Neal E . McClymonds 1 6 . Precambrian and Paleo zoic s edimentary rocks on the Papago Indian Re s e rvation, Arizona . . . . . . 77

Neal E . McClymonds 1 7 . Igneous rocks of the Basin and Rang e provinc e in Arizona . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 5

Spenc e r R . T itley 1 8 . Structure of B a s in and Rang e provinc e in Arizona . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89

Eldred D. Wil son and Richard T . Moo r e 1 9 . G eology of the Santa C atalina Mountains . . . . . . . . . . • . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 0 7

Robert L. DuBois 20 . Petrog raphy and structure of a part of the gneis s ic c omplex of the Santa C atalina

Mountains . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 1 7 Robert L . DuB o i s

2 1 . The Empire Mountains , Pima C ounty, Arizona . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 2 7 F . W . Galbraith

2 2 . Volcanic g eology of the northern C hiricahua Mountains . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 3 5 Evans B . Mayo

2 3 . Some g e ologic featu r e s of the Drag oon quadrangle, Arizona . . . . . . . . . . . . . . . . . . . . . . . . . . • . . . . . 1 39 John R . C ooper

24. Structure of the Saginaw Hill area, Tuc son Mountain s , Arizona . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 146 John E. Kinnis on

2 5 . G eology of the San Xavie r Indian R e s e rvation, Arizona . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 5 3 L . A. Heindl

xi

2 6 . C rate r s of the Pinacate s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 6 1 F . W . Galbraith

2 7 . C ollap s e depre s sions of the Pinacate volcanic field, Sonora, Mexico . . . . . . . . . . . . . . . . . . . . . . . . 1 6 5 Richard H. Jahns

2 8 . Structu r e and o r e depo sits o f the e a s t s ide o f the Sier r ita Mountains , Arizona . . . . . . . . . . . . . . . . 1 8 5 Willard C . Lacy

29 . Pyrometasomatic depo s its at the Mine ral Hill and Daisy mine s . . . . . . . . . . . . . . . . . . . . . . . . . . • . . 1 9 3 F . D . MacKenzie

30 . Pyrometasomatic deposits at San Xavier mine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 9 5 G . W . Irvin

3 1 . Pyrometasomatic depo sits at Pima mine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 9 8 J . A. Journeay

32. Some g e ologic feature s of the Mis sion c oppe r depos it . . . . . • . . . . . . . . . . . . . . . . . . . • . . . . . . . . . . . . 20 1 Kenyon Richard and Jam e s H. C ourtright

3 3 . Dis seminated depo sits a t the E sp e r anza c oppe r mine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 0 5 Har rison A. Schmitt, Donn M . Clipping e r , William J . Roper, and Harvey Toombs

FIELD TRIP ROAD LOGS

I. Structu r e and ore depo sits of the east Sierrita ar ea, Arizona . . . . . . . . . . . • . . . . . . . . . . . . . . . . . . . 207 Leade r s : Willard C . Lacy and Spenc e r R. T itley

II. Stratig raphy of the Wate rman and Silve r B ell Mountains . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 1 3 Leader s: Neal E. McClyrnonds, Harry G . Page , and Charl e s W. Hayne s

III. G e ology of the Santa C atalina Mountains . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 1 9 Leade r : Robe rt L . DuB o i s

I V . C haotic breccia s i n the Tuc son Mountains . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 2 5 Leader s: John E . Kinnison and Jame s H . C ourtright

V. G ene ral geology of southeastern Arizona . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 227 Leader s : Evans B . Mayo and W illard D. Pye

VI. Volc anic c rate r s of the Pinacate Mountains , Sonora, Mexico . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 5 3 Leade r s: F . W . Galbraith, L . A . Heindl, and G. G . Syk e s

MISCELLANEOUS ITEMS

C atalog of principal s edimentary formation nam e s in southe rn Arizona and northe rn Sonora . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 74 W illard D. Pye

R eferenc e s c ited . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 8 2 B u sine s s and profe s s ional directo ry . . . . . . .. . . . . . . . .. . .. ... . . . .. . . . . . .. . . ... . .. . Following 2 9 0

ILLUSTRATIONS ( Short T itl e s)

D r . B e rt S. Butl e r .. . . . . . . . . .. . . . .. ... . .. . . ... .. .. . . . .. .. . .. .. . . ... . . . ... . .. . ...... . . ... . v

l 1 . U. S. Navy Viking rocket photograph ac ro s s southwe stern Arizona .. . . . . . . . . . . . . . . . . . . . .. . . . xvi lAo T ransfer r ed interpretation of figure 1 . .. . . . . .. .. .. .. ... . . . . . . . .. . . . . . . .. . .. ... .... ..... .. xvii _

