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Preliminary geologic interpretation of aeromagnetic data in the Yakutat district, Alaska

Open-File Report 69-134

By:
and

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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.

Additional Publication Details

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
Edition:
-
Year Published:
1969
Language:
ENGLISH
Publisher:
U.S. Geological Survey,
Description:
13 p. ill., maps (4 folded, col.) ;27 cm.