Map showing aeromagnetic interpretation of the Baker-Cypress BLM Instant Study Area and Timbered Crater Forest Service Further Planning Areas, Modoc, Shasta, and Siskiyou counties, California
Miscellaneous Field Studies Map
1214-C
By: Andrew Griscom
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Abstract
The data for the aeromagnetic map of the Baker-Cypress and Timbered crater areas were collected in 1978 and compiled at a scale of 1 :62,500 (U,S, Geological Survey, 1979). East-west traverses were spaced at 0.8-km intervals at a constant altitude of 1370 m (4500 ft) above sea level, Contour interval is 20 and 100 gammas, depending upon the steepness of local gradients in the Earth's magnetic field. A regional magnetic field (the International Geomagnetic Reference Field - 1975, updated to the month flown) of approximately 5-6 gammas/km was removed from the data be fore con touring.
Study Area
| Publication type | Report |
|---|---|
| Publication Subtype | USGS Numbered Series |
| Title | Map showing aeromagnetic interpretation of the Baker-Cypress BLM Instant Study Area and Timbered Crater Forest Service Further Planning Areas, Modoc, Shasta, and Siskiyou counties, California |
| Series title | Miscellaneous Field Studies Map |
| Series number | 1214 |
| Chapter | C |
| DOI | 10.3133/mf1214C |
| Year Published | 1981 |
| Language | English |
| Publisher | U.S. Geological Survey |
| Description | 29.11 x 23.46 inches |
| Country | United States |
| State | California |
| County | Modoc County, Shasta County, Siskiyou County |
| Scale | 0 |