Geology of india and burma pdf

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geology of india and burma pdf

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Geological Time Scale with reference to India - 4 Eras & 10 Periods Explained

Journal of the Indian Society of Remote Sensing. Various lithounits such as khondalites, charnockites and granites of Archaean age were mapped.

Structure, Tectonics, and Geological History of the Northeastern Indian Ocean

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.


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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 They were out of print by IglO or thereabouts. Students of geology were, however, fortu- nate in the publication, by Mr. Wadia, of his excellent book 'Geology of India' in I gIg, and the subsequent editions. For about a quarter of a century it has been the only book available on the subject. A new book on Indian Stratigraphy needs therefore no apology to make its appearance, especially at a time when the subject is attracting the attention of an increas- ing number of students and the educated public alike.

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.

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