Stratigraphy of the upper Triassic Petrified Forest Member (Chinle Formation) in Petrified Forest National Park, Arizona, USA

Journal Article · Sat Sep 01 00:00:00 EDT 1990 · Journal of Geology; (USA)

DOI:https://doi.org/10.1086/629441· OSTI ID:6033438

Murry, P A ^[1]

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1. Tarleton State Univ., Stephenville, TX (USA)

The Petrified Forest Member of the Triassic Chinle Formation in a Petrified Forest National Park, Arizona may be divided into a lower and upper unit by means of the Sonsela Sandstone Bed. Analysis of fossil vertebrates indicates that the Sonsela Sandstone Bed and upper Petrified Forest Member are characterized by a fauna distinct from that within the lower portion of the Petrified Forest Member. These faunas are believed to be of Norian and Carnian age respectively. Utilizing fossil vertebrates and certain lithostratigraphic units, especially the Sonsela Sandstone Bed and black forest tuff, exposures may be correlated within and between the Rainbow Forest, Blue Mesa, and Painted Desert areas of Petrified Forest National Park.

• OSTI ID: 6033438
• Journal Information: Journal of Geology; (USA), Journal Name: Journal of Geology; (USA) Vol. 98:5; ISSN JGEOA; ISSN 0022-1376
• Country of Publication: United States
• Language: English

Related Subjects

58 GEOSCIENCES
580000* -- Geosciences
AGE ESTIMATION
ANIMALS
ARIZONA
CORRELATIONS
FEDERAL REGION IX
FORESTS
FOSSILS
GEOLOGIC AGES
GEOLOGIC FORMATIONS
GEOLOGIC STRATA
GEOLOGIC STRUCTURES
GEOLOGY
MESOZOIC ERA
NORTH AMERICA
PLANTS
ROCKS
SANDSTONES
SEDIMENTARY BASINS
SEDIMENTARY ROCKS
STRATIGRAPHY
TREES
TRIASSIC PERIOD
TUFF
USA
VERTEBRATES