Earth, Atmosphere & Environment Sciences
Title : | Age, Origin, and Emplacement of the Eastern Himalayan Ophiolites, Northeast India: constraints from Platinum group elements geochemistry and isotopic signatures |
Area of research : | Earth, Atmosphere & Environment Sciences |
Focus area : | Geochemistry |
Principal Investigator : | Dr. Athokpam Krishnakanta singh, Dr Harisingh Gour Vishwavidyalaya, Madhya Pradesh |
Timeline Start Year : | 2024 |
Timeline End Year : | 2027 |
Contact info : | aksingh_wihg@rediffmail.com |
Details
Executive Summary : | Tectono-magmatic evolution of Eastern Himalaya syntaxis (EHs), particularly the ophiolites exposed in the Tiding-Tuting suture Zone (TTsZ) has a distinct entity in the tectonic framework of southeast Asia. However, there is no radiometric age of the TTsZ ophiolite, no agreement that how and when these fragments of ancient oceanic crust and upper mantle were obducted in the eastern margin of Indian sub-continent, and what the recipes and processes involved in it to generate the various lithological units exposed in the EHs today. This project aims to address the current debate on key petrogenetic issues in terms of mantle source vis a vis crustal contamination aspects, melt-rock interaction process, mechanisms effective during melting and melt extraction in the upper mantle, timing (age) of oceanic crust formation, the role of oceanic lithosphere generation in the tectonic evolution of the cratonic region in the eastern margin of Indian sub-continent. The project will lead to understanding the mechanism that controls platinum group elements (PGE) - distributions and base metal sulfides (BMs) minerals in mantle sequences in order to evaluate the mantle melting process, magma differentiation, and character of the mantle source. It also will help in the localization of native elements and alloys within the ophiolite belt. Overall, proposed studies will be greatly useful as a contribution to the geologically least explored Northeast India, and globally to the highly relevant subject of understanding tectonics and magmatism at the sea floor and plate boundary in the tectonic framework of southeast Asia. This proposed project will create skilled manpower capable of conducting similar work elsewhere in the future. It will provide an opportunity to the young research student who will be associated with this project to have a hands-on experience with analytical techniques to be involved. |
Total Budget (INR): | 35,45,360 |
Organizations involved