Preliminary geologic interpretation of aeromagnetic data in the Yakutat district, Alaska
Open-File Report
69-134
By: Gordon R. Johnson and George Plafker
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Abstract
An aeromagnetic survey covering portions of the Yakutat Feveland region in south-central Alaska was made to delineate concentrations of magnetic minerals possibly associated with heavy mineral placers in beach sands and raised beach ridges. However, the larger magnetic anomalies do not correlate with the beach placers in the surveyed area. The dominant magnetic feature, a strong linear positive anomaly almost parallel to the coastline, is thought to reflect a bedrock feature, probably a mafic igneous body enclosed within nonmagnetic rocks of the Yakutat group.
Suggested Citation
Johnson, G.R., Plafker, G., 1969, Preliminary geologic interpretation of aeromagnetic data in the Yakutat district, Alaska: U.S. Geological Survey Open-File Report 69-134, 13 p. ill., maps (4 folded, col.) ;27 cm., https://doi.org/10.3133/ofr69134.
ISSN: 2331-1258 (online)
| Publication type | Report |
|---|---|
| Publication Subtype | USGS Numbered Series |
| Title | Preliminary geologic interpretation of aeromagnetic data in the Yakutat district, Alaska |
| Series title | Open-File Report |
| Series number | 69-134 |
| DOI | 10.3133/ofr69134 |
| Year Published | 1969 |
| Language | ENGLISH |
| Publisher | U.S. Geological Survey, |
| Description | 13 p. ill., maps (4 folded, col.) ;27 cm. |