2. Index m ap of southe rn Arizona showing distribution of s ome maj o r rock typ e s . . . . . . . . . . . . . . . . . xx 3 . Sug g e sted cor relations of C ambr ian and Ordovician strata, Arizona to New Mexico . . . . . . . . . . . . 2 3 4 . Index Inap and tentative correlation of C retac eous rocks, s outheastern Arizona . . . . . . . . . . . . . . . . 44

5A. C ro s s section of Tuc son Mountain chao s at C at Mountain, Tuc son Mountains , Arizona . . . . . . . . . . 48 5B . C ro s s s ection of Tuc son Mountain chao s south of Gate s Pass , Tuc son Mountains, Arizona . . . . . . 5 1

6 . Tuc son Mountain chao s at C at Mountain, Tuc son Mountains, Arizona . . . . . . . . . . . . . • . . . . . . . . . . . 5 3 7 . G e ologic map and c r o s s section, W ate rman Mountains, Arizona . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 6 8 . Photog raphs o f south-c entral a n d easte rn Waterman Mountains , Arizona . . . . . . . . . . . . . . . . . . . . . . 69 9 . C o r r elation between Paleozoic forInations i n Pima and C ochi s e C ou ntie s . . . . . . . . . . . . . . . . . . . . . . 79

10. Map of Arizona showing structural province s . . . . . . . . . . . . . . . . . . . . . . . . . . . . • . . . . . . . . . • . . . . . . . 90 1 1 . Map of Arizona showing areas of s imilar topographic trends . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92 12 . T ectonic map of Arizona showing known folding and faulting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 3 1 3 . T ec tonic map of parts of the JeroIne and T ombstone a r e a s , Arizona . . • • . • . . . . . . . . . . . . . . . . . . . 9 5 14. T ec tonic map of C lifton quadrangle, Arizona . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 8 1 5 . T ec tonic map of no rthwe stern Mohave County, Arizona . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 00

1 6 - 1 7 . C ro s s s ections of B isbee district, Dripping Spring s Valley, and northwe stern Mohave C ounty, Arizona . . . . . . . • . • . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 0 2 - 1 0 3

1 8 . A e rial views o f the Santa C atalina Mountains , Arizona . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 0 6 1 9 . Plan view o f c r o s s - foliation in Oracle g ranite . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 1 2 20 . Structu r e Inap of C atalina gneis s , southern Santa C atalina Mountains . . . . . . . . . . . . . . . . . . . . . . . . 1 18 2 1 . Photog raphs and photomic rog raphs of C atalina gneis s . . • . . . . . . . • . . . . . . . . • . . • . . . . . . . . . . . . . . . 1 20

