NEW MEXICO GEOLOGICAL SOCIETY
Guidebook
of the
MOGOLLON RIM REGION
EAST-CENTRAL ARIZONA
Prepared in cooperation with the
ARIZONA GEOLOGICAL SOCIETY
Edited by
Robert H. Weber and H. Wesley Peirce
THIRTEENTH FIELD CONFERENCE
October 18, 19, and 20, 1962
N E W
M E X I C O
G E O L O G I C A L
S O C I E T Y
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T H I R T E E N T H
F I E L D
C O N F E R E N C E
CONTENTS
President's Message ------------------------------------------------------------------------------------------------------------------------------------------------------------------- 3
Acknowledgm ents ------------------------------------------------------------------------------------------------------------------------------------------------------------------------ 4
Executive and Field Conference Com m ittees ................................................................................................................................................. 5
Publications of the New Mexico Geological Society ------------------------------------------------------------------------------------------------------------------- 7
Schedule -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- 7
Index Map and Conference Route ...................................................................................................................................................................... 8
ROAD LOGS
Gallup to Globe via Zuni, St. Johns, Show Low, and Salt River Canyon
First day, Thursday, October 18 ------------------------------------------------ Roy. W . Foster, Robert Ostrander, J. P. Akers, P. W.
Johnson, M. E. Cooley, T. L. Finnell, E. J. McKay, H. Wesley Peirce, and George R. Roseveare 10
Globe to Superior and return
Second day, Friday, October 19 ---------------------------------------------------------------- H. W esley Peirce and George R. Roseveare 26
Globe to Flagstaff via Payson, Jerome, and Sedona
Third day, Saturday, October 20 ------------------------------------------------------------------------------------H. Wesley Peirce, M. E. Cooley,
P. W. Johnson, and William J. Breed 31
Alternate route from mile 152.4 to Flagstaff via Black Canyon Highway ----------------------------------------------- W illiam J. Breed 50
__________ 0 _________
Geologic Information Center
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N E W M E X I C O
G E O L O G I C A L
S O C I E T Y
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T H I R T E E N T H
F I E L D
C O N F E R E N C E
PAPERS
A working hypothesis for Arizona's older Precambrian history ------------------------------------------------------------------------ Gordon Gastil
52
Older Precambrian rocks near the Salt River Canyon, central Gila County, Arizona ---------------------------------- D. E. Livingston
55
New K-Ar dates for the Precambrian of Pinal, Gila, Yavapai, and Coconino
Counties, Arizona ------------------------------------------------------------------------- P. E. Dam on, D. E. Livingston, and R. C. Erickson ------56
Regional structural-stratigraphic cross section, east -central Arizona
to west- central New Mexico ------------------------------------------------------------------------------------------------------- Sherm an A. W engerd
58
The Deming axis, southeastern Arizona, New Mexico, and Trans -Pecos Texas -------------------------------------- Gregory L. Turner
59
Devonian conodonts in Arizona ------------------------------------------------------------------------------------------------------------------ Ra y L. Ethington
72
Pennsylvanian rocks of the Mogollon Rim area, Arizona -------------------------------------------- F. E. Kottlowski and Ka y C. Havenor
77
b/
Paleontological reconnaissance of subsurface Pennsylvanian in southern
Apache and Navajo Counties, Arizona ---------------------------------------------------------------------------------------------- Donald H. Lokke
84
Lithology and stratigraphy of the Supai Form ation, Fort Apache Indian Reservation, Arizona ------------- Stephen S. W inters
87
Occurrences of Paleozoic carbonaceous deposits in the M o g o l l o n Rim region ------------------------------------- D. 0 . McGoon, Jr.
