CONTENTS. 



23 



Chapter X. — The Relations of Metamoephism to Stratigraphy — Continued. Page 



Relations of igneous rocks to stratigraphy 922 



Relations of rock flowage to mountain making . _ 924 



Chapter XI. — Relations of Metamorphism to the Distribution of the Chemical Elements. 932 



Composition of the lithosphere 932 



Table of analyses of igneous and crystalline rocks 934 



Table giving symbols, atomic weights, and proportions of the twenty-three most 



abundant elements in the outer 10 miles of the earth 936 



Table showing the amounts of the eleven most common oxides of the lithosphere, as 



estimated in 1891 and 1900 937 



Composite analyses of sedimentary rocks 938 



Constituents of meteorites 945 



Redistribution of the chemical elements 947 



Oxygen 948 



Sulphur 957 



Silicon 959 



Carbon 962 



Amount of carbon 962 



Segregation of carbon 964 



Segregation by carbonation 964 



Segregation in carbonaceous deposits 966 



Sources of segregated carbon 967 



Titanium . _ 974 



Phosphorus 975 



Chlorine , 97S 



Nitrogen 980 



Hydrogen 981 



Aluminum 983 



Iron 986 



Manganese 989 



Calcium 990 



Magnesium 992 



Sodium 996 



Potassium 999 



Barium, strontium, chromium, nickel, lithium, fluorine, bromine 1002 



General statements 1002 



Chapter XII. — The Relations of Metamorphism to Ore Deposits 1004 



Part I. General principles 1004 



Introductory _ 1004 



Classification of ore deposits 1005 



Deformation of the lithosphere 1005 



Zone of fracture, or zone of katamorphism 1005 



Openings of zone of fracture 1006 



Form and continuity of openings 1007 



Size of openings _ 1008 



Volume of openings 100S 