xii

22. Photomic rographs of C atalina gneis s and photographs of pegmatite s .. . . . . . . . . . . . . . . . . . . . . . . . 1 23 2 3 . G eneralized g eologic map and c ro s s s ection of Empire Mountains , Arizona . . . . . . . . . . . . . . . . . . 1 28 24. C ochi s e Head and Rhyolite C anyon, Chiricahua Mountains , Arizona . . . . . . . . . . . . . . . . . . . . . . . . . 1 34 2 5 . G eologic map and c r o s s section, vicinity of Apache Pas s , C hiricahua Mountains . . . . . . . . . . . . . . 1 37 26 . G eneralized g eologic map of the Dragoon quadrangle , Arizona . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 140 2 7 . G e ologic map of the Saginaw Hill area, Tuc son Mountains , Arizona . . . . . . . . . . . . . . . . . . . . . . . . . 148 28 . Index map and c ro s s s e c tions to accompany figure 2 7 . . . . . . . . . . . . . . . . . . . . . . . • . . . . . . . . . . . . . . 149 29 . G eologic map and c ro s s s ection of the San Xavie r Indian R e s e rvation, Arizona . . . . . • . . . . . . . . . 1 52 30 . C rate r Elegante and east side of Pinacate Mountains . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 60 3 1 . Aerial view of C rate r Elegante to C e rro C olorado . . . . . . . . . . . . . . . . . . . . . . . . . . . . . • . . . . . . . . . . . 1 66 32. G eologic map and c r o s s section of C rate r Elegante . . . . . . . . . . . . . . . . . . . . . . • . . . . . . . . . . . . . . . . . 1 67 33. Typical exposure of tuff-breccia " rim beds, " C rater Elegante . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 69 34. Ae rial view of MacDougal C rater to Hornaday Mountains . . . . . . . . . . . . . . . . • • . . . . . . . . . . . . . . . . . 1 72 3 5 . G e ologic map of MacDougal C rater . . . . . . . . . . . . . . . . . . . . . . . . • . . . . . • . . . . . . . . . . . . . . . . . . . . . . . 1 7 3 3 6 . Aerial view of C rate r G r ande ( Syke s C rater) . . . . . . . . . . • . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 7 6 3 7 . G e ologic map o f C rate r G r ande ( Syke s C rate r} . . . . . . . . . . . . . . . . . . . . . . . . . . . • . . . . . . . . . . . . . . . . 1 7 7 3 8 . Ae rial view o f C e rro C ol o rado . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . • . . . . . . . . . . . . . . 1 8 0 39 . G eologic map o f C e rro Colorado . . • . . . . . . . . . . • . . . . . . . . . . . . . . . . . . . . . . . . . . • • . . • . • . . . . . . . . . . 1 8 1 40 . North wall of C erro C olorado, Sonora, and ae rial view of Del Bac Hill s , Arizona . . . . . . . . . . . . . 1 84 4 1 . G ene ralize d c r o s s s ec tions in East Sier r ita area and z onal arrang ement of o r e . . . . . . . . . . . . . . . 1 9 0 42 . G eologic map o f San Xavier mine a r ea and diag rammatic c r o s s s ection o f Pima pit . . . . . . . . . . . 1 9 7 43. Diag r ammatic c ro s s s ection, Mis sion development, East Sierrita a r e a . . . . . . . . . . . . • . • . . . . . . . 200 44. G ene ralized g e olog ic map, East Sie rrita a rea, and part of route of Field T rip I . • . . . . . . . . . . . . 206 4 5. G eolog ic map of Waterman and Silver B ell Mountains showing route of Field T rip II. . . . . . . . . . . 2 1 2 46. Structu r e map o f Santa C atalina Mountains , Arizona, showing route of Field T rip III .. . . . . . . . . . 2 1 8 4 7 . G e ologic sketch map of T uc son Mountains , showing route of Field T rip IV . . . . . . . . . . . . . . . . . . . 2 24 48. Index map of southeastern Arizona, showing route of Fiel d T rip V . . . . . . . . . . . . . . . . . . . . . . . . . . 228 49. Ae rial views of Santa Rita and Mustang Mountains . . . . . . . . . . . . . . . . . . . . . . • . . . . . . . . . . . . . . . . . . 2 3 1 50 . Aerial views of Whetstone Mountains and Tombs tone Hills . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 3 2 5 1 . G eologic map of Tombstone Hills and Gove rnment Butte , C ochi s e C ounty . . . . . • . . . . . . . . . . . . . . 2 34 52. G eologic sketch map and c r o s s s ection of area east of Gle e son, Arizona . . . . . . . . . . . . . . . . . . • . . 240 53. G eolog ic sketch map and c r o s s section of area near C ourtland, Arizona . . . . . . . . . . . . . . . . . . . . . 244 54. A e rial views of B owie Mountain and Little Dragoon Mountains . . . . . • . . . . . . . . . . . . . . . . . . . . . . . . 249 55. Index map showing east half of Field T rip VI, s ome areas cove red by small e r - s caled

maps and locations of c ro s s s ections shown in fig u r e s 5 6, 59, and 60 . . . . . • . . . . . . . . . . . . . . 2 52 56. Diag rammatic c r o s s s ec tions A-A' and B -B ' and explanation to accompany Field T r ip VI . . . . . . 2 54 57. G e ologic map of parts of B aboquivari, Ro skrug e , South C omobabi and Arte sa Mountains . . . . . . . 2 5 6 58 . Ae rial views of B aboquivari Mountains and B en Nevis Mountain, Arizona . • . . . . . . . . . . . • . . . . . . 2 59 59. Diag rammatic c r o s s s ec tions C -C ', D - D' , and E - E ' to ac company Field T rip VI . • . . . . . . . . . . . 260 60. Diag rammatic c ro s s s ections F -F' , G -G' , and H -H' to accompany Field T rip VI . . . . . • . • • . . • . 262 6 1 . Index map of west half of Field T rip VI showing Pinacate Mountains and locations of

c ro s s s ections in figure 60 . . . . . . . . . . . . • . . . • . . . . . . . • • . . . . • . . . . . . . . . . . . . . . . . . . . . . . . . . • 2 64 62. Ae rial views of Sie r r a Blanca and Ajo Mountains, Arizona . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 267

