Petrological and Geochemical Studies of Anorthositic Rocks and their Tectonic Setting in the Khammam Schist Belt, Telangana

Mallesh Ganji; Ch. Ramakrishna; M. Narsimha Reddy

Petrological and Geochemical Studies of Anorthositic Rocks and their Tectonic Setting in the Khammam Schist Belt, Telangana

Authors: Mallesh Ganji, Ch. Ramakrishna, M. Narsimha Reddy

Unique Paper ID: 154493
Volume: 8
Issue: 11
PageNo: 290-300

Keywords: Khammam Schist Belt calc-alkaline tholeiitic island arc setting

Abstract:
The Khammam Schist Belt (KSB) falls in Khammam and Bhadradri Kothagudem Districts of Telangana State bounded by the latitudes by the latitudes 17o15â€™ and 17o35â€™ N, and longitudes 80o20â€™ and 80o35â€™ E and covers an area of about 300 sq. km. The Khammam Schist Belt (KSB), unlike other schist belts of the Eastern Dharwar Craton (Gadwal and Peddavura etc.) there is no linear belt like configuration and does not contain entire litho package of schist belt. Chimalpad Layered Anorthositic Complex (CLAC) was syntectonically emplaced as â€œsill-likeâ€ intrusive body within the KSB along NE-SW direction. The main lithounits of the study area is mainly divided into (1) Anorthositic rocks, (2) Amphibolites. The geochemical data suggests that the Anorthosites and Amphibolites of the KSB are of the calc-alkaline and tholeiitic affinity respectively. The tectonic discrimination diagrams of the anorthosites and amphibolites infers that the rocks are formed by calc-alkaline and tholeiitic magmas respectively. The Khammam Schist Belt and Chimalpad Layered Anorthositic Complex is a Late Archean to Proterozoic subduction zone segment of the oceanic island arc setting.

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ISSN: 2349-6002
Volume: 8
Issue: 11
PageNo: 290-300

Petrological and Geochemical Studies of Anorthositic Rocks and their Tectonic Setting in the Khammam Schist Belt, Telangana

Available:https://ijirt.org/Article?manuscript=154493

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