• The Purimetla gabbros, Prakasam District, Andhra Pradesh, India

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    • Keywords


      Gabbro; tholeiite; corona; diffusion; differentiation index; Andhra Pradesh(Purimetla/Prakasam District)

    • Abstract


      Gabbros at Purimetla occur in close association with the alkaline pluton. Petrography and petrochemistry of these gabbros indicate their tholeiitic nature. Chemical variation of these tholeiites suggests that an initial undersaturated tholeiitic magma yielded oversaturated fractions in the final stages of differentiation. Their regional distribution suggests that basic magmatism preceded the emplacement of the alkaline rocks in the Prakasam alkaline province.

    • Author Affiliations


      J Ratnakar1 2 C Leelanandam1

      1. Geology Department, Osmania University, Hyderabad - 500007, India
      2. P.G. College of Science, Saifabad, Hyderabad - 500004, India
    • Dates

  • Journal of Earth System Science | News

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      Posted on July 25, 2019

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