Overview on the Middle to Upper Jurassic Sedimentary Succession of Gangta Bet in the Kachchh Basin, Western India, with Special Emphasis on its Lithostratigraphy, Biostratigraphy, and Palaeoenvironment

Authors

  • Matthias Alberti
     Institut für Geowissenschaften, Christian-Albrechts-Universität zu Kiel, Ludewig-Meyn-StraíŸe 10, 24118 Kiel
  • Franz T. Fürsich
     GeoZentrum Nordbayern, Fachgruppe PaläoUmwelt, Friedrich-Alexander-Universität Erlangen-Nürnberg, LoewenichstraíŸe 28, 91054 Erlangen
  • Dhirendra K. Pandey
     Department of Geology, University of Rajasthan, Jaipur - 302 004
  • Debahuti Mukherjee
     Geological Survey of India, Kolkata - 700 016

DOI:

https://doi.org/10.1007/s12594-017-0598-7

Abstract

The Jurassic succession of Gangta Bet in the Kachchh basin of western India comprises around 130 m of mostly siliciclastic rocks. The strata belong to the Gangta Member of the Gadhada Formation and are herein sub-divided into four units: the Gangta sandstone beds, the lower silty sandstone beds, the upper silty sandstone beds, and the Gangta ammonite beds. These units can be separated by three marker horizons: the Brachiopod bed, the Gangta Conglomerate Bed, and the Gervillella Bed. Ammonites indicate an Oxfordian age for the upper half of the succession, but the scarcity of identifiable fossils in its basal part so far prevented precise biostratigraphic assignments. The shallow-water sediments can be interpreted as parasequences as a result of minor sea-level changes. Deposition took place close to the palaeo-coastline at water depths around the fair-weather wave-base.

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Issue

Volume 89, Issue 3, March 2017 Pages (229-356)

Section

Research Articles

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Published

2017-03-01

How to Cite

Alberti, M., Fürsich, F. T., Pandey, D. K., & Mukherjee, D. (2017). Overview on the Middle to Upper Jurassic Sedimentary Succession of Gangta Bet in the Kachchh Basin, Western India, with Special Emphasis on its Lithostratigraphy, Biostratigraphy, and Palaeoenvironment. Journal of Geological Society of India, 89(3), 259–270. https://doi.org/10.1007/s12594-017-0598-7
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