89
Note on the " A l p h a " m ember of the Kaibab Formation --------------------------------------------------------------------------------------- L. F. Brady
92
Cretaceous rocks of the Mogollon Rim area in Arizona ------------------------------------------------------------------------ Halsey W . Miller, Jr. ------93
Cenozoic history of the Jerome region, Yavapai County, Arizona ------------------------------------------------------------- Robert E. Lehner
Cenozoic sedimentary rocks of Tonto Basin
94
--------------------------------------------- J. F. Lance, J. S. Downe y, and Malcolm A l f o r d ------98
Mogollon Rim volcanism and geochronology ------------------------------------------------------------------------------------------------------- Bruno E. Sabels 100
The significance of the volcanic rocks in the Fossil Creek area, Arizona -------------------------------------------------------Floyd R. Twenter 107
New fossil localities in the Verde Formation, Verde V a l l e y, Arizona --------------------------------------------------------------- Floyd R. Twenter 109
Pollen analysis of Laguna Salada --------------------------------------------------------------------------------------------------------------------------------- R. H. Hevly 115
The Holbrook anticline, Navajo County, Arizona ------------------------------------------------------------------------------------------------------ Carl W . Bahr 118
Geology along the Diam ond Rim and adjoining areas, G i l a and Navajo Counties, Arizona -------------------------- Spencer R. Titley 123
Springs along the Mogollon Rim in Arizona ------------------------------------------------------------------------------------------ J. H. Feth and J. D. Hem 129
Rocks and water in Verde Valley, Arizona ---------------------------------------------------------------------------------------------------------- Floyd R. Twenter 135
Hydrologic aspects of the pinyon and juniper eradication project on the Fort Apache
Reservation, Arizona -----------------------------------------------------------------------------------
R. M. Myrick and M. R. Collings 140
Geology of Kennecott Copper Corporation's Safford copper deposit ……………………………… Annan Cook and R. F. Robinson 143
Som e geologic features of the Superior area, Pinal County, Arizona……………. F. Hammer, R. N. W ebster, and D. C. Lamb 148
Geological notes on the Miami -Inspiration mine ---------------------------------------------------------------------- E. F. Reed and W . W . Sammons 153
Geology and ore deposits of the Globe quadrangle ------------------------------------------------------------------------------------------ Nels P. Peterson 1 5 8
Zuni
in
brief
review
------------------------------------------------------------------------------------------------------------- Bertha P. Dutton 162
Archeology of the Flagstaff area -------------------------------------------------------------------------------------------
Harold S. Colton 171
Abstracts of technical papers ------------------------------------------------------------------------------------------------------------------------------------------------------- 173
IN POCKET
Areal geologic map of Holbrook anticline -------------------------------------------------------------------------------------------------------------------------- Carl W . Bahr
Drainage map of Holbrook anticline ----------------------------------------------------------------------------------------------------------------------------- Carl W . Bahr
Generalized geologic m ap and sections of the Superior area -------------------------------------------------------- D. F. Hammer and R. N. W ebster
Geology of Magm a vein ---------------------------------------------------------------------------------------------------------------- D. F. Ham m er and R. N. W ebster
Regional structural-stratigraphic section ------------------------------------------------------------------------------------------------------------ Sherm an A. W engerd
N E W
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T H I R T E E N T H
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C O N F E R E N C E
PRESIDENT'S MESSAGE
W elcome to the Thirteenth Annual Field Conference
of the New Mexico Geological Society in the Mogollon
Ri m c o u n t ry o f A ri zo n a . T h i s i s o u r s e c o n d c o n f e re n c e t o
b e h e l d i n c o o p e r a t i o n wi t h t h e A r i z o n a G e o l o g i c a l S o c i ety, and the road logs and technical papers in this
g u i d eb o o k s h e d l i g h t o n m a n y p r o b l e m s w h i c h a r e o f
m utual interest to geologists in both states. The history
o f c o o p e r a t i o n b e t we e n t h e s i s t e r s o c i e t i e s , a s we l l a s
b e t we e n A r i z o n a a n d N e w M e xi c o g e o l o g i s t s i n g e n e r a l ,
h e l p s t o a c c o u n t f o r t h e f a c t t h a t t h e r e a r e n o " s t a t el i n e f a u l t s " wi t h " d i s p l a c e m e n t s " l a r g e e n o u g h t o r e a l l y
s e p a r a t e t h e rocks or the geologists.
