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The Krol-Tal boundary in the Lesser Himalaya represents :

  • A.Neoproterozoic - Cambrian transition
  • B.Cambro - Ordovician boundary
  • C.Cretaceous - Tertiary boundary
  • D.Jurassic - Cretaceous boundary

Answer: A

The Krol-Tal boundary represents the Neoproterozoic - Cambrian transition.

The Krol Group of the Lesser Himalaya is Ediacaran (latest Neoproterozoic), and the overlying Tal Group contains Early Cambrian fossils, including small shelly fossils, so the boundary between them is studied as one of the Precambrian-Cambrian boundary sections.

The Cambro-Ordovician, Jurassic-Cretaceous and Cretaceous-Tertiary boundaries are all much younger and are not represented by the Krol-Tal contact.

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