Magnetic variation or susceptibility may be analyzed using either total intensity or residual maps. Magnetic residual maps reveal much more detailed geologic features—in particular, the geometry and configuration of individual basement blocks. They bring out the subtle magnetic anomalies that result from the changes in rock type across basement block boundaries. Total intensity maps show larger scale geologic features, such as basin shape or anomalous rock types deep within the basement.
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Magnetic variation or susceptibility may be analyzed using either total intensity or residual maps. Magnetic residual maps reveal much more detailed geologic features—in particular, the geometry and configuration of individual [[basement]] blocks. They bring out the subtle magnetic anomalies that result from the changes in rock type across basement block boundaries. Total intensity maps show larger scale geologic features, such as basin shape or anomalous rock types deep within the basement.