A f t e r r e v i e wi n g p r e s i d e n t i a l m e s s a g e s i n t h e p r e c e di n g g u i d e b o o k s , I f i n d i t d i f f i c u l t t o a vo i d re p e t i t i o n i n t h i s
message. The reasons are obvious: so many things have
b e e n we l l s a i d b y p a s t p re s i d e n t s , a n d s o m a n y t h i n g s a re
wo r t h r e p e a t i n g . T h e M o g o l l o n R i m c o n f e r e n c e wa s
c o n c e i v e d s e v e r a l y e a r s a g o a n d wa s p r e d i c t e d i n t h e
p r e s id e n t i a l m e s s a g e s b y F ra n k K o t t l o ws k i a n d Ri c h a rd
Ho l t i n t h e g u i d e b o o k s f o r t h e 1 1 t h a n d 1 2 t h f i e l d
c o n f e r e n c e s . T h e s e m e n a n d o t h e rs i n b o t h s o c i e t i e s ,
wh o a re re s p o n s i b l e f o r c o n c e i v i n g a n d c a r r y i n g o u t
this and other field conferences, are not "prophets" in
the usual sense but, i ns t ead, are peopl e wi t h a
c a p a c i t y f o r h a r d w o r k w h o u n s e l f i s h l y g i ve t h e i r t i m e ,
i d e a s , a n d p ro f e s s i o n a l k n o wl e d g e i n o r d e r t h a t
p r e d i c t i o n s w i l l c o m e t r u e . I t i s g r a t if y i n g t o n o t e t h a t
o t h e r s wh o a r e n o t a f f i l i a t e d wi t h e i t h e r s o c i e t y a l s o
c o n t r i b u t e g r e a t l y . U n t i l o n e h a s wo r k e d o n a f i e l d t r i p
and observed at first hand the planning and execution
of the trip and publication of the guidebook, it is
d i f f i c u l t t o r e a l i z e t h e c o m p l e xi t i e s i n v o l v e d , a n d a p preciate the talents and hard work of the members of
f i e l d t r i p c o m mi t t e e s . A l a r g e d e b t o f g r a t i t u d e i s d u e
t h e G e n e ra l Ch a i rm a n a n d V i c e- Ch a i rm a n , t h e E d i t o rs ,
the chairmen and members of the various committes, the
authors of the articles, and the companies and State and
Federal organizations that donated "company time" and
s e r v i c e s . I h o p e t h a t e v e r y o n e wh o u s e s t h i s g u i d e b o o k
wi l l r e a d t h e l i s t o f c o m m i t t e e s i n t h e f r o n t o f t h e
g u i d eb o o k a n d d e t e r m i n e t h e n a m e s a n d a f f i l i a t i o n s o f
t h o s e who made the field conference possible.
T h e M o g o l l o n- T o n t o R i m f i e l d c o n f e r e n c e a g ai n e m phasizes the non- specialized purposes of the New
M e xi c o G e o l o g i c a l S o c i e t y . T h e r o u t e o f t h e f i e l d t r i p
w a s c h o s e n t o c o ve r t h e g e n e ra l g e o l o g y o f t h e e n t i re
re g i o n . T h e s e c o n d d a y ' s t r i p i n t h e G l o b e - S u p e r i o r
a r e a t a k e s u s i n t o t h e h e a rt o f o n e o f t h e f a m o u s m e t a l
m i n i n g a re a s o f A r i z o n a a n d s h o u l d p r o v e o f i n t e r e s t t o
a s e g m e n t o f the profession which is often neglected.
The guidebooks of the New Mexico Geological Society
now form an unbroken series of thirteen. The 1st, 2nd,
3rd, and 6th guidebooks are out of print, and the stocks
o f s e ve ra l o t h e rs a re l o w. T h o u s a n d s o f g u i d e b o o k s h a ve
b e e n s o l d , t h e s a l e o f t h e s e b o o k s p ro vi d i n g a c o n t i n u i n g
single source of revenue for the society. However, we
presently have an inventory of about $40,000 worth of
guidebooks. These books are all paid for, but the incomef ro m t h e i r
s a l e i s n e a rl y s t a t i c , wh e re a s , t h e p ri c e o f p u b l i s h i n g
new guidebooks has slowly risen.
