Journal of the Indian Society of Remote Sensing. Various lithounits such as khondalites, charnockites and granites of Archaean age were mapped. Different landforms under each geomorphic unit are also mapped. Unable to display preview. Download preview PDF. Skip to main content.
Krishnan was born on 24 August in Tanjore , Madras Presidency. After school education in Tanjore, he continued his studies in St. Joseph's College, Trichinapoly. He graduated with B. For two years after receiving his honours degree, Dr. He was appointed as Assistant Superintendent Geologist in the superior service in the Geological Survey of India and joined the department in December  where Dr. Krishnan worked alongside Lewis Fermor, C.
The Ocean Basins and Margins pp Cite as. Bathymetry and topography of the study area are shown in Fig. Combined, it is one structural province, extending from the Assam Valley on the northeast and the Ganges flood plain on the northwest, southward over oceanic crust to the distal ends of the Bengal and Nicobar Fans. This Mesozoic-Cenozoic structural basin will henceforth be referred to as the Bengal Geosyncline. Unable to display preview. Download preview PDF. Skip to main content.
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The first edition of the official Manual of the Geology of India by Medlicott and Blanford appeared in and a second edition by R. Oldham was published in
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June , Cite as. The ophiolitic rocks of Naga Hills-Andaman belt occur as rootless slices, gently dipping over the Paleogene flyschoid sediments, the presence of blue-schists in ophiolite melange indicates an involvement of the subduction process. Subduction was initiated prior to mid-Eocene as proved by the contemporaneous lower age limit of ophiolite-derived cover sediment as against the accreted ophiolites and olistostromal trench sediment. During the late Oligocene terminal collision between the Indian and Sino-Burmese blocks, basement slivers from the Sino-Burmese block, accreted ophiolites and trench sediments from the subduction zone were thrust westward as nappe and emplaced over the down-going Indian plate. The geometry of the ophiolites and the presence of a narrow negative gravity anomaly flanking their map extent, run counter to the conventional view that the Naga-Andaman belt marks the location of the suture. The root-zone of the ophiolite nappe representing the suture is marked by a partially-exposed eastern ophiolite belt of the same age and gravity-high zone, passing through central Burma-Sumatra-Java. The ophiolites of the Andaman and Naga Hills are also conventionally linked with the subduction activity, west of Andaman islands.