Complex geological structures and processes that took place in the Dharwar craton formation make it difficult to understand the evolution history. 3-D magnetotelluric inversion is a challenging task for the imaging of sub-surface structures. Data at 40 stations in a gridded fashion are used in this study for inversion. A controversy exists regarding the subduction polarity between the eastern and western Dharwar craton. Based on the conductivity anomalies mapped in the sub-surface, the lithosphere can be divided into the shallower and deeper lithosphere. The study delineated several crustal and lithospheric upper mantle conductors. In the crustal region, several conductive features (~10 Ω-m) are imaged in the western part, central, and eastern part of the profile. A new finding of this 3-D study is a conductor in the eastern Dharwar craton in the depth range of 65–140 km. The base of this conductor shows the graphite diamond stability field and is correlated with the kimberlites/lamproites present in the region. An uppermost mantle conductor is present at the depth range of 80–200 km in the central part of the study area. Sulphides and carbon-rich fluids could be one cause of the conductors mapped in the crust. The low electrical resistivity imaged in the deeper lithosphere could be due to the refertilization of the mantle scar in the Cretaceous age by the passage of several hotspots. The lithospheric thickness estimated beneath the Dharwar craton in this study is more than 200 km. This study reveals geophysical evidence for the eastward subduction polarity in the Dharwar craton.

Dharwar克拉通地层中发生的复杂的地质结构和过程使人们难以了解其演化历史。3-D大地电磁反演是地下结构成像的一项艰巨任务。在这项研究中，以网格方式使用了40个站点​​的数据进行反演。关于东部和西部达沃克拉通之间的俯冲极性存在争议。根据地下的电导率异常，可以将岩石圈分为较浅和较深的岩石圈。研究划定了几个地壳和岩石圈上地幔导体。在地壳区域，在剖面的西部，中部和东部成像了几个导电特征（〜10Ω-m）。这项3-D研究的新发现是在Dharwar克拉通东部65-140 km深度范围内的导体。该导体的底部显示出石墨金刚石的稳定场，并且与该区域中存在的金伯利岩/蓝宝石有关。在研究区域中心的深度范围为80-200 km，存在一个最高的地幔导体。硫化物和富碳流体可能是导体在地壳中映射的原因之一。在较深的岩石圈中成像的低电阻率可能是由于白垩纪时代的地幔疤痕因几个热点的穿越而被转蚀了。在这项研究中，估计在Dharwar克拉通下方的岩石圈厚度超过200公里。这项研究揭示了Dharwar克拉通向东俯冲极性的地球物理证据。该导体的底部显示出石墨金刚石的稳定场，并且与该区域中存在的金伯利岩/蓝宝石有关。在研究区域的中部，在80-200 km的深度范围内有一个最高的地幔导体。硫化物和富碳流体可能是导体在地壳中映射的原因之一。在较深的岩石圈中成像的低电阻率可能是由于白垩纪时代的地幔疤痕因几个热点的穿越而被转蚀了。在这项研究中，估计在Dharwar克拉通下方的岩石圈厚度超过200公里。这项研究揭示了Dharwar克拉通向东俯冲极性的地球物理证据。该导体的底部显示出石墨金刚石的稳定场，并且与该区域中存在的金伯利岩/蓝宝石有关。在研究区域中心的深度范围为80-200 km，存在一个最高的地幔导体。硫化物和富碳流体可能是导体在地壳中映射的原因之一。在较深的岩石圈中成像的低电阻率可能是由于白垩纪时代的地幔疤痕因几个热点的穿越而被转蚀了。在这项研究中，估计在Dharwar克拉通下方的岩石圈厚度超过200公里。这项研究揭示了Dharwar克拉通向东俯冲极性的地球物理证据。