and income curves "crossed" and
l i c a t i o n e xc e e d e d t h e i n c o m e t o t h e
economies in the preparation of the
In 1961, the cost
the price of pubSociety. In spite of
13th guidebook we
may find ourselves in a similar position in 1962. This
ra t t l e s a n o l d s k e l e t o n i n t h e S o c i e t y' s c l o s e t ; s h o u l d t h e
f i e l d c o n f e re n c e s a n d e l a b o ra t e g u i d e b o o k s b e c o n t i n u e d
a s i n t h e p a s t , o r s h o u l d t h e S o c i e t y c h a n g e i t s a p p ro a c h
to both the conferences and the guidebooks? This question has been raised and discussed by the membership on
several occasions. Very few people really wanted to
c h a n g e t h e m a i n l y s a t i s f a c t o ry o p e ra t i o n s o f t h e S o c i e t y,
a n d i t h a s a l wa y s b e e n d e c i d e d o v e r wh e l m i n g l y t h a t we
should continue with the status quo. However, the
f i n a n c i a l s i t u a t i o n h a s b e c o m e c ri t i c a l t h i s ye a r a n d a
re a l istic approach is necessary.
Several solutions have been suggested. All of them
have merit, but all of them have certain disadvantages.
A n o b vi o u s s o l u t i o n i s t o s e l l o u r b a c k i n ve n t o ry o f g u i d ebooks. This is easier said than done. W e must admit
t h a t t h e m a r k e t f o r t h e s e b o o k s i s s o m e wh a t l i m i t e d .
U n d o u b t e d l y m o s t o f t h e m wi l l b e s o l d e v e n t u a l l y , b u t i t
is difficult to accelerate the dem and. The Executive
Committee began an advertising campaign in 1961 and
this is being continued. The campaign helped but, it
wi l l n o t s o l v e a l l o f o u r f i s c a l p r o b l e m s u n l es s t h e
audience for whom t he gui debook s are publ i s hed has
a change of heart, or at least a change of financial
s t a t u s . A r elated, partial solution is to limit the size of
t h e e d i t i o n s , a n d t h i s h a s b e e n d o n e wi t h t h e p r e s e n t
g u i d e b o o k . H o w e ve r, t h e re a re c e rt a i n b a s i c c o s t s i n
p u b l i s h i n g a n e l a b ora t e g u i d e b o o k wh e t h e r t h e e d i t i o n i s
5 0 0 , 1 0 0 0 , o r m o re ; l i m i t i n g t h e n u m b e r o f b o o k s
p r i n t e d i s b y n o m e a n s a total solution to publication costs.
It has been suggested that we postpone our next field
c o n f e re n c e f o r o n e o r t wo ye a rs a n d re c u p e ra t e f i n a n c i a ll y. T h i s s u g g e s t i o n h a s n o t m e t wi t h m u c h f a vo r. A n o t h e r
s u g g e s t i o n i s t h a t we s p o n s o r s e ve ra l s m a l l t ri p s b y l o c a l
groups each year, but this seems to infringe on the functions of the local societies.
A s u gg e s t i o n wh i c h h a s m e r i t i s t h a t o u r f u t u r e f i e l d
conferences should concentrate on specific problems in
l i m i t e d a re a s ra t h e r t h a n a t t e m p t i n g t o c o ve r t h e g e o l o g y
of large regions. An "outcrop" trip would consist of
visiting and exam ining in detail those lo calities which
provide important evidence used in interpreting regional
g e o l o g y . T h e l o c a l i t i e s wo u l d i n c l u d e s u c h t h i n g s a s
o n -l a p s a n d a n g u l a r u n c o n f o rm i t i e s , we l l -e xp o s e d f a u l t s ,
b i oherms,
mineralized
areas,
important
stratigraphic
localities, e t c . T h i s k i n d o f f i e l d c o n f e r e n c e w o u l d
s at is f y t he rem ark of t en heard on f ield t rips , t o wit : " I
wi s h I c oul d see the 'significant' outcrops in those hills
5 m i l e s a wa y
that he's describing." An outcrop trip probably could be
planned in such a way that a m odest and inexpensive
guidebook could be prepared, the trip would be interesting,
f i n a n c i a l l y s u c c e s s f u l , a n d t h e c o m p l e x wo r k o f t h e
vari -
3
4
NEW MEXICO GEOLOGICAL SOCIETY % THIRTEENTH FIELD CONFERENCE
ou s c o m m i t t e e s c o u l d b e l i g h t e n e d . C e r t a i n l y , s u c h t r i p s
wi l l b e v e r y m u c h i n o r d e r wi t h i n a v e r y f e w y e a r s u n l e s s
w e a r e t o r e -r u n s o m e o f o u r e a r l i e r t r i p s . R e - r u n s m a y
not be desirable because in some areas very little new
wo r k h a s b e e n d o n e , wh i l e i n o th e r a r e a s o t h e r s o c i e t i e s
have held recent field conferences and published
g u i d ebooks.
