ABSTRACT he volcano-plutonic rocks of the Siner area of the Malani Igneous Suite (MIS) are characterized by high content of radioactive elements (U, Th, K) and are classified as high heat producing felsic volcano-plutonic rocks of A-type granitoid. Microgranite shows highly comparable heat production (26.07 HP) and total heat generation value (62.06 HGU in average) as compared to other granite (HP = 12.73; HGU = 26.57), rhyolite (HP = 4.98; HGU = 11.85) and trachyte (HP = 5.00; HGU = 11.91). The volcano-plutonic rocks of the present show higher average value of total HGU than the average value of 3.8 HGU for the continental crust, which suggests a possible linear relationship among the crustal heat generation of the MIS.
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L. Singh and G. Vallinayagam, "High Heat Producing Volcano-Plutonic Rocks of the Siner Area, Malani Igneous Suite, Western Rajasthan, India," International Journal of Geosciences, Vol. 3 No. 5, 2012, pp. 1137-1141. doi: 10.4236/ijg.2012.35115.
 F. Birch, “Heat from Radioactivity,” John Wiley, New York, 1954, pp. 148-174.
 J. J. W. Rogers and J. A. S. Adams, “Thorium,” In: K. H. Wedepohl, Ed., Handbook of Geochemistry, SpringerVerlag, Berlin, 1969, pp. 11-14.
 L. Rybach, D. Werner, S. Mueller and G. Berset, “Heat flow, heat production and crustal dynamics in the Central Alps, Switzerland,” Tectonophysics, Vol. 41, No. 1-3, 1977, pp. 113-126.
 M. Pagel, “The Mineralogy and Geochemistry of Uranium, Thorium and Rare Earth Elements in Two Radioactive Granites of the Vosges, France,” Mineralogical Magazine, Vol. 46, No. 339, 1982, pp. 149-161.
 J. A. Plant, C. O’Brein, J. Tarney and J. Hurdlet, “Geochemical Criteria for Recognition of High Heat Producing Granites,” In: High heat production granites, hydrothermal alteration and ore genesis, Institute of Mineralogy and Meteorites, London, 1985, pp. 263-283.
 L. D. Ashwal, P. Morgan, S. A. Kelly and G. A. Preicival, “Heat Production in an Archean Crustal Profile and Implications for Heat Flow and Mobilization of Heat Producing Elements,” Earth and Planetary Science Letters, Vol. 85, No. 4, 1987, pp. 439-450.
 N. Kochhar, “High Heat Production Granites of the Malani Igneous Suite, N. W Peninsular India,” Industrial Minerals, Vol. 43, 1989, pp. 339-346.
 N. Kochhar, “Mineralization Associated with A-Type Malanimagmatism, Northwestern Peninsular India,” In: S. C. Sarkar, Ed., Metallogeny Related to Tectonic of the Proterozoic Mobile Belts, Oxford-IBH, New Delhi, 1992, pp. 209-224.
 R. Sharma, “High Heat Production (HHP) Granites of Jhunjhunu Area, Rajasthan, India,” Bulletin of Indian Geologists Association, Vol. 27, 1994, pp. 55-61.
 A. K. Singh and G. Vallinayagam, “Radioactive Element Distribution and Rare-Metal Mineralization in Anorogenic Acid Volcano-Plutonic Rocks of the Neoproterozoic Malani Felsic Province, Western Peninsular India,” Journal of the Geological Society of India, Vol. 73, 2009, pp. 837-853.
 G. Vallinayagam and L. G. Singh, “Radioactive Heat Producing Felsic to Intermediate Volcano—Plutonic Rocks of Dhiran Area, Malani Igneous Suite, Western India,” Indian Journal of Earth Sciences, Vol. 4, No. 2, 2011, pp. 68-97.
 H. S. Pareek, “Petrochemistry and Petrogenesis of the Malani Igneous Suite, India,” Geological Society of America Bulletin, Vol. 92, 1981, pp. 206-273.
 N. Kochhar, “Malani Igneous Suite: Hot-Spot Magmatism and Cratonization of the Northern Part of the Indian Shield,” Journal of the Geological Society of India, Vol. 25, 1984, pp. 155-161.
 S. K. Bhushan and V. Chandrasekaran, “Geology and Geochemistry of the Magmatic Rocks of the Malani Igneous Suite and Tertiary Alkaline Province of Western Rajasthan,” Memoirs of the Geological Survey of India, Vol. 126, 2002, pp. 1-129.
 G. Vallinayagam, “Peralkaline—Peraluminous A—Type Rhyolites, Siwana Ring Complex, Northwestern India: Petrogeneticmodelling and Tectonic Implications,” Journal of the Geological Society of India, Vol. 64, 2004, pp. 336-344.
 A. K. Singh, R. K. B. Singh and G. Vallinayagam, “Anorogenic Acid Volcanic Rocks in the Kundal Area of the Malani Igneous Suite. Northwestern India: Geochemical and Petrogenetic Studies,” Journal of Asian Earth Sciences, Vol. 27, No. 4, 2006, pp. 544-557.
 N. K. Saini, P. K. Mukherjee, M. S. Rathi, P. P. Khanna and K. K. Purohit, “A New Geochemical Reference Sample of Granite (DH-G) from Dalhousie Himachal Himalaya,” Journal of the Geological Society of India, Vol. 52, No. 11, 1998, pp. 603-606.
 P. Roy, V. Balaram, A. Kumar, M. Satyanarayanan and T. Gnaeshwar Rao, “New REE and Trace Element Data on Two Kimberlite Reference Materials by ICP-MS,” Geostandards and Geoanalytical Research, Vol. 31, No. 3, 2007, pp. 261-273.
 G. Vallinayagam and N. Kochhar, “Geochemical Characterization and Petrogenesis of A-Type, Granites and the Associated Acid Volcanics of the Siwana Ring Complex, Northern Peninsular, India,” In: B. S. Paliwal, Ed., The Indian Precambrian, Scientific Publishers, Jodhpur, 1998, pp. 460-481.
 S. R. Taylor and S. M. McLennan, The Continental Crust: Its Composition and Evolution, Black-well Scientific publications, Oxford, 1985.
 R. Dhana Raju, J. P. Singh and T. K. Bhattacharya, “A Preliminary Study on Radioactive Heat Generation of Some Precambrian Granitic Rocks of India,” Indian Journal of Earth Sciences, Vol. 10, No. 2, 1983, pp. 112119.
 P. Hollings, P. Fralick and S. Kissin, “Geochemistry and Geodynamic Implications of Mesoproterozoic English Bay Granite-Rhyolite Complex, Northwestern Ontario,” Canadian Journal of Earth Sciences, Vol. 41, No. 11, 2004, pp. 1329-1338. doi:10.1139/e04-077
 J. F. Menuge, T. S. Brewer and C. M. Seeger, “Petrogenesis of Metaluminous A-Type Rhyolite from the St. Francois Mountains, Missouri and Mesoproterozoic Evolution of the Southern Laurentian Margin,” Precambrian Research, Vol. 113, No. 3, 2002, pp. 269-291.
 J. A. Kinnard, R. A. Batchelor, J. E. Whittely and A. B. Mackenzie, “Geochemistry, Mineralization and Hydrothermal Alteration of the Nigerian High Heat Producing,” In: High heat production (HHP) granites, hydrothermal alteration and oregenesis, Institute of Mining and Metallurgy, London, 1985, pp. 169-199.