THE ECONOMIC ASPECTS OF GEOLOGY





C. K. LEITH


UNIVERSITY OF WISCONSIN





deco





NEW YORK
HENRY HOLT AND COMPANY





Copyright, 1921
BY
HENRY HOLT AND COMPANY
August, 1923
PRINTED IN THE U. S. A.






[Pg iii]


CONTENTS

CHAPTER  PAGE
I.INTRODUCTION1
 Survey of Field1
 Economic applications of the several branches of geology and of other sciences3
  Stratigraphy and paleontology4
  Structural geology5
  Physiography6
  Rock alterations or metamorphism10
  Application of other sciences10
 Treatment of the subject in this volume11
II.THE COMMON ELEMENTS, MINERALS, AND ROCKS OF THE EARTH AND THEIR ORIGINS13
 Relative abundance of the principal elements of the lithosphere13
 Relative abundance of the principal minerals of the lithosphere14
 Relative abundance of the principal rocks of the lithosphere16
 ...

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