I n d i s c u s s i n g s o m e o f t h e p r o b l e m s o f f u t u r e o p e r ations of the Society, I do not intend to be pessimistic.
T h e S o c i e t y h a s d o n e a n e xc e l l e n t j o b o f p r o v i d i n g v a l ua b l e i n f o rm a t i o n t o m a n y g e o l o g i s t s a n d b ri n g i n g t o g e t h e r
re p re s e n t a t i ve s o f a l l t h e d i s c i p l i n e s o f t h e g e o l o g i c a l
s c ie n c e s . T h e c o n t i n u i n g n e e d f o r t h e s e r v i c e s o f t h e
S o c ie t y , a n d t h e v i g o r , w i l l i n g n e s s a n d i n i t i a t i v e o f i t s
m e m b e r s g u a r a n t e e s i t s f u t u r e s u c c e s s . H o we v e r , n o w
seems t o be a good t i m e f or s om e ref l ec t i on on t he
financialproblems of the organization and the future
course of its c.,iivities. Change is inevitable in the
c o u r s e o f g e o logical societies as in other human activities.
The Executive C o m m i t t e e wi l l b e e n g a g e d s h o r t l y i n
p r e p a r i n g f o r s o m e o f n e xt y e a r ' s a c t i v i t i e s — t h e s e
t h i n g s t a k e t i m e — a n d wi l l h a ve t o m a k e d e c i s i o n s
a b o u t a f i e l d c o n f e re n c e . T h e o f f i c e r s o f t h e S o c i e t y
a t t e m p t t o a c t i n a c c o r d w i t h t h e wi s h e s o f t h e
m e m b e r s h i p a n d y o u r t h o u g h t f u l c o m m e n t s are invited.
In the m eantim e, I am sure we will enjoy the spec t a c u l a r s c e n e ry a n d t h e g e o l o g y o f t h e Mo g o l l o n Ri m , a n d
with our hosts, the Arizona Geological Society, we will
count this as one of our memorable field conferences .
Elmer H. Boltz, President
N e w M e xi c o G e o l o g i c a l S o c i e t y
ACKNOWLEDGMENTS
Once again, as for the Ninth Field Conference in
1 9 5 8 , we a re i n d e b t e d t o o u r A ri zo n a c o l l e a g u e s f o r t h e i r
splendid cooperation in preparing an informative
guidebook and conducting an excursion through one
of t he more scenic and geologically significant regions
of their domain. Members and friends of the Arizona
Geological Society have contributed unstintingly of
t h e i r t i m e a n d t a l e n t s t o wa r d t h e s u c c e s s o f t h i s f i e l d
c o n f e r e n c e . T h e m e a s u re o f t h e i r c o n t ri b u t i o n i s o n l y
p a rt i a l l y re ve a l e d b y the com m ittee m em berships and
technical contributors list ed in the pages following.
A perusal of this guidebook perhaps more fully reveals
the broad spectrum of organizational affiliations of the
committee members and authors, representing many
segments of governmental, commercial, and academic
fields of activity. The New Mexico Geological Society
is m ost grateful, both to the individuals so identified,
and the or ganizations that they represent, for the many
m a n -d a y s t h a t we r e d e v o t e d t o t h e p r e p a r a t i o n f o r , a n d
conduct of, this field conference. W ithin many of these
o r g a n i z a t i o n s a re a n u m b e r o f p e rs o n s wh o c o n t ri b u t e d
s i g n i f i c a n t l y, b u t a n o n y m o u s l y , t o t h e s u c c e s s o f t h i s
p r o g r a m . A l t h o u g h e s p e c i a l l y n o t e wo r t h y a r e t h e s t a f f s
of the Ground W ater Branch of the U. S. Geological
S u r v e y , t h e N e w M e xi c o Bureau of Mines and Mineral
Resources, and the Arizona Bureau of Mines, ot hers
share in our appreciation of these efforts even though not
individually identified herein.
