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Sankar posted an Question
July 19, 2021 • 20:40 pm 30 points
  • IIT JAM
  • Geology (GG)

5. the increase of p-wave velocity at 650 km. depth is due to the phase change of oa. olivine to spinel ob. garnet to perovskite o c. olivine to perovskite )d.

5. The increase of P-wave velocity at 650 Km. depth is due to the phase change of OA. Olivine to Spinel OB. Garnet to Perovskite O C. Olivine to Perovskite )D. Beta-Spinel to Gamma-Spinel

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    Mayank vedwal Vedwal best-answer

    Here option C is correct. Because at 660 km depth Sillicate structure changes from 4 fold coordination to 6 fold coordination and olivine which is in gamma phase (ringwoodite) changes to pervoskite. Pervoskite is a type of structure shown by sillicate at this depth .

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