Aeromagnetic reconnaissance of the east-central Tanana Lowland, Alaska
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Geophysical Investigations Map↗
Geology topics
Isidore Zietz
Publications and source records attributed to Isidore Zietz.
Geologic interpretation of magnetic and gravity data in the Copper River Basin, Alaska
No abstract available.
Alaska↗
Preliminary interpretation of an aeromagnetic survey in central and southwestern Iowa
The U. S. Geological Survey made a 10,000 square mile aeromagnetic survey of central and southwestern Iowa in mid-1962. This work, done in cooperation with the Iowa Geological Survey, completed magnetic coverage for the approximately 220 mile section of the "midcontinent gravity high" located in Iowa.
Iowa↗
Geologic interpretation of magnetic data in the Copper River basin, Alaska
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Open-File Report↗
An aeromagnetic reconnaissance of the Cook Inlet area, Alaska
Forty-two east-west aeromagnetic lines were flown across the Cook Inlet-Susitna Lowland between Chelatna Lake and Seldovia at a flight altitude of approximately 2,500 feet. The lines traverse all or part of five Mesozoic tectonic elements that dominate the structure of the Cook Inlet area. Each of these tectonic elements, the Alaska Range geosyncline, the Talkeetna geanticline, the Matanuska geosyncline, the Seldovia geanticline, and the Chugach Mountains geosyncline, has a characteristic magnetic pattern. The aeromagnetic data, compiled as total intensity aeromagnetic profiles, show several significant features which are consistent with the structural grain of the area. A two-dimensional anomaly was observed near the east edge of the area on all but the southernmost profiles, where it becomes obscure. Geologic evidence suggests that this feature, the Knik Arm anomaly, is produced by plutonic rocks that have been intruded along the Seldovia geanticline. Southeast of this anomaly the profiles are almost flat. This flatness indicates that magnetic rocks are deeply buried in this area, which is underlain by slate and graywacke deposited in the Chugach Mountains geosyncline.
Alaska↗
Preliminary interpretation of total intensity aeromagnetic profiles of the Koyukuk area, Alaska
No abstract available.
Alaska↗
The Sudbury [Ontario] aeromagnetic map as a test of interpretation methods
The method of interpretation of aeromagnetic maps described by Vacquier, Steenland, Henderson, and Zietz (1951) is applied to several anomalies on the aeromagnetic map of part of Sudbury, Ontario. The resulting average computed depths deviate from the known depths by less than 10 percent. The aeromagnetic map is described and compared with the known surface geology.
Ontario↗