To the management and staff of the Miami Copper
Company Division of the Tennessee Copper Corporation,
the Inspiration Consolidated Copper Company, and the
Phelps Dodge Corporation, the Society extends its sincere
thanks for courtesies rendered during stops at their
r e s pective mining properties.
E s c o r t s e r v i c e s p r o v i d e d b y t h e N e w M e xi c o S t a t e
P o l i c e , t h e A r i z o n a H i g h wa y P a t r o l , a n d t h e M i a m i C i t y
Police greatly assisted the progress of the caravan.
N E W
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T H I R T E E N T H
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EXECUTIVE COMMITTEE — NEW MEXICO GEOLOGICAL SOCIETY
Elmer H. Boltz
Frederick J. Kuellmer
President
Vice- President
Sam Thompson Ill
W o l f g a n g E. Elston
Richard D. Holt
Secretary
Treasurer
Past President
U. S. Geological Survey
N e w M e xi c o B u r e a u o f
Mines and Mineral Resources
Humble Oil and Refining Company
University of New Mexico
Humble Oil and Refining Company
EXECUTIVE COMMITTEE — ARIZONA GEOLOGICAL SOCIETY
F.
T.
C.
S.
D. MacKenzie
W . Mitcham
L. Fair
V. Bowditch
President
Vice- President
Secretary
Treasurer
Banner Mining Company
University of Arizona
Bear Creek Mining Company
American Smelting and Refining Company
FIELD CONFERENCE COMMITTEES
W illiam R. Speer
Robert L. Cushman
General Chairman
Vice- Chairman
El Paso Natural Gas Products Company
U. S. Geological Survey
Guidebook Committee
Robert H. W eber
Editor
H. W esley Peirce
Co -Editor
N e w M e xi c o B u r e a u o f M i n e s
and Mineral Resources
Arizona Bureau of Mines
Road Logging Committee
Phillip W . Johnson
Jay P. Akers
Sidney R. Ash
W illiam J. Breed
Maurice E. Cooley
Thomas L. Finnell
Roy W . Foster
Chairman
U. S. Geological Survey U. S.
Geological Survey U. S.
Geological Survey Museum of
Northern Arizona U. S.
Geological Survey U. S.
Geological Survey
New Mexico Bureau of Mines
and Mineral Resources
U. S. Geological Survey
Mobil Oil Company Arizona
Bureau of Mines Arizona
Bureau of Mines U. S.
Geological Survey
E. J. McKay
Robert E. Ostrander
H. W esley Peirce
George R. Roseveare
Andrew F. Shride
Registration Committee
Robert M. Byington
George Anderson
Ross Lessentine
C h a i r m a n
P a n
A m e r i c a n
P e t r o l e u m C o r p o r a t i o n
Pan Am erican Petroleum Corporation
Pan American Petroleum Corporation
Caravan Committee
Roy W. Foster
Chairman
Ne w Me xi c o B u re a u o f Mi n e s
and Mineral Resources
Catering Committee
Charles Evensen
Chairman
Arizona State University
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Advertising Committee
Roy L. Pritchard
Chairman
El Paso Natural Gas Co.
James L. Albright
Richard D. Holt
Frederick J. Kuellmer
Pubco Petroleum Corporation
Humble Oil and Refining Co.
New Mexico Bureau of Mines
and Mineral Resources
American Smelting and Refining Company
Reed W elch
Publicity Committee
Dave M. Thomas
Chairman
Consultant
Finance Committee
W olfgang E. Elston
Chairman
University of New Mexico
NEW MEXICO GEOLOGICAL SOCIETY 0' THIRTEENTH FIELD CONFERENCE
7
PUBLICATIONS OF THE NEW MEXICO GEOLOGICAL SOCIETY
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
Guidebook of Rio Chama country [New Mexico and
Colorado]; Eleventh Field Conference, 1960; edited
by Edward C. Beaumont and Charles B. Read; 129
pages, 35 illustrations. $8.50
Guidebook of the Albuquerque country [New Mex12.
ico]; Twelfth Field Conference, 1961; edited by Stuart A. Northrop; 199 pages, 73 illustrations. $9.50
Guidebook of the Mogollon Rim region, east-central
13.
