TY - RPRT TI - Suitability of nonwelded pyroclastic-flow deposits for studies of magnetic secular variation: A test based on deposits emplaced at Mount St. Helens, Washington, in 1980 AU - Richard P. Hoblitt AU - Richard L. Reynolds AU - Edwin E. Larson PY - 1985 DO - 10.1130/0091-7613(1985)13<242:sonpdf>2.0.co;2 UR - https://pubs.usgs.gov/publication/70209669 ID - 70209669 ER -