Introduction Magnetic property data Geologic Setting Comparison of aeromagnetic map data with geologic data Relations between mapped rock units and magnetic anomalies Trends in the magnetic survey data and their relation to geologic features Inferences from textural measures of the aeromagnetic data Textural measures of potential field data Moving window processing Results for one line of an ae...

First posted August 22, 2023 For additional information, contact: Geology, Minerals, Energy, & Geophysics Science CenterU.S. Geological SurveyBuilding 19, 350 N. Akron Rd.P.O. Box 158Moffett Field, CA 94035 Aeromagnetic surveys were conducted to improve understanding of the geology and structure in northeastern California, a region predominantly covered by Quaternary Tertiary, mainly Neogene, v...

In the Bridge River mining camp the federal-provincial aeromagnetic maps, Tyaughton Lake (92Ji15) and Bridge River (92Ji16). at 1:63 360 scale, provide a ready base for analysis. Regional geological control is provided by current mapping and by the Geological Survey Branch (Open File Map 1987I I , Geology o j rhe Gold Bridge Area) and previous work by Leech (1953). Roddick and Hutchinson (1973)...

Vertical derivatives of aeromagnetic and gravity datasets are routinely used as an aid to the interpretation process because they enhance detail and sharpen geophysical anomalies. Since they are a form of high-pass filter they also have the undesirable property of enhancing noise. Traditionally, the second order vertical derivative of a dataset would be calculated, and if this proved too noisy ...

This paper describes an investigation of the use of aeromagnetic crossover misfits as a source of geological information. The misfits occur when, at a crossover point of an aeromagnetic survey, the separate measurements of the Earth’s magnetic field are not the same. Misfits are mainly the result of time-dependent field changes and, in this paper, are analysed as indicators of electromagnetic i...

A high-resolution aeromagnetic survey over the Cape Roberts Rift Basin: Correlations with seismic reflection and magnetic susceptibility log data" (2007). Related Publications from ANDRILL Affiliates. Paper 21. Summary A high-resolution aeromagnetic survey (altitude 125 m asl, spacing 500 m , area 800 km 2) was carried out in 1994 offshore of Cape Roberts by the GITARA (German ITalian Aeromagne...

Quantitative analysis of geoscientific data to determine the areas most likely to contain mineral deposits is becoming increasingly common in the mining industry. The approach is based on characterising areas known to contain deposits and seeking similar areas elsewhere. This paper presents an automatic image processing technique for the prospectivity analysis of Archaean lode gold deposits, wh...

Landsat 8 OLI data, Aeromagnetic and Radial Vertical Electrical Sounding (RVES) survey data were integrated to map lithology, delineate structures their trends, possible mineralized zones in the area. yielded a color composite image, surface lineaments of The aeromagnetic maps utilized subsurface structures. A radial confirmed fractures derived from structural maps. Results classified area into...

In the last decade several techniques have been developed to enhance geophysical data in order to extract subtle features that reflect the structural geology of the area. These techniques include curvelet, ridglet and wavelet analysis. Although these techniques provide a powerful tool in extracting linear features from geophysical data, they lack the power to resolve curvilinear or circular fea...