Arizona; Thirteenth Field Conference, 1962; edited
by Robert FL Weber and H. Wesley Peirce. $9.50
These publications are available by mail (please add 25c
for postage and handling) from the New Mexico Bureau
of Mines and Mineral Resources, Campus Station, Socorro,
New Mexico. Also over-the-counter sales at either the
Bureau of Mines or the Department of Geology, University
of New Mexico, Albuquerque. Checks should be made
payable to the New Mexico Geological Society. Geologic
maps are available by mail or over the counter at the
Bureau of Mines, Socorro, as follows:
(a) Geologic highway map of New Mexico; compiled
by Frank E. Kottlowski and others. $1.25 folded;
$1.50 rolled. Also available from the Department
of Geology, University of New Mexico, Albuquerque.
( b) Geologic map of the Sierra County Region, New
Mexico; compiled by Vincent C. Kelley; accompanies Guidebook of the Sixth Field Conference.
$1.00
Geologic map of the Rio Chama country; compiled
(c)
by Clay T. Smith and William R. Muehlberger;
accompanies Guidebook of the Eleventh Field
Conference. $0.50
Geologic map of the Albuquerque country; com(d)
piled by Stuart A. Northrop and Arlette Hill; accompanies Guidebook of the Twelfth Field Conference. $0.50
Entry and exit road logs to supplement Guidebook
(e)
of the Ninth Field Conference. $0.50 to $0.75
Guidebook of the San Juan Basin [covering north
and east sides], New Mexico and Colorado; First
Field Conference, 1950; edited by Vincent C. Kelley
and others; 153 pages, 40 illustrations. (Out of
print)
Guidebook of the south and west sides of the San
Juan Basin, New Mexico and Arizona; Second Field
Conference, 1951; edited by Clay T. Smith and Caswell Silver; 163 pages, 69 illustrations. (Out of print)
Guidebook of the Rio Grande country, central New
Mexico; Third Field Conference, 1952; edited by Ross
B. Johnson and Charles B. Read; 126 pages, 51
illustrations. (Out of print)
Guidebook of southwestern New Mexico; Fourth Field
Conference, 1953; edited by Frank E. Kottlowski and
others; 165 pages, 67 illustrations. $5.00
Guidebook of southeastern New Mexico; Fifth Field
Conference, 1954; edited by T. F. Stipp; 213 pages,
83 illustrations.
$5.00
Guidebook of south-central New Mexico; Sixth Field
Conference, 1955; edited by J. Paul Fitzsimmons; 193
pages, 70 illustrations. Prepared with the cooperation of the Roswell Geological Society. $7.00 (Out
of print)
Guidebook of southeastern Sangre de Cristo Mountains, New Mexico; Seventh Field Conference, 1956;
Edited by A. Rosenzweig; 154 pages, 61 illustrations. $7.00
Guidebook of southwestern San Juan Mountains,
Colorado; Eighth Field Conference, 1957; edited by
Frank E. Kottlowski and Brewster Baldwin; 258 pages,
109 illustrations. $7.00
Guidebook of the Black Mesa Basin, northeastern
Arizona; Ninth Field Conference, 1958; edited by
Roger Y. Anderson and John W. Harshbarger; 205
pages, 105 illustrations. Prepared in cooperation
with the Arizona Geological Society. $8.50
Guidebook of west-central New Mexico; Tenth Field
Conference, 1959; edited by James E. Weir, Jr. and
Elmer H. Boltz; 162 pages, 83 illustrations. $8.50
11.
0
SCHEDULE
Wednesday, October 17
5:00 - 10:00 p.m.
Registration at the El Rancho Hotel, Gallup, New Mexico.
Thursday, October 18
Gallup, New Mexico to
Globe, Arizona.
Late registration at the El Rancho Hotel.
Caravan assembles at mile point 0.5 on New Mexico Highway 32, at the south
side of town.
