Neoproterozoic substrate condition vis-à-vis microbial mat structure and its implications : Sonia Sandstone, Rajasthan, India

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dc.contributor.author Samanta, P.
dc.contributor.author Mukhopadhyay, S.
dc.contributor.author Sarkar, Subir
dc.contributor.author Eriksson, Patrick George
dc.date.accessioned 2016-01-15T06:48:56Z
dc.date.issued 2015-07
dc.description.abstract The present study deals with the Neoproterozoic mat-infested substrate sculptured by inferred bioturbations, excellently preserved within the ca. 600 Ma Sonia Sandstone, northwest India. The bioturbations are horizontal, being preserved on the bed-surfaces and have been classified into linear grooves and discoidal structures. The linear grooves are of two types, one group represents a straight to meandering pattern with raised sand ridges on either side, while the other group represents a mostly meandering pattern with changing width along the length, without raised ridges. Both types of grooves resemble trails of advanced organisms. The discoidal structures have five internal lobes emerging from the centre and merging with the outer ring and may represent body impressions of an organism; alternatively may represent variants of Ediacara or other soft bodied organisms. The interaction of the substrate with these possible bioturbators has great significance in establishing the evolutionary history of the substrate and resulting bioturbations during the Proterozoic. Microbial mats possibly provided oxygen and nutrients to the organisms and played an important role in their preservation. The study also tries to extrapolate the life style of these trace-makers. All these traces may raise speculation about the onset-time of some higher order organisms. en_ZA
dc.description.embargo 2016-07-31
dc.description.librarian hb2015 en_ZA
dc.description.sponsorship DST Fast track project (Young Scientist Scheme, No: SR/FTP/ES-03/2011).CAS (Phase V), UPE-II programme of Jadavpur University. National Research Foundation and University of Pretoria, South Africa. en_ZA
dc.description.uri http://www.elsevier.com/locate/jseaes en_ZA
dc.identifier.citation Samanta, P, Mukhopadhyay, S, Sarkar, S & Eriksson, PG 2015, 'Neoproterozoic substrate condition vis-à-vis microbial mat structure and its implications : Sonia Sandstone, Rajasthan, India', Journal of Asian Earth Sciences, vol. 106, pp. 186-196. en_ZA
dc.identifier.issn 1367-9120 (print)
dc.identifier.issn 1878-5786 (online)
dc.identifier.other 10.1016/j.jseaes.2015.03.013
dc.identifier.uri http://hdl.handle.net/2263/51198
dc.language.iso en en_ZA
dc.publisher Elsevier en_ZA
dc.rights © 2015 Elsevier Ltd. All rights reserved. Notice : this is the author’s version of a work that was accepted for publication in Journal of Asian Earth Sciences. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Journal of Asian Earth Sciences, vol. 106, pp. 186-196, 2015. doi : 10.1016/j.jseaes.2015.03.013. en_ZA
dc.subject Sonia Sandstone en_ZA
dc.subject Bioturbations en_ZA
dc.subject Microbial mat en_ZA
dc.subject Medusoid structure en_ZA
dc.subject Life style en_ZA
dc.title Neoproterozoic substrate condition vis-à-vis microbial mat structure and its implications : Sonia Sandstone, Rajasthan, India en_ZA
dc.type Postprint Article en_ZA


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