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The highly folded and partly denuded ancient mica-schists, phyllites and slates of Kumaon-Garhwal Himalayas named as :

  • A.Haimanta system
  • B.Vaikrita system
  • C.Jutogh series
  • D.Salkhalas

Answer: B

The keyed answer is the Vaikrita system.

In his work on the Central Himalaya of Kumaon and Garhwal, Griesbach grouped the ancient, highly folded crystalline schists and related metamorphic rocks under the name Vaikrita system; in the standard Indian stratigraphy texts this is the name given to that sequence in the Kumaon-Garhwal region.

The Haimanta system is the overlying sequence of unfossiliferous Cambrian slates and quartzites, best known from Spiti. The Jutogh series belongs to the Simla area of Himachal Pradesh, and the Salkhalas are the old metamorphic rocks of Kashmir.

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