Field Geology

, and Arrangement of Fossils-Value of Pal ontolngicnl Evidence-Evidence of Physical Conditions - - 144 CHAPTER IV. Characteristic Fossils-Table of Fossils - - - 157 CHAPTER I. Survey of Older Rocks-Boundaries and Faults-Downthrow-Vertical Section-Eruptive Rocks-Veins 202. CHAPTER 11. Geological Generaliaatioil and Practical Results-Watersupply-Soils - c. 214 ILLUSTRATIONS. Figure 1. Compass and Clinometer ,, 2. Protractor, zqq el si cle - , 3. Hammer, Pick, and Spud, combined ,, 4. Protractor, tiiztler side, as Scale - ,, 5. Area Surveyed, First Slip 7 6. ,, ,, Second Slip - 7, 7-,, 9 7 Third Slip - 7, 8. ,, 7 , Fourth Slip - ,, . 9. 3lethods of Traversing - ,, 10. Clinometer - . l 12 1 . Diagrams for finding Direction of Dip - - 44 ,, 14. Example of finding Direction of Dip, by Diagram - - - 45 Diagrams for finding Amount of Dip l ,, 17. Diagram for fi iding Amount of Dip and its Direction - - 48 ,, 18. Inaccessible Cliff, to find the height of - - 80 ,, 19. Horizontal Section - - - 83 ,, 20. Diagram for finding Apparent Dip - - 85 ,, 20u. Cast and Impression - - - - 132 ,, 21. Area urve ed- lrco Io oieeP s - 204 ,, 22. Section across Fig. 22 - - 210 ,, 23. Vertical Section - - - - 212