EAN: 9783030030285

THE NATURE AND MODELS OF METAMORPHISM - VLADIMI...

This book presents the genetic connections of metamorphism and geodynamics. It discusses the
tectonic and magmatic processes as the reason of metamorphism  and the geological types of
metamorphism  which define the features of ¿-¿ parameters and ¿-¿-t paths. Three categories of
metamorphism are distinguished depending on the heat flow rate: 1) at a geothermal gradient
near to an average terrestrial (normal) value  2) at a heightened thermal gradient as the
result of additional heat supply in the earth's crust by magmatic intrusions and diapirism of
magma  3) at a reduced thermal gradient during the collision of lithosphere plates and blocks
of the earth's crust. The quantitative methods of description of metamorphism have been widely
used in this book. The mathematical models of metamorphism have been studied in connection with
magmatic intrusions  rifting process and magmatic diapirism. Mineral changes in the rocks
controlled by variations of ¿-¿ of parameters  mass transfer and chemical reactions have also
been characterized. The book proposes a quasi-stationary model of diffusion metasomatism with
respect to the formation of zonal structures of minerals. The method of mineral thermobarometry
for the conditions of unsteady equilibrium has been worked out  the quantitative analysis of
mass transfer during metamorphic reactions in the rock matrix has been carried out  and the
mobility of chemical elements at metamorphism has been estimated as well. The book is intended
for specialists in the fields of petrology  mineralogy and geochemistry  and for students at
the senior and graduate level.

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