Abstract
Introduction
Methods of study and scope of report
Field and office work
Key to numbered localities
The Colorado Plateau region
Previous work and history of nomenclature
Stratigraphy
Lower (bentonitic) part of Chinle Formation
Mottled strata
Shinarump and related members
Agua Zarca Sandstone Member
Sandstone member
Gartra Member
Monitor Butte and related members
Monitor Butte Member
Lower red member
Mesa Redondo Member
Sandstone and mudstone member
Salitral Shale Tongue
Moss Back and related members
Moss Back Member
Lower member of Dolores Formation
Poleo Sandstone Lentil
Petrified Forest Member and ocher siltstone member
Petrified Forest Member
Ocher siltstone member
Upper (red-beds) part of Chinle Formation
Owl Rock Member
Church Rock Member and related units
Church Rock Member
Rock Point Member of Wingate Sandstone
Unit in Bluewater Creek area, west-central New Mexico
Middle and upper members of Dolores Formation in southern part of San Juan Mountains region
Middle member
Upper member
Dolores Formation in northern part of San Juan Mountains region
Red siltstone member
Sandstone and conglomerate member
Upper member
Sedimentary facies
Lower (bentonitic) part of Chinle Formation
Lithologic types
Method of facies analysis
Results of facies analysis
Upper (red-beds) part of Chinle Formation
Lithologic types
Structureless and horizontally bedded siltstone
Limestone
Wavy-stratified siltstone and sandstone
Trough-cross-stratified sandstone, siltstone, and conglomerate
Planar-cross-stratified sandstone
Method of facies analysis
Results of facies analysis
Sedimentary petrology / R. A. Cadigan
Sandstone and conglomerate
Quartz and other siliceous components
Feldspar
Volcanic detritus
Heavy minerals
Clay minerals
Cementing minerals
Fine-textured and carbonate rocks
Texture and composition of various stratigraphic units
Conglomerate studies / William Thordarson, H. F. Albee, and J. H. Stewart
Methods of pebble analysis
Sampling
Composition
Size
Roundness and sphericity
Results of pebble studies
Shinarump member of Chinle Formation
Sandstone member and Agua Zarca Sandstone member of Chinle Formation
Basal sandstone unit of Chinle Formation near Moab, Utah
Gartra Member of Chinle Formation
Mesa Redondo Member of Chinle Formation
Moss Back Member of Chinle Formation
Poleo Sandstone Lentil of Chinle Formation
Sonsela Sandstone Bed of Petrified Forest Member of Chinle Formation
Petrified Forest Member of Chinle Formation exclusive of Sonsela Sandstone Bed
Basal unit and lower member of Dolores Formation
Sedimentary-structure studies
Paleontology and age
Pelecypods
Gastropods
Arthropods
Fish
Amphibians
Reptiles
Order Thecodontia
Order Saurischia
Order Therapsida
Plants
Sphenopsids
Cycadophytes
Confiers
Gnetales
Monocotyledons
Age of the Chinle Formation
Interpretations
Lower (bentonitic) part of Chinle Formation
Environment of deposition as indicated by fossils
Mottled strata
Cross-stratified sandstone and conglomerate
Cross-stratified clayey sandstone
Ripple-laminated sandstone
Structureless or horizontally stratified claystone and clayey siltstone
Location and terrane of source areas
Mogollon highland
Uncompahgre highland
Front Range highland
Upper (red-beds) part of Chinle Formation
Environment of deposition as indicated by fossils
Structureless and horizontally bedded siltstone
Limestone
Wavy-stratified siltstone and sandstone
Trough-cross-stratified sandstone, siltstone, and conglomerate
Planar-cross-stratified sandstone
Location and terrane of source areas
References cited
Stratigraphic sections
Arizona
A-2, Black Mountain Wash
A-3, Chee Dodge
A-4, Horse Mesa Creek
A-6b, Lukachukai Trading Post
A-7, Lupton
A-8a, Nazlini Trading Post section A
A-8b, Nazlini Trading Post section B
A-9b, St. Johns section B
A-9c, St. Johns section C
A-9d, St. Johns section D
A-10, Black Point
A-13, Owl Rock
Colorado
C-1, Piedra River
C-2, East Brush Creek
C-4, South Canyon Creek
C-5, Durango
C-6, Bridgeport
C-7, Carson Hole
C-8, The Palisade
C-9, The Serpents Trail
C-10, Cross Mountain
C-11, Miller Creek
C-13, Vermilion Creek
C-14a, Stoner section A
C-14b, Stoner section B
C-15, Paradox Valley
C-16, Ouray
C-17, Aspen
C-18, Meeker (Oak Ridge)
C-19, Sawpit
Nevada
N-1, Horse Spring Valley
N-2, Spring Mountains
N-3, Valley of Fire
New Mexico
NM-1a, Chavez-Prewitt section A
NM-1b, Chavez-Prewitt section B
NM-2, Fort Defiance section
NM-3a, Fort Wingate section A
NM-3b, Fort Wingate section B
NM-4, Todilto Park
NM-5a, Zuni section A
NM-5b, Zuni section B
NM-6, Abiquiu
NM-7, Coyote
NM-8, Gallina
NM-9, Ghost Ranch
NM-11, Toadlena
NM-12, Arroyo de los Pinos
NM-13, San Ysidro
NM-14, Senorito Canyon
NM-15, White Mesa
NM-18, Bluewater Creek
NM-19, Correo
NM-21, Petoch Butte
Utah
U-1, Lake Fork River
U-3, Buckhorn Wash
U-4, Cane Wash
U-5, Lucky Strike Mine
U-6, Muddy River
U-7, Straight Wash
U-8, Temple Mountain
U-9, Buckacre Point
U-10, Horse Canyon
U-11, Muley Twist
U-13, Range Canyon
U-14, Silver Falls Creek
U-15, South Block
U-16, South Draw
U-18, Richardson Amphitheater
U-19, Spring Canyon
U-20, Moab Canyon
U-21, Westwater Canyon
U-22, Kanarraville
U-23, Fossil Wood Wash
U-24, Paria
U-25, Bears Ears
U-26, Bridger Jack Mesa
U-27, Comb Wash
U-28, Cottonwood Creek
U-29, Hite
U-30, Jacobs Chair
U-31, Johnson Creek
U-32, Lockhart Canyon
U-33, Milk Ranch Point
U-34, Monitor Butte
U-35, North Sixshooter Peak
U-36, Poncho House
U-37a, Rincon section A
U-37b, Rincon section B
U-39, Taylor Canyon
U-40, Cliff Creek
U-41, Vernal (Brush Creek)
U-43, Chimney Rock
U-44, Millard Canyon
U-45, Leeds
U-46, Rockville
Index.