The Nature and Models of Metamorphism

The Nature and Models of Metamorphism

Hardcover(1st ed. 2019)

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Overview

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 Р-Т parameters and Р-Т-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 Р-Т 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.

Product Details

ISBN-13: 9783030030285
Publisher: Springer International Publishing
Publication date: 12/31/2018
Series: Springer Geology
Edition description: 1st ed. 2019
Pages: 330
Product dimensions: 6.10(w) x 9.25(h) x (d)

Table of Contents

CONTENTS

Introduction

1. The development of ideas about the mineral transformations and the facies of

metamorphism

1. The facies of metamorphism

2. The kinetics of metamorphism

2. Mineral geothermobarometry

3. The causes, geodynamic factors and models of metamorphism

3.1. Types of metamorphism

3.2. Models of metamorphism

3.2.1. Metamorphism caused by additional heat supply

3.2.1.1. Contact metamorphism

3.2.1.2. Zoning metamorphism of moderate pressure

3.2.1.3. Metamorphism associated with magmatic diapirism

3.2.2. Metamorphism at a geothermal gradient near to an average terrestrial value

3.2.2.1. Metamorphism caused by subsidence of the earth’s crust in the basins

during continental rifting

3.2.2.2. Metamorphism caused by tectonic overcrowding in orogens

3.2.2.3. Metamorphism at the formation of Archaean crust

3.2.3. Collision metamorphism

3.2.3.1. Metamorphism associated with thrusts

3.2.3.2. Metamorphism caused by subduction and underthrusts

4. Metamorphic processes in the rocks

4.1. P-T-t paths as the result of metamorphism evolution

4.2. Mass transfer during metamorphism

4.2.1. Coronites and the model of origin of zonal mineral structures

4.2.1.1. The Korzhinsky – Fisher – Joesten model

4.2.1.2. Mineralogical thermometry with the use of zonal structures

4.2.2. Metamorphic reactions in the matrix

4.2.2.1. The model of dissolution and growth of scattered mineral grains

4.2.2.2. Intergranular mass transfer in the matrix and

metamorphic reactions

4.2.3. Estimates of the metamorphic reaction rates

Conclusion

Appendix

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