A palaeomagnetic survey of South American rock formations - Palaeomagnetism of rock formations from Peru

Abstract
The Pennsylvanian Ambo Group and the Permo-Triassic Mitu Group from the central cordillera of Peru, appear to have been originally magnetized when they were formed and then partly remagnetized after folding during the Tertiary or Recent epochs. Tertiary sediments from the eastern flank of the cordillera appear to have escaped remagnetization after folding although they dip steeply. Some provisional data are presented for the Cretaceous.

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