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Factors influencing Detrital Mineralogy and Tectono-provenance of Fort Member Sandstone, Jaisalmer Formation, Western Rajasthan, India

Factors influencing Detrital Mineralogy and Tectono-provenance of Fort Member Sandstone,... Detrital mineralogy of the sandstone of Fort Member of Jurassic Jaisalmer basin has been investigated with respect to provenance, the influence of palaeoclimate, distance of transport and effects of diagenesis on the detrital mineralogy. Petrographic studies based on quantitative analysis of the detrital minerals revealed that the sandstones are composed mostly of quartz, feldspar, mica, chert, rock fragments and heavy minerals. The detrital modes of the studied Fort Member sandstone, which are indicative of mature stable cratonic blocks and recycled orogen provenance, where sediments are likely to be derived from collision orogen under semi-humid to humid climatic conditions. Petrographic data coupled with the palaeocurrent analysis results indicate a mixed provenance including granites, granite-gneisses, low and high-grade metamorphic rocks of the Aravalli craton. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of the Geological Society of India Springer Journals

Factors influencing Detrital Mineralogy and Tectono-provenance of Fort Member Sandstone, Jaisalmer Formation, Western Rajasthan, India

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References (53)

Publisher
Springer Journals
Copyright
Copyright © 2019 by Geological Society of India
Subject
Earth Sciences; Geology; Hydrogeology
ISSN
0016-7622
eISSN
0974-6889
DOI
10.1007/s12594-019-1193-x
Publisher site
See Article on Publisher Site

Abstract

Detrital mineralogy of the sandstone of Fort Member of Jurassic Jaisalmer basin has been investigated with respect to provenance, the influence of palaeoclimate, distance of transport and effects of diagenesis on the detrital mineralogy. Petrographic studies based on quantitative analysis of the detrital minerals revealed that the sandstones are composed mostly of quartz, feldspar, mica, chert, rock fragments and heavy minerals. The detrital modes of the studied Fort Member sandstone, which are indicative of mature stable cratonic blocks and recycled orogen provenance, where sediments are likely to be derived from collision orogen under semi-humid to humid climatic conditions. Petrographic data coupled with the palaeocurrent analysis results indicate a mixed provenance including granites, granite-gneisses, low and high-grade metamorphic rocks of the Aravalli craton.

Journal

Journal of the Geological Society of IndiaSpringer Journals

Published: Apr 11, 2019

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