TAB LES ( Short Titl e s )

1 . Nomenclature chart o f s edimentary rocks in southe rn Arizona and adjac ent a r e a s . . . . . . . . . . .. . . 1 0 2 . Rubidium- strontium and pota s s ium- argon ag e s o f s ome rocks i n Arizona . . . . . . . . . . . . . . . . . . . . • 1 8 3 . Alpha-lead age s o f zircon s eparate s from some rocks i n Arizona . . . . . . . • . . . . . . . . . . . . . . . . . . . . 1 9 4 . Devonian unit name s i n s outheastern Ariz'ona and southwe ste rn New Mexico . . . . . • . . . . . . . . . . . . . 2 6 5 . T e st hol e s drille d a s o f August 1 9 5 8 i n southern Arizona valleys . . . . . . . . . . . . . . . . . . . . . . . • . . . • . 64 6. C hart s howing igneous rock nam e s in 14 areas in Ariz ona . . . . . . . . . . . . . . • . . . . . . . . . . . . . . . . . . . . 8 6 7 . G eneralized s e quence o f rock 'units in the Dragoon quadrangle, Arizona . . . . . . . . . . . . . . . . . . • . . . 1 4 3 8 . C omparison o f thickne s s e s o f Paleozoic s ections in Tuc son and Sie r rita Mountains . . . . . . . . . . . . 1 8 6

NOTE : FIELD TRIP ROUTES AND SOME AREAS C OVERED BY DE TAILED MAPS ARE SHOW N ON FIGURES 48, 55 AND 60 .

xiii

A R I Z O N A G E O L O G I C A L S O C I E T Y

Walte r E . Heinrichs, Jr . John F . Lance John E. Kinni son F ranc i s D. MacKenzie

John W. Har shbarg e r Evans B . Mayo Har r i s on A. Schmitt Robe rt E . Heineman Edwin A. Stone Jame s L. K elly W illard C . Lacy

O F F I C E R S

P r e s ident Vice P r e s ident

Sec r etary T r easurer

C O U N C I L O R S

1 9 59 1 9 59 1 9 59 1 9 60 1 9 60 1 9 6 1 1 9 6 1

Heinrichs Geoexploration C o . Unive r sity o f Arizona

Ame rican Smelting & Refining C o . B anner Mining C ompany

U. S. Geological Survey Univ e r sity of Arizona

C onsultant C onsultant C onsultant

Anaconda Exploration C ompany Unive r sity of Arizona

F I E L D T R I P A N D G U I D E B O O K C O M M I T T E E S

G E N E R A L

John F . Lanc e ( Chairman) Jam e s H. C ourtright William L. Eme rick

Unive r sity of Arizona Ame rican Smelting & R efining C o .

U . S. Geological Survey U. S. Geolog ical Survey

MacFarland & Hulling e r C ompany Anaconda Exploration C ompany

Arizona Bureau of Mine s Ame rican Smelting & Refining C o .

L. A . Heindl G . W . Irvin Jam e s L. Kelly H. W e sley Peirce Kenyon Richard C a rl B. Richardson

L. A. Heindl John W. Anthony Stephen H. C ong don K. Jam e s DeCook Leonard C . Halpenny Richard T . Moo r e Reed F . W elch E. Tad Nichol s H. A. Higbie

G U I D E B O O K

E ditor A s s oc iate Editor A s s istant Editor As sistant E ditor As s istant Editor As sistant E ditor

Adve rtis ing Photography

T echnical Advi sor

Consultant

U . S. G eological Survey Univ e r sity of Arizona

Consultant Unive r s ity of Arizona

C onsultant Arizona Bureau of Min e s

American Smelting & Refining C o . Photog raphe r

T R A N S P O R T A T I O N A N D T R I P A R R A N G E M E N T S

Robert E . Heineman E dward S. Davidson Phillip W . Johnson Hal sey W . Mille r Thomas W. Mitcham Spenc e r R. Titley

Chairman C onsultant U . S. G eolog ic al Survey U. S. G eological Survey

Unive r s ity of Arizona Univer sity of Arizona

The New J e r s ey Z inc C o .

