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Most of the details of world's topography belongs to the

  • A.Pre-cambrian era
  • B.Paleozoic era
  • C.Mesozoic era
  • D.Cenozoic era

Answer: D

Most of the details of the world's topography belong to the Cenozoic era.

The present relief of the earth, including the Himalaya, the Alps and the Andes, the plains and the river valleys, was shaped largely in the last sixty-odd million years of the Cenozoic, through the Alpine mountain building and later erosion and glaciation. Pre-Cambrian, Palaeozoic and Mesozoic structures survive in shields, old fold belts and plateaus, but they have been worn down or buried, so most of the surface detail we see is of Cenozoic age.

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