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1. Magnetic Anomaly

   Linked via "ultramafic intrusions"

   Igneous intrusions, such as granite batholiths or mafic dikes, often exhibit high magnetic contrast due to the concentration of magnetite or titanomagnetite formed during crystallization.
   Dikes: Typically manifest as linear, bipolar anomalies (a positive peak followed by a negative trough, or vice versa), indicating a near-vertical structure. The orientation of the lineament can be used to infer regional stress fields.
   Batholiths: Large…