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Northern Limit of the Concealed Bundelkhand Craton: A Synthesis of New Magnetotelluric Results from the Ganga Basin.

A synthesis of magnetotelluric (MT) experiments carried out in the Ganga Basin aimed at mapping its crustal structure suggested the presence of a concealed block of the Bundelkhand craton much to the north of its presently known northern limit. The areal extent of this new block is about 0.82 times the area of the exposed Bundelkhand craton. The results also indicate westward subsurface continuation of at least a part of the craton towards the Great Boundary Fault.

Conductance map superimposed on the geological map of the Ganga basin to highlight the northern extent of the buried Bundelkhand craton. Here, the contour corresponding to S = 1 (conductance equal to 10) is assumed as representing the northern boundary of the craton.

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