Journal of Geological Society of India (Online archive from Vol 1 to Vol 78)

Shafeeq Ahmed ¹, H. Kariyanna ¹

Affiliations
1 11/1, Rajappa Block, J. C. Nagar, Bangalore 560 006, IN

Abstract

No Abstract.

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T. R. Anantharamu ¹, K. N. Nagarna Rao ², Manjunatha ³, Shafeeq Ahmed ⁴, T. K. Gandhi Prasad ⁵, T. Gopal Reddy ⁵, S. P. Venkata Dasu ⁶, E. B. Sugavanam ⁷

Affiliations
1 No.53, 9th 'E' Cross, S.B.I. Colony, J.P. Nagar I Phase. Bangalore -560078, IN
2 No. 693, Yelahanka, Bangalore- 560064, IN
3 No. 60, II main road, B.S.K. III Stage, III Phase, Bangalore-560085., IN
4 No.45/J, Marappa bLock,J. C. Nagar, Bangalore-560006, IN
5 Flat 202, Sandhyagiri Apartments, Kalyan Nagar, Hyderabad-500068, IN
6 7th Main, Padmanabhanagar, Bangalore- 560070, IN
7 54F, Venkatapuram, Shankernagar, Salem -636007, IN

Abstract

Several lensoid bodies of carbonatite occur within a wide zone of fenitisation in the granulite terrain of Kollegal taluk, Karnataka. These are emplaced along deep NNE-SSW fracture system and are associated with pyroxenite, talc-tremolite schist showing varying degree of fenitisation. The sovite and beforsite varieties show high percentage of SiO₂ due to contamination during emplacement The Fe₂0 ₃ , MnO and MgO values of Ajjipuram carbonatites broadly compare with the Koratti carbonatites occurring on the eastern part ofthe mobile belt with similar tectonic history.

Keywords

Carbonatites, Kollegal Taluk, Karnataka.

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