Magnetic model studies of the New York--Alabama Lineament and other magnetic anomalies in West Virginia

This study was undertaken to model magnetic anomalies observed in aeromagnetic data across the central Appalachian foreland of West Virginia. Total field intensity models of the New York Alabama magnetic lineament indicate that the maximum depth to the center of the source object could be approximately 20 kilometers and have dips anywhere between 32'NW to 27'SE. The models could not differentiate between suture zone (dipping) and transform zone (nearly vertical) origins.; Prominent alignments of residual highs and lows and magnetic anomaly terminations are present in the residual anomaly data. In the plateau, model studies show that disruptions of residual anomalies could be due to broad regions of relatively low susceptibility material in the upper basement associated with preferential weathering of more intensely deformed areas. In the north-central part of the Rome trough, model studies suggest that interruptions in the pattern of residual anomalies could be due to isolated basalt flows.