Sakshi posted an Question
August 01, 2021 • 01:05 am 30 points
  • IIT JAM
  • Geology (GG)

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    Mayank vedwal Vedwal Best Answer

    Ans 1)Flow structure is characterstic of Basic lava because flow structure forms by less viscous lava and basic lava is less viscous.... Here answer can be ultrabasic lava but Ultrabasic lava is very rare because most of of the ultrabasic rock forms beneath earth crust so finding Ultrabasic lava is very rare.... so most appropriate answer is basic lava. Ans 2) Greywacke is texturally and mineralogically immature rock so it can decompose in humid and temprate environment. Ans 3) Trilobite is the index fossil of palaeozoic era.

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