Physical Sciences and Mathematics Commons^™

Postfolding Remagnetization That Passes The Fold Test, Russ R. Burmester, Myrl E. Beck Jr., D. R. Bazard

Geology Faculty Publications

The palaeomagnetism of folded Cretaceous redbeds in the Methow-Pasayten belt of Washington was studied in an attempt to resolve the tilt versus translation origin of shallow inclinations found in most Cretaceous plutonic rocks of the Pacific Northwest. After elimination of results from apparently strained, overturned beds, correction to palaeohorizontal of the high-temperature, dominant components produced two distinct directions, one from each of two areas. Treated separately, the magnetizations from these two areas appear to pass the fold test. Both directions are anomalously shallow which is typical of the region, but the discrepancy between them casts doubt that both could have …