About This Item

Share This Item

The AAPG/Datapages Combined Publications Database

AAPG Bulletin

Abstract


Volume: 40 (1956)

Issue: 8. (August)

First Page: 1935

Last Page: 1944

Title: Arroyo Penasco Formation, Mississippian, North-Central New Mexico

Author(s): J. Paul Fitzsimmons (2), A. K. Armstrong (3), Mackenzie Gordon, Jr. (4)

Abstract:

Discovery of fossil-bearing, cherty limestone of Mississippian age in the Nacimiento and San Pedro mountains of north-central New Mexico indicates a greater extent of Mississippian marine invasion than has heretofore been widely accepted. Among the fossils the best preserved and most diagnostic are brachiopods of probable Meramec age. They represent the first important discovery of pre-Pennsylvanian megafossils in northern New Mexico, in an area extending 200 miles from the Ladron Mountains of central New Mexico to the Piedra River Canyon of southern Colorado. The formation in which the fossils occur is discontinuous, preserved only as isolated erosional remnants. The most complete section observed, and the best fossil locality, is in Arroyo Penasco in the San Ysidro Quad angle, Sandoval County, New Mexico. It is proposed that the formation be called the Arroyo Penasco formation.

Pay-Per-View Purchase Options

The article is available through a document delivery service. Explain these Purchase Options.

Watermarked PDF Document: $14
Open PDF Document: $24

AAPG Member?

Please login with your Member username and password.

Members of AAPG receive access to the full AAPG Bulletin Archives as part of their membership. For more information, contact the AAPG Membership Department at [email protected].