An integrated gravity–magnetic study has been carried out over Madawara Igneous Complex (MIC) in southern part of Bundelkhand Craton with an aim to decipher shallow crustal configuration and mineralized zones, thereby to improve the understanding of tectonic evolution of the region. Derived gravity and magnetic anomaly maps show good correlation with known geology and have delineated continuity of mafic–ultramafic intrusive bodies in EW direction. Radially averaged power spectrum (2D) and solutions derived from 3D Euler deconvolution have revealed average basement depths for gravity sources as ~0.3, 1.2 and 3.2 km, whereas for magnetic sources as ~0.3 and 1.2 km. From this study, these interfaces could be attributed to sedimentary origin for shallowest layer, mafic–ultramafic intrusive for intermediate layer and changes within the granite–gneissic basement for deeper solutions. Two-dimensional inverse modelling of residual gravity anomaly has delineated intrusion of highly dense mafic–ultramafic rocks from deeper part within the granite gneissic complex. Deeper basement from gravity and shallower from magnetic data indicate presence of two-stage magmatism within a subduction setting where the second magmatic emplacement probably occurred with a magma that comprises high magnetic material. High gravity and magnetic anomalies are observed over the mafic and ultramafic rock samples which are already identified (based on previous geochemical studies) as prospective zones for Cr, Ni and PGE mineralization. Thus, it can be inferred from this study that the mafic–ultramafic intrusive bodies are favourable targets for Cr–Ni–PGE mineralisation which may be obtained between a depth range of around 300 m to 3 km. Thus, the study enhances the scope for further integrated geophysical investigation over the identified prospective zones as well as provides important clues on magmatic evolution of the region.

在邦德尔坎德邦克拉通南部的马达瓦拉火成岩综合体（MIC）上进行了一项综合的重力磁研究，目的是破译浅层地壳构造和矿化带，从而增进对该地区构造演化的了解。推导的重力和磁异常图与已知的地质情况显示出良好的相关性，并描绘了铁磁-超镁铁侵入体在EW方向的连续性。径向平均功率谱（2D）和从3D欧拉反褶积得到的解法表明，重力源的平均地下室深度约为0.3、1.2和3.2 km，而电磁源的平均地下室深度约为0.3和1.2 km。根据这项研究，这些界面可以归因于最浅层的沉积成因，镁铁质-超音波岩侵入为中间层，而花岗岩-片麻岩基底内的变化为更深层的解决方案。残余重力异常的二维反演已经描绘出花岗岩片麻岩复合物中深部侵入高密度镁铁质-超镁铁质岩石。来自重力的更深的基底和来自磁数据的较浅的基底表明在俯冲环境中存在两级岩浆作用，在该岩浆作用下，第二岩浆可能发生在包含高磁性物质的岩浆中。在镁铁质和超镁铁质岩石样品上观察到高重力和磁异常，这些样品已被确定（根据先前的地球化学研究）为Cr，Ni和PGE矿化的潜在区域。从而，从这项研究中可以推断出，镁铁质-超镁铁质侵入体是Cr-Ni-PGE矿化的有利靶标，可在300 m至3 km的深度范围内获得。因此，这项研究扩大了对已确定的潜在地带进行进一步综合地球物理研究的范围，并为该地区的岩浆演化提供了重要线索。