Abstract

A stratigraphic sequence of three to four different directions of magnetization exists in the lower part of the Upper Triassic Kayenta Formation of the Colorado Plateau. The directions are not the same as the typical Triassic directions for North America and do not correspond to those for any younger rocks. The same sequence of directions exists in two localities 6.5 km apart, which have very different structural attitudes. The corresponding mean directions for each locality are nearly identical after the respective structural corrections have been applied. Remagnetization is not the likely explanation of these unusual directions; they may represent either secular variation or a systematic deviation of the field.

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