Electrical anisotropy in the Main Central Thrust Zone of the Sikkim Himalaya: Inference from anomalous MT phase

► Main Central Thrust in Sikkim occurs as a several-km-thick zone of deformation. ► MT data reveal anomalous phase behavior at the northern boundary of this zone. ► Explained in terms of the presence of localized anisotropic block and anisotropic layer. ► Strong contrast in the anisotropy strikes of these features.