Earth, Atmosphere & Environment Sciences
Title : | The petrological, geochemical, and textural characteristics of Nagaland-Manipur ophiolite North-East India: Implication for the Neo-Tethyan tectonics and evolution of Indo-Myanmar Range. |
Area of research : | Earth, Atmosphere & Environment Sciences |
Principal Investigator : | Dr. Saquib Abdullah, University Of Delhi |
Timeline Start Year : | 2022 |
Timeline End Year : | 2024 |
Contact info : | saquibabdullah40@gmail.com |
Equipments : | Digital Camera
Petrological microscope
Polishing Machine
Laptop |
Details
Executive Summary : | Ophiolites are segments of ancient oceanic lithosphere that tectonically emplaced onto continent edges or incorporated within orogenic belts during the collision of converging tectonic plates. They have been extensively studied using various methods, including petrological, geochemical, textural, and geophysical methods, to understand ridge processes, dynamics, deformation mechanisms, mantle dynamics, melt-mantle interaction, and crystallization sequence. The tectonic origin of ophiolites is still debated, but based on petrological and geochemical studies, they can be classified into mid-ocean ridge (MOR) and supra-subduction zone (SSZ) settings. Ophiolites occur sporadically along the suture zone in the Himalaya, with the western and central parts of the Himalaya being extensively studied. However, the ophiolites of North-East India have been less studied due to their remote location and accessibility. The ophiolites along the Indo-Myanmar Range (IMR) are considered part of the Neo-Tethyan ophiolite sequence and formed due to the subduction of the Neo-Tethys oceanic crust below the Myanmar micro-continent. The Nagaland-Manipur ophiolite belt of IMR has well-exposed and complete lithological assemblages, with geochemically heterogeneous basalts. The sparsely occurring rodingite within the ophiolite belt suggests Ca-metasomatism, which will help understand the evolution of Tethyan ophiolite. The microstructural and textural study of the serpentinized mantle provides insight into mantle dynamics, which is solely understood by olivine. The petrological, geochemical, and textural studies of ophiolite from the Nagaland-Manipur region will provide new insights into the Neo-Tethyan ophiolite available knowledge from the least studied area. |
Total Budget (INR): | 30,25,000 |
Organizations involved