Modelling of Magmatic and Allied Processes

1. Front Matter

   Pages i-xi

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2. Magmatic Processes: Review of Some Concepts and Models

   • Santosh Kumar

   Pages 1-22

3. Models for Quantifying Mantle Melting Processes

   • R. N. Singh, A. Manglik

   Pages 23-45

4. Geochemical Modelling of Melting and Cumulus Processes: A Theoretical Approach

   • K. Vijaya Kumar, K. Rathna

   Pages 47-73

5. Parameterized Mantle Convection Analysis for Crustal Processes

   • R. N. Singh, A. Manglik

   Pages 75-88

6. Modelling Paleogeotherms in the Continental Lithosphere: A Brief Review and Applications to Problems in the Indian Subcontinent

   • R. N. Singh, Jibamitra Ganguly

   Pages 89-108

7. Accessory Phases in the Genesis of Igneous Rocks

   • Igor Broska, Igor Petrík

   Pages 109-149

8. Self-Similar Pattern of Crystal Growth from Heterogeneous Magmas: 3D Depiction of LA-ICP-MS Data

   • Ewa Słaby, Michał Śmigielski, Andrzej Domonik, Luiza Galbarczyk-Gasiorowska

   Pages 151-165

9. Microanalytical Characterization and Application in Magmatic Rocks

   • Naresh C. Pant

   Pages 167-180

10. Hydrothermal Fluids of Magmatic Origin

    • Rajesh Sharma, Pankaj K. Srivastava

    Pages 181-208

11. Oxidized Granitic Magmas and Porphyry Copper Mineralization

    • Shunso Ishihara, Akira Imai

    Pages 209-223

12. Mass Balance Modelling of Magmatic Processes in GCDkit

    • Vojtěch Janoušek, Jean-François Moyen

    Pages 225-238

13. Back Matter

    Pages 239-240

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Modeling of Magmatic and Allied Processes presents methods and models for the quantification of geological processes. Conceptual models for magmatic differentiation involving crystallization and mixing are presented and applied to field and textural data. Model equations for the degree of partial melting in presence perturbations of lithospheric geotherms and partitioning of trace/radioactive elements in the matrix and melts, and the formation of continents with melt additions are described.  Diverse magmatic products are shown to result from differentiation processes rather than magmatic source heterogeneities. The degree of partial melting depends on mantle temperatures, for which parameterized thermal convection models are reviewed. Perturbations in geotherms caused by mantle heat flow, CO2 flux from great depths and tectonic thrusting are analyzed. The petrogenetic significance of accessory minerals of felsic magma evolution is assessed with the help of examples from Carpathian granitoids. Methods for simulating the 3-D Concentration and Distribution Models (DC-DMs) and fractal dimension of evolving magma systems are described with examples. The use of conventional scanning electron microscopy methods and electron microprobe to characterize and infer magmatic processes is explained, and the background and economic potential of hydrothermal systems are examined. The nature of oxidizing felsic magmas along with their potential for copper mineralization is discussed. In closing, the handling, calculation and plotting of geochemical data for igneous rock suites using the R-language-based software Geochemical Data Toolkit (GCDkit) along with plug-in modules for the forward and reverse mass-balance calculation of fractional crystallization are demonstrated.

• Hydrothermal Fluids
• Igneous Petrology
• Magmatic Processes
• Mineral Deposits
• Quantitative Modelling
• quantitative geology
• structural geology

• Department of Geology, Centre of Advanced Study, Kumaun University, Nainital, India

  Santosh Kumar

• CSIR-National Geophysical Research Institute, Hyderabad, India

  Rishi Narain Singh

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