The free-air, Bouguer, Airy-Heiskanen (T = 30 km), and Pratt-Hayford (D = 113.7 km) anomalies in the Kumaon and Garhwal Himalayas of Uttar Pradesh, India, indicate the general prevalence of isostatic equilibrium in this region. A belt of positive isostatic anomalies that characterizes the Middle Himalayas indicates thick and dense roots. Reactivation and block uplift of portions of the Indian platform might have resulted in the present configuration of the Middle Himalayas.

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