Geochemistry and Petrogenesis of Siwana Peralkaline Granites, West of Barmer, Rajasthan, India |
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| Authors: | Anil Maheshwari A.N. Sial Massimo Coltorti V.K. Chittora Manoel J.M. Cruz |
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| Affiliation: | 1. Beijing SHRIMP Centre, Institute of Geology, Chinese Academy of Geological Sciences, 26 Baiwanzhuang Road, 100037 Beijing, China;2. Department of Geosciences, University of Mainz, 55099 Mainz, Germany;3. Institute of Precambrian Geology and Geochronology, Russian Academy of Sciences, nab. Makarova 2, St. Petersburg, 199034 Russia;4. Vernadsky Institute of Geochemistry and Analytical Chemistry, Russian Academy of Sciences, ul. Kosygina 19, Moscow, 119991 Russia;5. Department of Earth Sciences, University of Hong Kong, Pokfulam Road, Hong Kong, China;1. Departamento de Geología Regional, Instituto de Geología, Universidad Nacional Autónoma de México, 04510 México, DF, Mexico;2. National Taiwan Normal University, Department of Earth Sciences, 88 Tingzhou Road Section 4, Taipei 11677, Taiwan;3. Department of Geology, St. Mary''s University, Halifax, Nova Scotia, Canada B3H 3C3;4. Department of Energy, Halifax, Nova Scotia B3J 3J9, Canada |
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| Abstract: | ![]()
The bimodal Malani suite, West of Barmer, Rajasthan is characterized by discontinuous, ring shaped outcrops of Siwana peralkaline granite with minor outcrops of basalt. The peralkaline, within- plate and A-type nature of granite are evident by its chemical characteristics. The granite is characterized by high Na2O+K2O, Fe/Mg, Zr, Nb, Y, Zn; low Al2O3, CaO and Sr and is significantly low in absolute abundance of trace and REE elements compared to type area Siwana granite. The granite is correlated to the “Pan-African” event and its petrogenesis and tectonic significance are discussed. |
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| Keywords: | Geochemistry bimodal suite Malani igneous suite Siwana granite petrogenesis |
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