20 



CONTENTS. 



Chapter VIII. — The Zone of Anamorphism — Continued. 

 Work in zone of anamorphism — Continued. 



Igneous work 



Injection - 



Manner of intrusion 



Resultant metamorphism 



Factors controlling metamorphism 



Size of intrusive masses 



The temperature 



Amount of water present - 



Composition of intrusive and intruded rocks _ 



Metamorphic effects 



Structures , 



The minerals - - 



Pegmatites - - 



Fusion and absorption 



Combinations and relations of the various processes 



Relations of granulation and recrystallization 



Character of material 



Temperature 



Pressure and rapidity of deformation 



Water content - - 



Rock flowage - - 



Meaning of rock flowage 



Conclusion ■- 



Meaning of rock cleavage - 



Effect of rock flow on textures and structures 



Rock flowage and mashing - - 



Changes in chemical composition - - 



Relations of zone of anamorphism to zone of katamorphism 



Comparative energy required for deformation in zones of katamorphism and ana- 

 morphism 



Conclusion - 



Chapter IX. — Rocks 



Use of some general terms applied to metamorphic rocks - - 



Meta '- 



Apo - 



Slate and schist - » 



Slate 



Schist 



Gneiss - - - - 



General statements 



Sedimentary rocks - ■• 



Nonfragmental class 



Nitrate order - - 



Niter family - 



707 

 707 

 708 

 711 

 711 

 711 

 712 

 712 

 713 

 716 

 716 

 717 

 720 

 728 

 36 



738 

 740 

 741 

 741 

 748 

 748 

 759 

 760 

 760 

 762 

 764 

 766 



769 

 74 



776 



76 

 76 



