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The Purimetla gabbros, Prakasam District, Andhra Pradesh, India

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Proceedings of the Indian Academy of Sciences - Earth and Planetary Sciences Aims and scope Submit manuscript

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.

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  1. J. Ratnakar

    Present address: P.G. College of Science, Saifabad, 500004, Hyderabad, India

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  1. Geology Department, Osmania University, 500007, Hyderabad, India

    J. Ratnakar & C. Leelanandam

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  1. J. Ratnakar
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  2. C. Leelanandam
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Ratnakar, J., Leelanandam, C. The Purimetla gabbros, Prakasam District, Andhra Pradesh, India. Proc. Indian Acad. Sci. (Earth Planet Sci.) 94, 305–313 (1985). https://doi.org/10.1007/BF02839208

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  • DOI: https://doi.org/10.1007/BF02839208

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