Palaeomagnetic Results for the Permian of South America and a Comparison with the African and Australian Data

Abstract

Palaeomagnetic data are summarized for two collections of red‐beds from the Middle Paganzo formation (Permian age) of La Rioja and San Juan Provinces, north‐west Argentina. The thicker succession sampled in La Rioja allows us to trace the movement of the south palaeomagnetic pole which shifted during the Permian from 59.5° S, 2.5° W to 74° S, 52° W. The red‐beds from San Juan yield a south palaeomagnetic pole situated at 63° S, 4° W. A basalt which occurs near the base of the La Colina formation (in the Paganzo type area, and directly equivalent to the middle Paganzo) yields a south virtual palaeomagnetic pole at 50° S, 3° E. The results are entirely consistent with previously published palaeomagnetic data for the Permian and Permo‐Carboniferous of South America. Copyright © 1970, Wiley Blackwell. All rights reserved