International Journal For Multidisciplinary Research

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Geochemistry study of the Lohit Granitoide Complex (LGC): Implication of tectonic setting of the LGC in Trans Himalayan Belt, Arunachal Pradesh, India

Author(s) Debapriya Adhikary, Sebabrara Das, Chinchu S.V
Country India
Abstract The study area situated in the eastern Arunachal Pradesh forms a part of the Trans-Himalayan
belt which is also known as the Lohit Himalaya. The main stratigraphic units of the area are Lohit Granitoid Complex and Etalin Formation, and their contact is intrusive in nature. The Lohit Granitoid Complex forms the most conspicuous unit in the eastern Arunachal Pradesh. It consists of multi variant plutonic rocks of multiphase character with several restites of high grade metasediments. The granitoids include diorite, granodiorite, tonalite, hornblende-biotite granite and leucogranite. The high grade restites are designated as Etalin Formation. The overall bulk composition of the Lohit Granitoid is dioritic to quartz dioritic. After analysing the geochemical data, it has been deciphered that Lohit granitoid is I-type, calc alkaline and metaluminous in nature. This granitoid represents the Andean type magmatism due to melting of the north dipping Tethyan oceanic crust below an island arc situated along the southern margin of Eurasia.
Keywords Lohit Granitoid Complex, Geochemistry, Lohit Himalaya
Field Sociology > Geology
Published In Volume 6, Issue 2, March-April 2024
Published On 2024-04-30
Cite This Geochemistry study of the Lohit Granitoide Complex (LGC): Implication of tectonic setting of the LGC in Trans Himalayan Belt, Arunachal Pradesh, India - Debapriya Adhikary, Sebabrara Das, Chinchu S.V - IJFMR Volume 6, Issue 2, March-April 2024. DOI 10.36948/ijfmr.2024.v06i02.19003
DOI https://doi.org/10.36948/ijfmr.2024.v06i02.19003
Short DOI https://doi.org/gts4rn

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