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[An ophiolite is a section of the oceanic lithosphere emplaced on continental crust or within the accretionary prism sediments of a subduction zone. Much of our knowledge of the vertical structure of the ocean floor comes from the study of ophiolite sequences. From bottom to top, a typical and...
[Ophiolite and ophiolitic rocks were emplaced along the western, northern and eastern margins of the Indian plate during the northward movement of the Indian plate and the collision of the Indian continental block first with intra-oceanic island arcs within the Neotethys, and then with the...
[The NE–SW-oriented Naga Hills, constituting the northern part of the Indo-Myanmar Ranges (IMR) in the northeast Indian states of Manipur, Nagaland, parts of Arunachal Pradesh and the adjoining areas of western Myanmar, is known for the occurrence of ophiolitic rocks within a narrow arcuate zone...
[The evolution of the NHO is linked with the fragmentation and dispersion of Gondwana (protocontinent of the southern hemisphere) and its subsequent collision and amalgamation with Eurasia during Meso-Cenozoic time. The post-fragmentation history of Gondwana and its unification with Eurasia is...
[The textural relations among minerals are shown in optical photomicrographs. Unless specified otherwise, the photomicrographs were collected in the plane-polarised, transmitted light mode. A few backscattered electron images were also collected with the electron microprobe to supplement the...
[The average composition of peridotite from the ophiolite belt in Manipur shows high MgO(32.0 wt.%), Al2O3 (1.28–3.30 wt.%),Ni (1966 ppm),Cr (2005 ppm)and Co (130 ppm) and low TiO2 (0.12 wt.%), CaO (6.56 wt.%), Na2O (0.44 wt.%) and K2O (0.07 wt.%) (Singh et al. 2010; Singh 2013).]
[Highly fractured olivine showing strain shadow adjacent to Cr-spinel grains in dunite between crossed polars. The fractures are filled with serpentine (384/79-1).]
[Spinel harzburgite consisting of serpentinised olivine, non-pleochroic orthopyroxene and partially resorbed Cr-spinel with inclusions of serpentine (M77/20-2)]
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