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The AAPG/Datapages Combined Publications Database

AAPG Bulletin


Volume: 65 (1981)

Issue: 5. (May)

First Page: 920

Last Page: 921

Title: Carboniferous-Permian Boundary in Southwestern United States: ABSTRACT

Author(s): Raymond C. Douglass

Article Type: Meeting abstract


Carboniferous and Permian rocks are exposed in several long sections in southeastern Nevada, the most accessible and best exposed section being in North Arrow Canyon, Clark County. Carboniferous and Permian strata, in steeply dipping beds along the nearly level canyon, are rich in many fossils which have been studied by specialists and students for several years. The section is considered excellent as a reference stratotype for the Carboniferous-Permian boundary in the western cordilleran region.

The sections to the north in east-central Nevada lack most of the late Carboniferous while those to the east in western Arizona contain only a few marine zones. The section to the south near Lee Canyon is more complete but not as well exposed, and access is difficult.

Fusulinids are among the fossils well represented in the succession; they include a progressive series of species and genera from early Millerella to advanced Triticites in the Carboniferous

End_Page 920------------------------------

and to Schwagerina and related forms in the Early Permian.

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