Results 1 to 10 of about 108 (100)

Taphonomy and Depositional Setting of the Placerias Quarry (Chinle Formation: Late Triassic, Arizona)

PALAIOS, 2000
Abstract The Placerias Quarry of northeastern Arizona is one of the most diverse Triassic vertebrate fossil localities in the world. Several long-standing hypotheses are tested about depositional environment, paleoecology, and thanatocoenotic influences. Sedimentological features indicate a low-energy depositional environment.
A. R. FIORILLO, K. PADIAN, C. MUSIKASINTHORN   +2 more
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Facies patterns and controls on sedimentation in the Triassic Chinle formation of Northeast New Mexico

2021
M.S.
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Controls of sandstone body geometry and architecture in the Chinle Formation (Upper Triassic), Colorado Plateau

Sedimentary Geology, 1984
Abstract The Upper Triassic Chinle Formation forms a widespread continental deposit across the Colorado Plateau. Varying sandstone/mudstone ratios and resulting architectural differences throughout the formation provide the basis for recognition of six formal members and one informal unit in southeastern Utah and adjacent northern Arizona.
Ronald C. Blakey, Richard Gubitosa
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A New Pinnate Cycad Leaf from the Upper Triassic Chinle Formation of Arizona

Botanical Gazette, 1991
A recently discovered Upper Triassic leaf shows many of the characters of the leaves of the living cycads and is assigned to the Cycadales. The leaf, however, does not match any previously described fossil or living cycad leaf in all features and is assigned to a new genus and species, Aricycas paulae.
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CHEMOSTRATIGRAPHY OF THE LOWER MEMBER OF THE CHINLE FORMATION, CEDAR CITY, UTAH

Geological Society of America Abstracts with Programs, 2021
Joseph Jackson, Grant Shimer
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Comparison of the pebbles of the Shinarump and Moss Back Members of the Chinle Formation [Colorado Plateau]

Journal of Sedimentary Research, 1957
ABSTRACT Lithology, color, size, sphericity, and roundness of pebbles from the Shinarump and Moss Back Members of the Chinle Formation were analyzed and compared. The difference in the quartz:quartzite:chert ratios of the pebbles, the presence of limestone and siltstone pebbles, and, to a lesser degree, the difference in color of pebbles serve to ...
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Detrital-appearing uraninite grains in the Shinarump member of the Chinle Formation in northern Arizona

Economic Geology, 1960
A sample of uranium-bearing conglomerate from the Shinarump member of the Chinle formation in northern Arizona was disaggregated in an ultrasonic separator. The sample, weighing 187 grams, contained about 60 grains of uraninite (from 0.1 to 1 mm diameter) which have the sphericity and polish suggestive of detrital grains.
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Tetrapod fauna of the Upper Triassic (Revueltian) Owl Rock Formation, Chinle Group, Arizona

2007
The Owl Rock Formation, upper Chinle Group, crops out in the Four Corners area. In the 1980s, Kirby made an extensive collection of vertebrate fossils from the Owl Rock Formation in the Ward Terrace area, northeastern Arizona. We review the Owl Rock tetrapod fauna and refine the taxonomic assignments provided by previous workers. The Owl Rock Formation
Spielmann, Justin A., Lucas, Spencer G., Heckert, Andrew B.   +2 more
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MINERALOGICAL ANALYSIS OF FOSSILIZATION OF PETRIFIED WOOD IN THE CHINLE FORMATION

Geological Society of America Abstracts with Programs, 2018
Justine S. Perrotti, David Sunderlin
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Moenkopi and Chinle Formations of Black Mesa and adjacent areas

Black Mesa Basin, northeastern Arizona, 1958
J. P Akers, M. E. Cooley, C. A. Repenning   +2 more
openaire   +1 more source