U n i v e r s i t y o f A r i z o n a S t u d e n t s

B e rnard C . Arms C harl e s M. B ock John E. Cunningham Murray C . Gardn e r Robert S . G ray Georg e D. Hall Joshua T . Hollande r

William W . Jenney Jo s eph L. Kirby

Kenrick L. Lamb Alexande r W. Laughlin

Edgar J. McCullough, Jr . W illiam F . Mathias

Philip Matter Robert A. Moor e

xiv

Harry J. Ol son William D. Potts

William B . Purdom Donald W. Schafroth

George C . Thomas Richard R. Weaver

Paul A. Wood

L

ACKNOWLEDGMENT S

The F ield T rip and Guidebook C ommittee extends g rateful thanks to the many individual s and organizations that c ontribute d to the field trip s and thi s guidebook. The C ommittee is indebted to the Unive r s ity of Arizona for the provi sion of r eg i s ­tration and parking fac ilitie s and to the U . S . Geolog ical Survey, Arizona Bureau of Mine s and the Unive r sity of Arizona G eology Department fo r many c ourte s ie s and helpful sug g e stion s . Particular thanks are due the P ima Mining C ompany and the Duval Sulphur and Potash C ompany for p e rmi s s ion to vi s it their r e spective mining prope rtie s . W e a r e al s o g rateful to the Papago Indian C ounc il fo r p e rmi s sion to in­spect parts of the Papag o Indian Re s e rvation and to the United State s and Mexican Immig ration author itie s and M r . C o sme Hinoj o s a, J r . , the Mexic an C onsul in Tuc ­s on, fo r c ourte sie s in fac ilitating the visit to the P inacate Mountains in Sono ra, Mexic o . The a s s i s tanc e g iven by the P ima and C ochi s e C ountie s Sher iff s ' offic e s and the Arizona Highway Patrol in traffic c ontrol i s g ratefully appr e c iated .

The p reparation of this guidebook would have b e en impo s s ible without the c oop­e r ation of many people . In particular , thanks are due Prof. John W. Anthony, E di ­tor o f the Arizona Geolog ical Soc iety Dig e st, fo r g ene rously c on s enting to the c om­bination of the 2nd annual i s sue of the Dig e st with the guidebook and for his e dito rial a s si stance on the c ombined volume. The drafting , exc ept for figure s with a r ticle s 1 8 , 2 3 , 2 7 , and 3 2 , wa s done by Me s s r s . H. A. Higbie, W illiam D . Potts , G e o r g e

S. Smithand Henry Leon. The typing o f manu s c ripts and tabl e s was done p r inci ­pally b y Mr s . Larry D . Ag enbroad, Mi s s C a rol Jenkins , Mr s . Jam e s M . Hall and M r s . John H. Mye r s . Mis s Ro se Samardzich and Mr s . Ma rlene Howard, s ec r e ­tari e s of the Geology Department a t the Unive r sity and the U . S . Geological Survey, r e spectively, effic iently handle d a multitude of detail s . Particular and spe cial thanks a r e due the many people who r ead c opy and p roof.

The technic al exc ellenc e of this volume is the work of the Walke r Lithoc raft P rinting C ompany and M r . and M r s . Robert L . W alke r . Mr. T e d DeGrazia de ­s igned and M r . Robe rt Sp ray s ilk- s c reened the c ove r . DeG razia al s o drew the s eve ral delightful end-pi ec e s . M r . E . T ad Nichol s kindly c ontributed hi s tim e and ability to take mo st of the photograph s . T he photograph of D r . B e rt S. Butl e r i s r eproduced through the c ourte sy of the As s o c iated Students o f the Unive r s ity of Arizona.

NOTE

The time notation u s e d throughout the road log s indicate s direction for ob s e r ­vation: 1 2 : 0 0 i s straight ahead; 9 : 0 0 i s full left ; and 3 : 0 0 i s full r ight.

C ro s s r efe rence betwe en article s in thi s guidebook is made by listing the name of the author and the unde rlined Arabic numbe r of the article . F o r example , a ref­e r ence to article 4 , The P r e c ambrian rocks in s outhern Arizona by John F. Lanc e i s shown a s ( Lanc e, 4 ) . Similarly, field trip road log s a r e refe r re d to by the num ­ber of the field trip in Roman numeral s . The road log fo r the field trip to the c ha­otic b r e c c ia s in the Tuc s on Mountains is refe r r e d to as F ield T rip IV. The c o rne r s of the pag e s of the s edimentary and igneous rock charts a r e marke d for handy loc a ­tion.

xv