7:00 a.m.
Friday, October 19
Globe to Superior, Arizona
and return.
Caravan assembles 3.6 miles west of the Globe Court House in the parking lot next
to the bowling alley associated with the Copper Hills Motel, on the left side of
U. S. Highway 60-70.
8:00 a.m.
Saturday, October 20
Globe to Flagstaff, Arizona
7:00 a.m.
Caravan assembles on Arizona Highway 88 in front of the Cobre Valley Country
Club, just north of the junction of Arizona 88 and U. S. 60-70, on the right shoulder.
Field Conference ends at Flagstaff.
112°
110°
GRAND CANYON
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VOLCANIC FIELD
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20 MILES
EXPLANATION
FIRST DAY ROUTE
/////
SECOND DAY ROUTE
4
4 4
THIRD DAY ROUTE
STOPS
*
OIL TEST WELLS
34°
NEW MEXICO GEOLOGICAL SOCIETY % THIRTEENTH FIELD CONFERENCE
10
ROAD LOG FROM GALLUP, NEW MEXICO
TO GLOBE, ARIZONA
FIRST DAY — OCTOBER 18, 1962
Gallup to Zuni, New Mexico by Roy W. Foster and Robert Ostrander
Zuni, New Mexico to Show Low, Arizona by J. P. Akers, P. W. Johnson, and M. E. Cooley
Show Low, Arizona to Becker Butte on North Rim Salt River Canyon by T. L. Finnell and E. J. McKay
Becker Butte to Globe, Arizona by H. Wesley Peirce and George R. Roseveare, with comments by A. F. Shride
Distance of Travel: 236.5 miles.
Starting Time: 7:00 a.m.
Assembly Point: Mileage point 0.5, State Road 32, south side of town. (Fig. 1 shows route of trip.)
RESUME
The first day of our trip takes us southward and westward from Gallup, New Mexico into Arizona and the
Mogollon Rim country. As we travel toward the Rim, we
will see Cretaceous and younger rocks that have been
deposited on the beveled surfaces of progressively older
rocks. We will drive through the northwestern edge of
the Datil volcanic field and will be able to trace some of
the ancient drainage channels of the Little Colorado River,
down which the lava flowed, by the erosional remnants.
The Rim marks the boundary between the Colorado
Plateau Province and the Central Mountains Province. The
Central Mountains Province is the transitional zone between the Plateau and the Basin and Range Province to
the southwest. South of the Rim we descend rapidly from
the Plateau through the complete section of Mesozoic and
Paleozoic rocks. In the sequence in Salt River Canyon,
the Paleozoic and younger Precambrian rocks have been
intruded by diabase.
Note:—Users of the road log should bear in mind that the cumulative mileages are approximate. Variations can be
expected due to differences in individual odometers and errors on the part of those preparing the log. Check points
such as bridges and road intersections in the log permit ready correction.
Cumulative
Mileage
0.1
Junction Third Street (State Road 32) and Coal Avenue (U.S. 66) . GO SOUTH ON THIRD STREET.
0.1
TURN LEFT onto Aztec.
0.2
0.1
TURN RIGHT onto Second Street (State Road 32).
0.0
0.4
0.5
2.5
2.6
3.0
3.4
6.2
0.2
Gallup Sandstone crops out on right.
0.1
Outcrops of sandstone, shale, and coal in the Crevasse Canyon Formation on both sides of road. ASSEMBLY POINT. Rear of caravan at this mileage.
2.0
Cattle guard.
0.1
Coal seam in the Crevasse Canyon Formation at 3:00 (read "three o'clock").
0.4
Lenticular sandstone overlying thin coal bed and shale in Crevasse Canyon Formation.
0.4
Cattle guard. Outcrops to the right on hill are in the Menefee Formation. Road continues through outcrops of sandstone, shale, and thin coal beds in the Crevasse Canyon Formation. Note the lenticular nature of the sandstones in this interval.
2.8
Bridge.
0.2
6.4
7.6
8.4
Bridge.
1.2
Road cuts and outcrops on both sides of road of Menefee Formation.
0.8
Sandstone, shale, and thin coal beds in the Menefee Formation.
III°
GRAND CANYON
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