Magmatic Processes: Review of Some Concepts and Models

  • Santosh KumarEmail author
Part of the Society of Earth Scientists Series book series (SESS)


Magmas are commonly high-temperature, high-entropy silicate solutions of wide compositional range, and may crystallize to form a variety of igneous rocks viz. ultramafic, mafic, felsic to intermediate igneous rock types. Most igneous rocks in space and time may or may not be part of a co-magmatic suite but may have evolved by a number of major and subsidiary magmatic processes operating from source to sink regions. Two essentially important major processes reviewed and discussed herein, fractional differentiation and mixing of magmas, which may operate either separately or concurrently and are commonly responsible for the textural and chemical evolution of most igneous rocks. The methods and validity of qualitative and quantitative geochemical models of these processes are also described and evaluated in the light of field and textural observations.


Igneous Rock Magma Chamber Fractional Crystallization Mafic Magma Magmatic Process 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.



I extend sincere thanks to R. N. Singh, Senior INSA Scientist, CSIR-NGRI, Hyderabad, who helped me to understand the numerical basis of magmatic processes. Fruitful discussion with Igor Petrík, Vojtech Vilinovič, Igor Broska, H. R. Naslund, Ewa Słaby has enhanced knowledge of modelling the magma chamber processes. Sita Bora and Hansa Joshi are thanked for assisting me while finalizing this chapter. Science and Engineering Research Board (SERB), New Delhi is highly acknowledged for financial support. David R. Nelson is especially thanked for fruitful and generous comments that highly improved the earlier version. Permissions from Elsevier and Veda Publishing House for using some materials in this chapter are gratefully acknowledged.


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© Springer International Publishing Switzerland 2014

Authors and Affiliations

  1. 1.Department of Geology, Centre of Advanced StudyKumaun UniversityNainitalIndia

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