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Sequence stratigraphic study of lesser Himalayan succession in parts of Mussoorie Syncline, Dun Valley, Uttrakhand, India

Author Affiliations

  • 1Department of Applied Geology, Dibrugarh University, Dibrugarh -786004, Assam, India
  • 2Department of Earth Science, Assam University Silchar, Silchar - 788011, Assam. India
  • 3Department of Earth Science, Assam University Silchar, Silchar - 788011, Assam. India

Int. Res. J. Earth Sci., Volume 8, Issue (1), Pages 1-7, February,25 (2020)

Abstract

The Neoproterozoic - lower Cambrian terrigenous and carbonate rocks of the Lesser Himalayan successions were studied in parts of Mussoorie syncline, Dun valley, Uttrakhand employing standard concepts and methods of Sequence Stratigraphy. The succession rests unconformably over the folded Jaunsar Group of Mesoproterozoic age. The Blaini - Krol succession is overlain by the Tal Group of rocks belonging to Cambrian age. Early Permian and Late Cretaceous / Early Eocene successions unconformably overlie the Tal Group. Two sequence boundaries - the one at the base of the postglacial cap carbonate, i.e. Blaini Formation and the other a regional flooding surface within the Tal Formation close to the Krol - Tal contact have been identified on the basis of abrupt lithofacies changes. A complex of glaciomarine - tidal environment has been envisaged for the development of lesser Himalayan succession.

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