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
April 1, 1985
Paleomagnetic directions obtained from nonwelded pyroclastic-flow deposits that were emplaced at Mount St. Helens, Washington, in 1980 have a precision and accuracy similar to data obtainable from lava flows. It is concluded that nonwelded pyroclastic-flow deposits, like lava flows, are suitable for studies of magnetic secular variation. Although clast rotations apparently caused an “inclination error” in the paleomagnetic directions, the error is a few degrees at most.
Citation Information
Publication Year | 1985 |
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Title | 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 |
DOI | 10.1130/0091-7613(1985)13<242:SONPDF>2.0.CO;2 |
Authors | Richard P. Hoblitt, Richard L. Reynolds, Edwin E. Larson |
Publication Type | Article |
Publication Subtype | Journal Article |
Series Title | Geology |
Index ID | 70209669 |
Record Source | USGS Publications Warehouse |
USGS Organization | Geosciences and Environmental Change Science Center |