alexa First Record Of Trace Fossils From The Pokaran Sandstone Of Marwar Supergroup, Pokaran Area, District - Jaisalmer, Western Rajasthan, India | 2507
ISSN: 2157-7617

Journal of Earth Science & Climatic Change
Open Access

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First record of trace fossils from the Pokaran sandstone of marwar supergroup, Pokaran area, district - Jaisalmer, Western Rajasthan, India

International Conference on Earth Science & Climate Change

V.S. Parihar and V. Gaur

Accepted Abstracts: J Earth Sci Climate Change

DOI: 10.4172/2157-7617.S1.007

Abstract
Well preserved Thalassinoides isp., Ophiomorpha isp., Planolites isp., and Psilonichnus isp., trace fossils are reported from Pokaran Sandstone of the Jodhpur group, the lower succession of the Marwar Supergroup. Marwar Supergroup is 1000m thick lithostratigraphic unit occupies a large area in north western Rajasthan that is unconformably overlies on 779-681 Ma old Malani igneous suites. It is sub-divided in three group?s viz., lower Jodhpur Group; middle Bilara Group and upper Nagaur Group, where as Jodhpur and Nagaur Group have argilla -aranaceous sequences and Bilara Group has calcareous sequence. Pokaran Sandstone is unconformably overlies on Pokaran boulder bed which is basal lithofacies of Late Neoproterozoic - Early Cambrian Marwar Suergroup. The Pokaran boulder bed occurs in three distinct forms viz., massive conglomerate, boulder spread and stratified conglomerate. These three forms of the boulder bed independently rest over the basement of Malani rhyolite. Whereas Pokaran Sandstone is subdivided in two lithofacies red to maroon shaly sandstone and light brown to reddish brown fine to medium grained sandstone. These trace fossils are preserved in light brown to reddish brown fine to medium grained sandstone in Pokaran area which is 180 km northwest of Jodhpur. They are identified as Thalassinoides suevicus isp., Ophiomorpha isp., (produced by decapod crustaceans) Planolites isp., (produced by worm like aminals) and Psilonichnus isp., (produced by arthopods). All these ichnogenera (Thalassinoides isp., Ophiomorpha isp. and Planolites isp.,) show shallow marine depositional environment and Psilonichnus isp., shows marsh environment. No age can be assigned on the basis of these trace fossils as they range from Cambrian to Recent.
Biography
Manu Rastogi, is a third year student of University of Petroleum & Energy Studies, Dehradun, India pursuing Bachelor of Technology in Geo Sciences. He has worked as a GIS intern in company ?Map My India?, New Delhi for six weeks. He has a sound academic record. His areas of interest are Geologic Surveying, Structural Geology and Sedimentology. He has been seeking a challenging career in the Oil & Gas sector, where his technical knowledge and managerial skills can be utilized effectively for the mutual benefit of the organisation, as well as his professional career.
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