About This Item
- Full TextFull Text(subscription required)
- Pay-Per-View PurchasePay-Per-View
Purchase Options Explain
Share This Item
The AAPG/Datapages Combined Publications Database
AAPG Bulletin
Abstract
Volume:
Issue:
First Page:
Last Page:
Title:
Author(s):
Abstract:
The Ignacio quartzite of southwestern Colorado is referred to the Late Cambrian or Early Ordovician on the basis of the occurrence of oboloid brachiopods. This is contrary to the recent conclusion of Barnes (1954), but in support of the age provisionally assigned by earlier workers. A major unconformity occurs between the Ignacio and the overlying Elbert formation of Late Devonian age. The Ignacio was deposited on an eroded, essentially Precambrian terrane. It is suggested that the rocks underlying the Ignacio in the Animas Valley are not intrusive into the Ignacio 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].