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Implications of new data on Mesozoic rocks of Kachchh, western India

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Abstract

A lack of detailed facies studies has resulted in a false impression of the Mesozoic depositional setting in Kachchh, western India (previously, Kachchh has been termed ‘Kutch’ or ‘Cutch’). In addition, designation of part of this sequence as Gondawana implies, by tradition, a predominantly non-marine origin. Recently, we examined these Jurassic–Cretaceous units and found numerous wave-built sedimentary structures that have been previously overlooked or unreported, abundant marine trace fossils, and highly bioturbated and glauconite-rich beds. Thus, we now propose a marine origin for the entire Kachchh succession. This interpretation has important implications regarding similar sequences around the Indian plate margin.

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Authors and Affiliations

  1. Department of Geology, Banaras Hindu University, Varanasi, 221005, India

    Jai Krishna

  2. Department of Geology, Lucknow University, Lucknow, 226007, India

    Indra Bir Singh

  3. Skidaway Institute of Oceanography, Savannah, Georgia, 31406, USA

    James D. Howard

  4. Birbal Sahni Institute of Paleobotany, Lucknow, 226007, India

    Syed Abbas Jafar

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  1. Jai Krishna
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  2. Indra Bir Singh
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  3. James D. Howard
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  4. Syed Abbas Jafar
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Krishna, J., Singh, I., Howard, J. et al. Implications of new data on Mesozoic rocks of Kachchh, western India. Nature 305, 790–792 (1983). https://doi.org/10.1038/305790a0

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