Microbially induced sedimentary structures (MISS) from the Ediacaran Jodhpur Sandstone,Marwar Supergroup,western Rajasthan |
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| Institution: | 1. A.A. Trofimuk Institute of Petroleum Geology and Geophysics, Siberian Branch of the Russian Academy of Sciences, pr. Akademika Koptyuga 3, Novosibirsk, 630090, Russia;2. Novosibirsk State University, ul. Pirogova 2, Novosibirsk, 630090, Russia;1. A.A. Trofimuk Institute of Petroleum Geology and Geophysics, Siberian Branch of the Russian Academy of Sciences, pr. Akademika Koptyuga 3, Novosibirsk, 630090, Russia;2. Institute of Diamond and Precious Metal Geology, Siberian Branch, Russian Academy of Sciences, pr. Lenina 39, Yakutsk, 677891, Russia;3. Novosibirsk State University, ul. Pirogova 2, Novosibirsk, 630090, Russia;1. A.A. Trofimuk Institute of Petroleum Geology and Geophysics, Siberian Branch of the Russian Academy of Sciences, pr. Akademika Koptyuga 3, Novosibirsk, 630090, Russia;2. Novosibirsk State University, ul. Pirogova 2, Novosibirsk, 630090, Russia;1. A.A. Trofimuk Institute of Petroleum Geology and Geophysics, Siberian Branch of the Russian Academy of Sciences, pr. Akademika Koptyuga 3, Novosibirsk, 630090, Russia;2. Novosibirsk State University, ul. Pirogova 2, Novosibirsk, 630090, Russia;3. Geological Institute, Russian Academy of Sciences, Pyzhevsky per. 7, Moscow, 119017, Russia;4. Institute of Precambrian Geology and Geochronology, Russian Academy of Sciences, nab. Makarova 2, St. Petersburg, 199034, Russia |
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| Abstract: | Fourteen microbially induced sedimentary structures (MISS) have been described from the middle part of the Jodhpur Sandstone. They have been subdivided under three headings; (A) those microbially induced structures which could be compared with the structures also produced by the inorganic processes, (B) those structures which have unique morphologies and could not have produced by inorganic processes alone and (C) those structures which could not acquire specific morphologies and can be referred to as ‘textured morphological surfaces’ in the sense of Gehling and Droser (2009). These forms are described and their stratigraphic significance discussed. There are some morphologies like Arumberia banksi, Rameshia rampurensis and Jodhpuria circularis which have been restricted to latest Neoproterozoic sediments. |
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| Keywords: | Microbial mats Jodhpur Sandstone Ediacaran Rajasthan MISS |
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