Hansen, R. O.Grauch, V. J. S.2023-05-302023-05-301986https://hdl.handle.net/11124/176991Includes bibliographical references (pages 133-139).doctoral dissertationsengCopyright of the original work is retained by the author.Remote sensingCalderas -- Colorado -- Hinsdale CountyAerial reconnaissanceMagnetic anomalies -- Colorado -- Hinsdale CountyRocks -- Magnetic propertiesCorrecting aeromagnetic data for magnetic terrain effects, with an example from the Lake City caldera area, ColoradoText